CN108863270B - High-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry and composite heat-preservation layer - Google Patents
High-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry and composite heat-preservation layer Download PDFInfo
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- CN108863270B CN108863270B CN201810858992.XA CN201810858992A CN108863270B CN 108863270 B CN108863270 B CN 108863270B CN 201810858992 A CN201810858992 A CN 201810858992A CN 108863270 B CN108863270 B CN 108863270B
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- 239000010440 gypsum Substances 0.000 title claims abstract description 229
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 229
- 238000009413 insulation Methods 0.000 title claims abstract description 97
- 239000002002 slurry Substances 0.000 title claims abstract description 74
- 238000005488 sandblasting Methods 0.000 title claims abstract description 69
- 238000004321 preservation Methods 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 75
- 238000005507 spraying Methods 0.000 claims abstract description 56
- 238000010276 construction Methods 0.000 claims abstract description 55
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- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000002344 surface layer Substances 0.000 claims description 26
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 23
- 229910000278 bentonite Inorganic materials 0.000 claims description 22
- 239000000440 bentonite Substances 0.000 claims description 22
- 230000002209 hydrophobic effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 229920003086 cellulose ether Polymers 0.000 claims description 20
- 238000005336 cracking Methods 0.000 claims description 20
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 19
- 239000004816 latex Substances 0.000 claims description 19
- 229920000126 latex Polymers 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011083 cement mortar Substances 0.000 claims description 16
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 13
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 13
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 13
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 13
- 239000000839 emulsion Substances 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 8
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- 238000004080 punching Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 24
- 239000000463 material Substances 0.000 abstract description 8
- 238000005422 blasting Methods 0.000 abstract description 5
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- 238000002156 mixing Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 15
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 description 12
- 229920002689 polyvinyl acetate Polymers 0.000 description 12
- 239000011118 polyvinyl acetate Substances 0.000 description 12
- 229910000280 sodium bentonite Inorganic materials 0.000 description 12
- 229940080314 sodium bentonite Drugs 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 239000004567 concrete Substances 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 6
- 239000012774 insulation material Substances 0.000 description 6
- 239000004005 microsphere Substances 0.000 description 6
- 239000010451 perlite Substances 0.000 description 5
- 235000019362 perlite Nutrition 0.000 description 5
- 239000005871 repellent Substances 0.000 description 5
- 230000002940 repellent Effects 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 206010016807 Fluid retention Diseases 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910017059 organic montmorillonite Inorganic materials 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000281 calcium bentonite Inorganic materials 0.000 description 1
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- 229920002545 silicone oil Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7625—Details of the adhesive connection of the insulation to the wall
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
Abstract
The invention discloses high-strength gypsum-based sand blasting slurry for a sound and heat insulation machine, which belongs to the technical field of building decoration materials and preparation and aims to solve the problem that the gypsum-based mortar is not suitable for machine blasting construction in the prior art. The gypsum-based mortar has good fluidity and high stability, is suitable for machine spraying construction, has good heat preservation and heat insulation effects after construction, and has good sound insulation and water resistance. The invention correspondingly discloses a preparation method of high-strength gypsum-based sound-insulation heat-preservation machine sand blasting mortar, and a composite heat-preservation layer and a construction method of the composite heat-preservation layer by using the machine-sprayed mortar.
Description
Technical Field
The invention relates to the technical field of architectural decoration and construction, in particular to a high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry and a composite heat-preservation layer.
Background
The building heat-insulating material can be used for reducing heat loss of indoor and outdoor environments of a building and effectively reducing air conditioning load of the building, is an important component for building and implementing energy-saving reconstruction, but has the defect of poor waterproofness, so that the further development and application of the building heat-insulating material are limited. Therefore, a new energy-saving building thermal insulation material with moisture resistance is needed to be developed.
In order to solve the problems, the Chinese patent of application publication No. CN106316320A discloses a moisture-resistant gypsum-based composite thermal insulation material and a preparation method thereof, wherein the formula comprises the following components in parts by weight: 40-50 parts of high-strength gypsum, 25-50 parts of quartz sand, 10-15 parts of hydrophobic expanded perlite, 5-10 parts of adhesive, 4-8 parts of hydrophobic dispersible latex powder, 0.5-1 part of methyl triethoxysilane, 0.5-1 part of organic montmorillonite, 0.3-0.5 part of water-retaining thickener and 0.1-0.15 part of anti-cracking fiber. The moisture-proof and water-resistant effects of the product are greatly improved by adding the hydrophobic heat-insulating aggregate and the hydrophobic agent, and the material has high bonding strength and excellent compression resistance and crack resistance.
