CN102173711A - High-volume slag self-leveling mortar - Google Patents
High-volume slag self-leveling mortar Download PDFInfo
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- CN102173711A CN102173711A CN2011100464784A CN201110046478A CN102173711A CN 102173711 A CN102173711 A CN 102173711A CN 2011100464784 A CN2011100464784 A CN 2011100464784A CN 201110046478 A CN201110046478 A CN 201110046478A CN 102173711 A CN102173711 A CN 102173711A
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- slag
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- high volume
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- flowing levelling
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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
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-volume slag self-leveling mortar and belongs to the field of building materials. The high-volume slag self-leveling mortar comprises the following ingredients in percentage by weight: 10 to 25 percent of ordinary Portland cement, 5 to 16 percent of aluminate cement, 4 to 7 percent of gypsum, 10 to 32 percent of slag miropowders, 30 to 42 percent of slag sand, 0.1 to 0.3 percent of high-efficiency water-reducing agent, 0.15 to 0.3 percent of setting retarder, 0.1 to 0.2 percent of water-retaining agent, 0 to 0.05 percent of defoaming agent and 1 to 3 percent of latex powders. Instead of river sand or artificial quartz sand and heavy calcium carbonate powders, slag miropowders and slag sand are widely used in self-leveling mortar, so as to improve the performance of self-leveling mortar, reduce the cost of self-leveling mortar products and reduce the slag accumulation and environmental pollution.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of ground self-leveling material.
Background technology
For adapting to improving constantly of people's modern way of life and quality of life, various public, public arenas improve constantly the requirement of smooth, decoration, cleaning, safety and the function on ground, thereby advanced the development of earth material, and expedited the emergence of the appearance of new earth material.On the other hand, along with modern industry improving constantly to the production environment requirement, industry ground slab is proposed more strict requirement, made ground become production hardware very important and that must pay much attention to and need certain fund, the technology of input to build, renovate and keep in repair.Gravity flowing levelling mortar is a kind of with inorganic or compositions such as organic gel gel material, fine aggregate, filler and admixture, adds to have flowability or complementary a little ground material of spreading out and putting on the levelling of just flowing after water stirs.Only need water cement ratio scope in accordance with regulations add the water uniform mixing during use, behind mechanical pumping or the artificial construction, need not manually floatingly, slurry forms flat surface in self gravitation effect current downflow.It has that degree of mobilization is big, construction fast, table and smooth advantage such as smooth, eliminate the conventional concrete poor flatness, ftracture, peel off, rise number of drawbacks such as ash, it is the ideal material of ground surface consolidations such as large supermarket, market, parking lot, factory floor, warehouse, be a developing direction of present building ground construction, market potential is very big.
In recent years, more to cement-based self-leveling mortar Products Development research report, but be ordinary Portland cement-high-alumina cement-gypsum ternary main body system basically, subsidiary material are dry powder, washing river sand or artificial quartz sand and various admixture.As patent CN1546416(polymer cement-based self-leveling material and preparation method thereof), technical scheme silicate cement 100, polymer emulsion powder 10-15, high-alumina cement 8-15, dry powder or flyash 5-8, water reducer 2.5-4, defoamer 0.5-2,0.1mm-1.25mm quartz sand 60-100 that this patent adopts.This technology mesosilicic acid salt cement consumption is up to 43%-66%, and polymer emulsion powder accounts for 4% ~ 7.4%, and the dry powder volume has only about 2%, water reducer 1%-2%.Can judge from above-mentioned patent formulation, its production cost is high and easy to crack, with the actual production demand certain gap is arranged.