However, with the development of the architectural decoration industry, people pursue the high performance and environmental protection of the architectural decoration material, and meanwhile, the high-efficiency construction through modern mechanical equipment is a great trend of the industry development, such as the spraying construction with high efficiency, environmental protection and low labor intensity. The composite heat-insulating material contains quartz sand aggregate with higher density, and the quartz sand aggregate is easy to precipitate out when excessive water is added, so that the stability after mixing is not ideal enough; the adhesive, the organic montmorillonite, the water-retaining thickener and the hydrophobic dispersible emulsion powder have great influence on the viscosity of the heat-insulating material, and the heat-insulating material after being mixed with water has high viscosity and poor fluidity and is difficult to carry out spraying construction. Due to the factors, the composite heat-insulating material can only be constructed in a conventional batch scraping mode with low efficiency and high labor intensity, and cannot be suitable for modern spraying construction.
Therefore, how to develop a high-performance gypsum-based thermal insulation mortar which has good thermal insulation and sound insulation effects and is suitable for machine spraying construction is a problem to be solved urgently in the industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the high-strength gypsum-based sound and heat insulation machine sand blasting slurry which has the advantages of good heat insulation effect, good waterproof property and suitability for high-efficiency machine blasting construction.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry comprises the following components in parts by weight,
800 portions of white high-strength gypsum
30-60 parts of hollow glass beads
30-60 parts of light vitrified micro bubbles
60-120 parts of hydrophobic dispersible latex powder
3-5 parts of cellulose ether
2-10 parts of bentonite
4.0-5.5 parts of gypsum retarder
900 portions of water.
By adopting the technical scheme, the method at least has the following advantages: 1. the machine-spraying mortar prepared by the material ratio has good fluidity and good stability, is not easy to generate layering and bleeding phenomena, is suitable for spraying construction by using machine-spraying equipment, and has the advantages of high construction efficiency, less dust emission and low labor intensity. 2. White high-strength gypsum is used as a setting material and is mixed with hydrophobic dispersible latex powder for use, so that the mechanical spraying mortar has high bonding fastness, can be firmly attached to a construction base layer after being sprayed, is not easy to retract after being cured, and is not easy to crack, hole, bubble and other problems; meanwhile, the other types of gypsum and the high-strength gypsum used in the invention have performance difference in the aspects of compressive strength, setting time and the like, and have no applicability, so that the high-strength gypsum of the invention cannot be replaced by common semi-hydrated gypsum, desulfurized gypsum, phosphogypsum and the like. 3. The hollow glass beads and the light vitrified micro bubbles are used as heat preservation and insulation materials, so that the machine-made sand blasting slurry has excellent heat preservation and insulation effects and good sound insulation effects. And the two materials have excellent fluidity, can be uniformly dispersed by stirring at low speed when being stirred to prepare mortar, and are not easy to precipitate and separate in the process of machine spraying construction. 4. The surfaces of the hollow glass beads and the light vitrified beads are vitrified, the compactness is higher, compared with expanded perlite used in the prior art (CN 106316320A), the water repellent treatment is not needed, the water repellent performance is good, and compared with the expanded perlite, the hollow glass beads and the light vitrified beads are not easy to be broken due to stirring collision in the process of mixing mortar, so that the reduction of the heat insulation performance of the mortar caused by improper mixing is reduced. 5. The cellulose ether with the mixing amount can increase the water retention of the mechanical blasting slurry and has the effect of improving the construction performance of the thermal insulation material. 6. The hydrophobic dispersible latex powder can form a polymer film in the process of curing the machine-sprayed mortar, and a spatial three-dimensional network structure formed by long molecular chains can coat hollow glass beads and light vitrified beads, so that the bonding strength is improved, the shrinkage rate is reduced, meanwhile, a mortar system has good dispersion stability and is not easy to layer or separate water, and in addition, the hydrophobic dispersible latex powder also has the effect of adjusting the consistency and the water retention property of the mortar. 7. The bentonite can be selected from sodium bentonite, lithium bentonite or calcium bentonite, and the bentonite with the mixing amount has good slurrying property, so that the mortar is full and smooth; meanwhile, the bentonite is matched with the cellulose ether for use, so that the construction property of the mortar can be improved in a synergistic manner, the mortar is prevented from being adhered in a spraying pipeline, and the construction is convenient; in addition, the bentonite is doped to improve the bonding fastness of the mortar, and the high adsorbability of the bentonite enables the bentonite to permanently adsorb and fix the radioactive substances in the wall, so that the bentonite has the radiation-proof effect.
Further, the breaking strength of the white high-strength gypsum is more than 5 MPa.
By adopting the technical scheme, the mortar prepared from the gypsum with low breaking strength has insufficient strength and poor compactness after construction, so that the high-strength gypsum with the breaking strength of more than 5MPa is suitable.
Further, the vacuum density of the hollow glass micro-beads is 0.2-0.6g/cm3。
By adopting the technical scheme, the density of the hollow glass beads is higher than 0.6g/cm3In time, the density of the constructed mortar layer can be increased, and the heat preservation, heat insulation and sound insulation effects of the mortar layer are reduced; and the true density is less than 0.2g/cm3The hollow glass beads are easy to be broken in the stirring process, so that the heat preservation and insulation effects of the hollow glass beads are influenced, the hollow glass beads are easy to float up and are not easy to be uniformly stirred when being mixed with water due to low density, and the hollow glass beads are easy to float on the surface of mortar after being sprayed, so that the doping density is 0.2-0.6g/cm3The hollow glass beads have the best effect.
Further, the particle size of the hollow glass bead is 2 to 130 μm.
By adopting the technical scheme, the hollow glass microspheres with the particle size of more than 130 mu m are easy to collide with each other, crack or break in the stirring process, so that the heat preservation and heat insulation performance of the hollow glass microspheres is influenced; the hollow glass microspheres with the particle size of less than 2 mu m are easy to generate micro-aggregation phenomenon during stirring and are not easy to stir uniformly, so that the hollow glass microspheres with the particle size of 2-130 mu m are preferably doped.
Further, the particle size of the light vitrified micro bubbles is 125-300 μm.
By adopting the technical scheme, the light vitrified micro bubbles are formed by sintering inorganic aggregate, are easier to break compared with hollow glass micro bubbles, and are preferably doped with the light vitrified micro bubbles with the particle size of 125-300 mu m in order to fully exert the heat preservation and heat insulation effects. The light vitrified micro bubbles with the grain diameter larger than 300 mu m are dispersed in a mortar system, the distance between the light vitrified micro bubbles is larger, and the improvement of the heat preservation and insulation performance of a mortar layer is not uniform enough; the light vitrified micro bubbles with the grain diameter less than 125 mu m are easy to be broken in the mixing process, the micropore structure is damaged, and the heat preservation and insulation effect is influenced.
Further, the cellulose ether is hydroxyethyl methyl cellulose ether, hydroxypropyl methyl cellulose ether or a mixture of the hydroxyethyl methyl cellulose ether and the hydroxypropyl methyl cellulose ether with the viscosity of 30000-200000 MPa-s.
By adopting the technical scheme, the water retention property of the cellulose ether with low viscosity and the effect of inhibiting the hollow glass beads and the light vitrified beads from floating and layering are poor, so the viscosity is preferably 30000-200000mPa & s. The mechanical blasting mortar prepared from the cellulose ether with the viscosity has excellent and uniform heat insulation performance and excellent application property.
The invention also aims to provide a preparation method of the high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry, which has the advantages of simple process, good heat-preservation and heat-insulation effects of the prepared machine sand blasting slurry, good waterproofness and suitability for high-efficiency machine blasting construction.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar comprises the following steps,
step one, weighing the raw materials in parts by weight,
800 portions of white high-strength gypsum
30-60 parts of hollow glass beads
30-60 parts of light vitrified micro bubbles
60-120 parts of hydrophobic dispersible latex powder
3-5 parts of cellulose ether
2-10 parts of bentonite
4.0-5.5 parts of gypsum retarder
900 portions of water;
step two, firstly, adding the light vitrified micro bubbles and the hydrophobic dispersible emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding the white high-strength gypsum, the cellulose ether and the bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
and step five, finally, adding water, and uniformly stirring to obtain the high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry.
By adopting the technical scheme, the lightweight vitrified micro bubbles and the hydrophobic dispersible latex powder are fully mixed, so that the lightweight vitrified micro bubbles and the hydrophobic dispersible latex powder are more easily and uniformly dispersed in an anhydrous state, high-speed stirring is not needed, and the crushing of the lightweight vitrified micro bubbles is favorably reduced; then, sequentially adding gypsum, cellulose ether and bentonite for mixing, then adding the hollow glass microspheres and the gypsum retarder for uniformly mixing, firstly uniformly mixing the powder and the granules, and easily and uniformly mixing the materials with different particle sizes and densities without water; and finally, adding water, mixing and preparing the mixture into mortar with proper viscosity, wherein the added water can play a role in the cellulose ether, the hydrophobic dispersed emulsion powder and the bentonite, and the long molecular chains of the cellulose ether, the hydrophobic dispersed emulsion powder and the bentonite form a three-dimensional network structure or gel to prevent the layered segregation of the granules, so that the hollow glass beads and the light vitrified beads can keep the uniformly dispersed state and are not easy to delaminate and segregate. The preparation method has simple process steps, can reduce cracking or damage to the hollow glass beads and the light vitrified beads caused by mixing to the maximum extent in the preparation process, has uniform heat insulation performance and high stability of the mixed mortar, and is suitable for high-efficiency machine spraying construction by using a spraying machine.
Further, the stirring speed in the first step, the second step, the third step and the fourth step is not more than 800 rpm.
By adopting the technical scheme, the damage to the hollow glass beads and the light vitrified beads in the mixing process can be reduced to the greatest extent, so that the prepared mortar has uniform and excellent heat preservation and insulation effects.
The invention also aims to provide a composite heat-insulating layer applying the sand blasting slurry of the high-strength gypsum-based sound-insulation heat-preservation machine, which has the advantages of good heat-preservation and heat-insulation effects and good waterproofness.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a composite heat preservation layer, includes the wall body, gypsum base heat preservation layer and gypsum base surface course have set gradually from interior to exterior on the wall body, the gypsum base heat preservation layer is formed by the construction of above-mentioned gypsum base sound insulation heat preservation machine sandblast thick liquid spraying that excels in.
Another object of the present invention is to provide a method for constructing a composite heat-insulating layer, which has advantages of simple process, less cracking and bubbling of the constructed composite heat-insulating layer, and excellent heat-insulating and water-resistant properties.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method of a composite heat-insulating layer comprises the following steps,
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the high-strength gypsum-based sound-insulation heat-preservation machine sand-blasting slurry according to the preparation method of the high-strength gypsum-based sound-insulation heat-preservation machine sand-blasting slurry;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of spraying equipment; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
In conclusion, the invention has the following beneficial effects:
1. the machine-spraying sand slurry with specific material proportion has good fluidity and stability, is not easy to generate layering and water separation phenomena, is suitable for spraying construction by using machine-spraying equipment, and has the advantages of high construction efficiency, less dust emission and low labor intensity;
2. the white high-strength gypsum and the hydrophobic dispersible latex powder are mixed for use, so that the machine-sprayed mortar has high bonding fastness, and the problems of retraction, cracking, holes, bubbling and the like are not easy to generate after curing; meanwhile, the white high-strength gypsum of the invention can not be replaced by common semi-hydrated gypsum, desulfurized gypsum, phosphogypsum and the like;
3. the hollow glass beads and the light vitrified micro bubbles are used as heat insulation materials, so that the machine-made sand blasting slurry has excellent heat insulation effect and good sound insulation effect, can be uniformly dispersed by stirring at low speed when being mixed, and is not easy to precipitate and separate in the machine-made sand blasting construction process;
4. the surfaces of the hollow glass beads and the light vitrified beads are vitrified, the compactness is higher, compared with expanded perlite used in the prior art (CN 106316320A), the water repellent treatment is not needed, the water repellent performance is also good, and compared with the expanded perlite, the hollow glass beads and the light vitrified beads are not easy to be broken due to stirring collision in the process of mixing mortar, so that the reduction of the heat insulation performance of the mortar caused by improper mixing is reduced;
5. the cellulose ether and the hydrophobic dispersible latex powder have synergistic effect, so that the mortar system has stable dispersion uniformity and is not easy to layer or separate water while the mortar bonding strength is improved and the shrinkage rate is reduced;
6. the bentonite mixed in the invention has good slurrying performance, so that the mortar is full and smooth; meanwhile, the bentonite is matched with the cellulose ether for use, so that the construction property of the mortar can be improved in a synergistic manner, the mortar is prevented from being adhered in a spraying pipeline, and the construction is convenient; in addition, the bentonite is doped to improve the bonding fastness of mortar and permanently adsorb the radioactive substances in the fixed wall;
7. the preparation method of the high-strength gypsum-based sound-insulation and heat-preservation machine-sprayed mortar with the specific process steps has the advantages that the process is simple, the damage to the hollow glass beads and the light vitrified beads can be reduced to the greatest extent, the prepared machine-sprayed mortar has uniform and excellent heat-insulation effect, and is suitable for high-efficiency machine-sprayed construction;
8. the composite heat-insulating layer disclosed by the invention comprises a gypsum-based heat-insulating layer formed by spraying the sand blasting slurry of the high-strength gypsum-based sound-insulation heat-insulating machine disclosed by the invention, and is convenient to construct, good in heat-insulating effect and water-resistant;
9. the invention discloses a composite heat-insulating layer construction method which is characterized in that the machine-sprayed mortar prepared by the method is applied, the dust emission in the construction process is less, the construction operation is efficient, and the labor intensity is low.
Drawings
FIG. 1 is a schematic structural view of a composite insulation layer in the embodiment.
In the figure: 1. a wall body; 2. a gypsum-based insulating layer; 3. a gypsum-based facing.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples 1 to 6:
examples 1 to 6 all relate to high-strength gypsum-based sound-insulation and heat-preservation mortar, and the contents of the components in parts by weight are shown in the following table:
wherein the white high-strength gypsum is high-strength gypsum with the breaking strength of more than 5 MPa; the hollow glass beads have a true density of 0.4g/cm3The particle size is 114 mu m; the particle size of the light vitrified micro bubbles is 220 mu m; the gypsum retarder was a commercially available common gypsum retarder, and the gypsum retarders used in examples 1-6 were all QH80 high-efficiency gypsum retarders (shanghai kindle chemical company, ltd); the hydrophobic dispersible latex powder can be polyvinyl acetate latex powder or polyacrylate latex powder, and the polyvinyl acetate latex powder is selected in the embodiments 1 to 6; the bentonite can be sodium bentonite, lithium bentonite or calcium bentoniteSodium bentonite was selected in examples 1-6.
The cellulose ether can be hydroxyethyl methyl cellulose ether, hydroxypropyl methyl cellulose ether or a mixture of the hydroxyethyl methyl cellulose ether and the hydroxypropyl methyl cellulose ether with the viscosity of 30000-200000 MPa.s. The cellulose ethers selected for use in examples 1-6 are specified in the following table:
wherein, the hydroxyethyl methyl cellulose ether and the hydroxypropyl methyl cellulose ether are both powder.
Examples 7 to 18
Embodiments 7-18 all relate to a high strength gypsum based sound insulation heat preservation machine sandblast thick liquid, by weight, all include:
825 parts of white high-strength gypsum
Hollow glass bead 45 parts
45 parts of light vitrified micro bubbles
90 parts of polyvinyl acetate latex powder
4 parts of hydroxyethyl methyl cellulose ether
6 parts of sodium bentonite
4 parts of QH80 high-efficiency gypsum retarder
950 parts of water;
wherein the flexural strength of the white high-strength gypsum is more than 5MPa, and the viscosity of the hydroxyethyl methyl cellulose ether is 170000MPa s.
Examples 7 to 18 differ from each other in that: the selected hollow glass beads and the selected light vitrified beads are different, and are concretely shown in the following table,
example 19
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing the components according to the embodiment 1;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding the white high-strength gypsum, the hydroxyethyl methyl cellulose ether and the sodium bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine in the embodiment 1;
the stirring speed in the second step, the third step, the fourth step and the fifth step is 800 rpm.
Example 20
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing the components according to the embodiment 2;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
adding the white high-strength gypsum, the hydroxyethyl methyl cellulose ether, the hydroxypropyl methyl cellulose ether and the sodium bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine in the embodiment 2;
and in the second step, the third step, the fourth step and the fifth step, the stirring speed is 780 rpm.
Example 21
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing the components according to the embodiment 3;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding the white high-strength gypsum, the hydroxypropyl methyl cellulose ether and the sodium bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine of the embodiment 3;
and in the second step, the third step, the fourth step and the fifth step, the stirring speed is 760 rpm.
Example 22
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing the components according to the embodiment 4;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding the white high-strength gypsum, the hydroxyethyl methyl cellulose ether and the sodium bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine of the embodiment 4;
in the second step, the third step, the fourth step and the fifth step, the stirring speed is 740 rpm.
Example 23
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing the components according to the embodiment 5;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
adding the white high-strength gypsum, the hydroxyethyl methyl cellulose ether, the hydroxypropyl methyl cellulose ether and the sodium bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine of the embodiment 5;
the stirring speed in the second step, the third step, the fourth step and the fifth step is 720 rpm.
Example 24
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing the components according to the embodiment 6;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding the white high-strength gypsum, the hydroxypropyl methyl cellulose ether and the sodium bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine of the embodiment 6;
the stirring speed in the second step, the third step, the fourth step and the fifth step is 700 rpm.
Examples 25 to 36
A preparation method of high-strength gypsum-based sound-insulation heat-preservation machine spraying mortar specifically comprises the following steps:
step one, weighing according to parts by weight
825 parts of white high-strength gypsum
Hollow glass bead 45 parts
45 parts of light vitrified micro bubbles
90 parts of polyvinyl acetate latex powder
4 parts of hydroxyethyl methyl cellulose ether
6 parts of sodium bentonite
4 parts of QH80 high-efficiency gypsum retarder
950 parts of water;
firstly, adding the light vitrified micro bubbles and the polyvinyl acetate emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding white high-strength gypsum with the breaking strength of more than 5MPa, hydroxyethyl methyl cellulose ether and sodium bentonite into a stirrer for continuous stirring;
step four, adding the hollow glass beads and the QH80 high-efficiency gypsum retarder into a stirrer, and uniformly stirring;
step five, finally, adding water, and uniformly stirring to obtain the high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry;
and in the second step, the third step, the fourth step and the fifth step, the stirring speed is 750 rpm.
Examples 25 to 36 differ from each other only in that: the hollow glass beads and the light vitrified beads used are different, and are concretely shown in the following table,
performance testing
The comparative examples 1 to 3 were prepared from examples 10 to 12 having application publication No. CN106316320A and entitled "A moisture-resistant Gypsum-based composite thermal insulation Material and method for producing the same"; high-strength gypsum-based soundproof heat-retaining machine blast slurries prepared by the preparation methods of examples 19 to 24 were used as samples 1 to 6, respectively.
The performance of samples 1-6 and comparative examples 1-3 were tested with reference to DB 31/T895-2015 application technical Specification for reflective thermal insulation coating and desulfurized gypsum lightweight aggregate mortar thermal insulation system, and the test results are shown in the following table:
comparing the data in table 5 and table 6, it can be seen that the thermal conductivity coefficient of the high-strength gypsum-based soundproof and heat insulating machine sandblast slurry of the present invention or the high-strength gypsum-based soundproof and heat insulating machine sandblast slurry prepared by the preparation method of the present invention is as low as 0.030W/(m · K), the solar reflectance is above 55%, and the high-strength gypsum-based soundproof and heat insulating machine sandblast slurry has good reflective and heat insulating properties. And on the premise of not adding the binder and the methyltriethoxysilane, the dry strength, the compressive strength, the thermal conductivity and the solar reflectance all reach the same degree or better than those of the comparative example (CN 106316320A).
The bulk water absorption of comparative examples 1 to 3 and samples 1 to 6 was measured with reference to DG/TJ 08-2088-:
as can be seen from the experimental data in Table 7, the high-strength gypsum-based soundproof heat-retaining machine sandblast paste of samples 1 to 6 has a water absorption rate equivalent to that of comparative examples 1 to 3 in volume. Compared with the prior art (CN 106316320A), the high-strength gypsum-based sound-insulation heat-preservation machine sand-blasting slurry or the high-strength gypsum-based sound-insulation heat-preservation machine sand-blasting slurry prepared by the preparation method disclosed by the invention has a good water-resistant effect on the premise of not adding silicone oil (water repellent).
The high-strength gypsum-based soundproof heat retaining machine blast slurries prepared by the preparation methods of examples 25 to 36 were samples 7 to 18, respectively.
Comparative examples 4 to 9
Comparative examples 4 to 9 all relate to a high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry, which comprises the following components in parts by weight:
825 parts of white high-strength gypsum
Hollow glass bead 45 parts
45 parts of light vitrified micro bubbles
90 parts of polyvinyl acetate latex powder
4 parts of hydroxyethyl methyl cellulose ether
6 parts of sodium bentonite
4 parts of QH80 high-efficiency gypsum retarder
950 parts of water;
wherein the flexural strength of the white high-strength gypsum is more than 5MPa, and the viscosity of the hydroxyethyl methyl cellulose ether is 170000MPa s.
Comparative examples 4 to 9 differ from each other in that: the selected hollow glass beads and the selected light vitrified beads are different, and are concretely shown in the following table,
the thermal conductivity of each of samples 7 to 18 and comparative examples 4 to 9 was measured, and the results are shown in the following table:
as can be seen from the experimental data in Table 9, when the particle diameters of the hollow glass beads are consistent, the larger the true density is, the poorer the thermal insulation performance of the machine-sprayed mortar is, and the true density of the hollow glass beads is greater than 0.6g/cm3When the mortar is used, the heat conductivity coefficient of the mortar is obviously increased, and the heat insulation performance is poor; the vacuum density of the hollow glass beads is less than 0.2g/cm3When the mortar is used, the heat conductivity coefficient of the mortar is slightly increased, namely, the hollow glass beads with low true density are crushed to a certain degree in the process of mixing the mortar, so that the heat conductivity coefficient is slightly increased, and the heat insulation performance is poor. Therefore, the selected true density is 0.2-0.6g/cm3The hollow glass beads of (3) are most suitable.
From the experimental data in table 10, it is found that when the hollow glass beads have the same true density and the particle size is larger than 130 μm, the thermal conductivity of the mortar increases and the heat insulating property decreases. During the process of mixing mortar, the hollow glass beads with large particle size and low true density are easy to crack or even break due to collision, so that the heat conductivity coefficient is increased. When the particle size is less than 2 μm, the thermal conductivity is not obviously affected, but the difficulty of mixing mortar is increased due to the excessively small particle size of the hollow glass beads. Therefore, it is most preferable to select hollow glass microspheres having a particle size in the range of 2 to 130 μm.
As can be seen from the test data in table 11, the smaller the particle size of the lightweight vitrified small balls is, the lower the thermal conductivity of the mortar is, on the premise that the selected hollow glass small balls are the same, but when the particle size of the lightweight vitrified small balls is less than 120 μm, the change of the thermal conductivity is not significant. On the other hand, when the particle size of the light vitrified micro bubbles is larger than 300 μm, the heat conductivity coefficient of the mortar is obviously increased, which is not beneficial to improving the heat preservation and insulation effect of the mortar. Therefore, it is most suitable to select the light vitrified micro bubbles with the particle size of 120-300 μm.
Example 37
A composite heat-insulating layer, referring to fig. 1, comprises a wall body 1, wherein a gypsum-based heat-insulating layer 2 and a gypsum-based surface layer 3 are sequentially arranged on the surface of the wall body 1 from inside to outside. The gypsum-based heat-insulating layer 2 is formed by spraying the high-strength gypsum-based sound-insulating and heat-insulating mortar of the embodiment 1 by a spraying machine, and the gypsum-based surface layer 3 is formed by scraping common facing gypsum.
Example 38
A composite insulation layer substantially the same as in example 36, except that: the gypsum-based heat-insulating layer 2 is formed by spraying the high-strength gypsum-based sound-insulating and heat-insulating mortar of the embodiment 2 by using a spraying machine.
Example 39
A composite insulation layer substantially the same as in example 36, except that: the gypsum-based heat-insulating layer 2 is formed by spraying the high-strength gypsum-based sound-insulating and heat-insulating mortar of the embodiment 3 by a spraying machine.
Example 40
A composite insulation layer substantially the same as in example 36, except that: the gypsum-based heat-insulating layer 2 is formed by spraying the high-strength gypsum-based sound-insulating and heat-insulating mortar of embodiment 4 by using a spraying machine.
EXAMPLE 41
A composite insulation layer substantially the same as in example 36, except that: the gypsum-based heat-insulating layer 2 is formed by spraying the high-strength gypsum-based sound-insulating and heat-insulating mortar of the embodiment 5 by a spraying machine.
Example 42
A composite insulation layer substantially the same as in example 36, except that: the gypsum-based heat-insulating layer 2 is formed by spraying the high-strength gypsum-based sound-insulating and heat-insulating mortar of the embodiment 6 by a spraying machine.
Example 43
A construction method of a composite heat-insulating layer comprises the following steps:
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent; the interface agent can be a common interface treating agent sold in the market, and in the embodiment, the MGM-075 concrete interface treating agent (Gaomei building materials Co., Ltd., Anhui, America) is selected;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine according to the preparation method of the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine described in the embodiment 19;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of a spraying machine; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
Example 44
A construction method of a composite heat-insulating layer comprises the following steps:
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent; the interface agent can be a common interface treating agent sold in the market, and in the embodiment, the MGM-075 concrete interface treating agent (Gaomei building materials Co., Ltd., Anhui, America) is selected;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine according to the preparation method of the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine described in the embodiment 20;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of a spraying machine; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
Example 45
A construction method of a composite heat-insulating layer comprises the following steps:
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent; the interface agent can be a common interface treating agent sold in the market, and in the embodiment, the MGM-075 concrete interface treating agent (Gaomei building materials Co., Ltd., Anhui, America) is selected;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine according to the preparation method of the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine in the embodiment 21;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of a spraying machine; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
Example 46
A construction method of a composite heat-insulating layer comprises the following steps:
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent; the interface agent can be a common interface treating agent sold in the market, and in the embodiment, the MGM-075 concrete interface treating agent (Gaomei building materials Co., Ltd., Anhui, America) is selected;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine according to the preparation method of the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine described in the embodiment 22;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of a spraying machine; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
Example 47
A construction method of a composite heat-insulating layer comprises the following steps:
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent; the interface agent can be a common interface treating agent sold in the market, and in the embodiment, the MGM-075 concrete interface treating agent (Gaomei building materials Co., Ltd., Anhui, America) is selected;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine according to the preparation method of the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine described in the embodiment 23;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of a spraying machine; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
Example 48
A construction method of a composite heat-insulating layer comprises the following steps:
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent; the interface agent can be a common interface treating agent sold in the market, and in the embodiment, the MGM-075 concrete interface treating agent (Gaomei building materials Co., Ltd., Anhui, America) is selected;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine according to the preparation method of the sand blasting slurry of the high-strength gypsum-based sound and heat insulation machine in the embodiment 24;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the sand-blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine prepared in the step P3 on the wall surface by means of a spraying machine; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading this specification, but only fall within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a gypsum base sound insulation heat preservation machine sandblast thick liquid excels in, its characterized in that: comprises the following components in parts by weight,
800 portions of white high-strength gypsum
30-60 parts of hollow glass beads
30-60 parts of light vitrified micro bubbles
60-120 parts of hydrophobic dispersible latex powder
3-5 parts of cellulose ether
2-10 parts of bentonite
4.0-5.5 parts of gypsum retarder
900 portions of water
The vacuum density of the hollow glass bead is 0.2-0.6g/cm3；
The particle size of the hollow glass bead is 2-130 μm;
the particle size of the light vitrified micro bubbles is 125-300 mu m;
the cellulose ether is hydroxyethyl methyl cellulose ether with the viscosity of 30000-200000 MPa.s, hydroxypropyl methyl cellulose ether or a mixture of the hydroxyethyl methyl cellulose ether and the hydroxypropyl methyl cellulose ether;
the breaking strength of the white high-strength gypsum is more than 5 MPa.
2. A preparation method of sand blasting slurry of a high-strength gypsum-based sound and heat insulation machine is characterized by comprising the following steps of: comprises the following steps of (a) carrying out,
step one, weighing the raw materials in parts by weight,
800 portions of white high-strength gypsum
30-60 parts of hollow glass beads
30-60 parts of light vitrified micro bubbles
60-120 parts of hydrophobic dispersible latex powder
3-5 parts of cellulose ether
2-10 parts of bentonite
4.0-5.5 parts of gypsum retarder
900 portions of water;
the vacuum density of the hollow glass bead is 0.2-0.6g/cm3；
The particle size of the hollow glass bead is 2-130 μm;
the particle size of the light vitrified micro bubbles is 125-300 mu m;
the cellulose ether is hydroxyethyl methyl cellulose ether with the viscosity of 30000-200000 MPa.s, hydroxypropyl methyl cellulose ether or a mixture of the hydroxyethyl methyl cellulose ether and the hydroxypropyl methyl cellulose ether;
the breaking strength of the white high-strength gypsum is more than 5 MPa;
step two, firstly, adding the light vitrified micro bubbles and the hydrophobic dispersible emulsion powder into a stirrer, and uniformly stirring;
thirdly, adding the white high-strength gypsum, the cellulose ether and the bentonite into a stirrer to be continuously stirred;
step four, adding the hollow glass beads and the gypsum retarder into a stirrer, and uniformly stirring;
and step five, finally, adding water, and uniformly stirring to obtain the high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry.
3. The method for preparing the high-strength gypsum-based soundproof heat-preserving machine sand-blasting slurry according to claim 2, characterized in that: and step two, step three and step four, wherein the stirring speed is not more than 800 rpm.
4. The utility model provides a composite heat-insulating layer, includes the wall body, gypsum base heat-insulating layer and gypsum base surface course, its characterized in that have set gradually from interior to exterior on the wall body: the gypsum-based heat-insulating layer is formed by spraying the sand blasting slurry of the high-strength gypsum-based sound-insulating heat-insulating machine according to claim 1.
5. A construction method of a composite heat-insulating layer is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
p1, finishing a base layer, cleaning the skinning and cracking positions of the wall surface, plastering the skinning and cracking positions with cement mortar, removing residual ash residues to level the wall surface, and then coating an interface agent;
p2, punching ribs, namely making longitudinal marking ribs on the wall surface by using cement mortar, wherein the distance between the two ribs is less than or equal to 1.2m;
p3, preparing mortar, namely preparing high-strength gypsum-based sound-insulation heat-preservation machine sand-blasting slurry according to the preparation method of the high-strength gypsum-based sound-insulation heat-preservation machine sand-blasting slurry of the claim 2;
p4, constructing a gypsum-based heat-insulating layer, and uniformly spraying the high-strength gypsum-based sound-insulating heat-insulating machine sand-blasting slurry prepared in the step P3 on the wall surface by means of spraying equipment; then, a scraper is used for clinging to the mark rib, and the sprayed high-strength gypsum-based sound-insulation heat-preservation machine sand blasting slurry is scraped off from bottom to top to level the wall surface; manually scraping the internal corners by a scraper; curing to form a high-strength gypsum-based heat-insulating layer by completely curing the sand-blasting slurry of the gypsum-based sound-insulating heat-preserving machine;
p5, gypsum base surface layer construction, coating surface layer gypsum on the gypsum base heat-insulating layer by hand, grinding and pressing the gypsum, and maintaining until the gypsum base surface layer is completely cured, thereby completing the construction of the composite heat-insulating layer.
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| CN110642639A (en) * | 2019-11-05 | 2020-01-03 | 厦门高辰新材料有限公司 | Inorganic heat-insulating dry powder mortar and preparation method thereof |
| CN111004007B (en) * | 2020-01-07 | 2021-10-22 | 苏州启能新型建材科技有限公司 | Light plastering gypsum dry material and preparation method thereof |
| CN112646409B (en) * | 2020-12-30 | 2021-11-12 | 苏州大乘环保新材有限公司 | High-strength gypsum heat-insulating putty and preparation method thereof |
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Effective date of registration: 20220411 Address after: No. 99 Hongxi Road, Suzhou High-tech Zone, Jiangsu Province, 215000 Patentee after: Suzhou high tech Dacheng low carbon environmental protection new material development Co.,Ltd. Address before: No. 99 Hongxi Road, Suzhou High-tech Zone, Jiangsu Province, 215000 Patentee before: SUZHOU MAHAYANA ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. |