Slag is the industry byproduct of a kind of Steel Plant discharging, and its structure mostly is vitreum, has the potential hydration activity, is mainly used in slag cement and cement concrete adulterant at present.The activity of slag micropowder self a little less than than cement many, only under the alkaline environment condition, its activity could be ejected fully, thereby further quicken the process of hydrated reaction of cement, and provide an ample space for hydrated product, improved the homogeneity of hydrated cementitious products distribution, made water mudrock structure dense.At present, slag only limits to replace part cement with slag powders in the applied research in levelling, to reduce from the levelling cost, improves operability, but the slag micropowder that can mix like this is just very limited, is unfavorable for scoriaceous a large amount of utilization.(slag micropowder is in the applied research of gravity flowing levelling mortar as people such as Zhang Dongmei, Sanming College's journal the 4th phase of December in 2008) adopting mortar is the 1:1.2 sand-cement slurry, replace cement with slag micropowder equivalent in certain proportion, the slag the optimum mix amount that obtains by test is 10% of a cement quality, the mortar performance optimum that the early strength water-reducing agent volume obtains when being 2.5 % of cement quality.But this research system is not real gravity flowing levelling mortar, and by above-mentioned described volume, its slag powders accounts for the system total amount less than 5%.Dong Sufen (preparation of cement-based self-leveling mortar and performance study, University Of Chongqing's master thesis 2009) Yan Jiu optimum formula is a cement: flyash: slag=70:5:25, water-cement ratio is 0.475, cement mortar rate==1:1.5, dicalcium powder is for sand 25%, ether of cellulose and defoamer are 0.050% and 0.125% of gelling material quality, and redispersable latex powder, economization agent, water reducer are respectively 1.75%, 2.0% and 0.9% of gelling material.The every performance of the mortar that this proportioning obtains satisfies the requirement of JC/T985-2005 " ground cement-based self-leveling mortar ".In this prescription, slag powders conversion volume only is 9.8%, and used sand is that fineness modulus is 1.5 quartz sand.How to make full use of industry byproduct and replace natural mineral raw and river sand, reduce consuming excessively of Nonrenewable resources, have important social value and practical significance.
Summary of the invention
The objective of the invention is to address the above problem and a kind of high volume slag gravity flowing levelling mortar is provided, the present invention utilizes slag micropowder and slag sand in the extensive application in levelling, replace river sand or artificial quartz sand and dry powder, both can improve the performance of gravity flowing levelling mortar, reduce the cost of gravity flow flat products, can alleviate the pressure of slag accumulation and environmental pollution again.
The technical solution adopted in the present invention is:
A kind of high volume slag gravity flowing levelling mortar, one-tenth by following weight per-cent is grouped into: ordinary Portland cement 10～25%, aluminate cement 5～16%, gypsum 4～7%, slag micropowder 10～32%, slag sand 30～42%, high efficiency water reducing agent 0.1～0.3%, retardant 0.15～0.3%, water-holding agent 0.1～0.2%, defoamer 0～0.05%, latex powder 1～3%.
Further, described high volume slag gravity flowing levelling mortar is grouped into by the one-tenth of following weight per-cent: ordinary Portland cement 12～20%, aluminate cement 10～15%, gypsum 5～6%, slag micropowder 20～30%, slag sand 40.5～41.4%, high efficiency water reducing agent 0.2～0.28%, retardant 0.2～0.29%, water-holding agent 0.15～0.18%, defoamer 0.01～0.04%, latex powder 2～2.7%.
Preferably, described ordinary Portland cement label be 42.5 grades and more than.
Preferably, described aluminate cement label for the CA50 level and more than.
Preferably, described gypsum is dehydrated gyp-and alpha semi-hydrated gypsum.
More preferably, described dehydrated gyp-is natural anhydrite, fluorgypsum, manually calcines dehydrated gyp-.
Preferably, the specific surface area of described slag micropowder is 300～500m2/kg.
Preferably, described slag sand particle diameter 0.15 mm～0.60mm.
Preferably, described retardant is DB-1 type and HN-1 retardant.
Preferably, described water reducer is the polycarboxylic acid high efficiency water reducing agent.
The present invention has the following advantages:
1) use the filler of industry byproduct as gravity flowing levelling mortar, its total volume greatly reduces the mortar cost up to more than 55%, has effectively utilized waste resource, has reached economy and environment double benefit; 2) slag micropowder mix the flowability that has promoted mortar, improved the later strength of mortar; 3) mixing of slag sand makes gelling material and aggregate bonding better, improved the intensity of mortar; 4) mortar has satisfactory stability, does not emanate, bleeding; 5) selected retardant makes the mortar open hour long, and the strength retrogression is little, has higher early strength; 6) this gravity flowing levelling mortar tensile bond strength height has good deformability, weather resistance and later stage dimensional stabilizing; 7) this self-leveling material section is widely used in the ground self-leveling levelling, ground cushion, and repair on the gravity flow levelling of floor finish layer and once visited place face, dusting ground and the defective ground of constructing.The high-content slag cement based self-leveling mortar intensity of the present invention's preparation reaches the requirement of CSLM S C25 F6 JC/T 985-2005 grade and above standard.
Embodiment
The preparation method of this high volume slag gravity flowing levelling mortar is: take by weighing needed starting material by formula rate, in mixer, add slag sand, slag micropowder, ordinary Portland cement, aluminate cement, gypsum, high efficiency water reducing agent, water-holding agent, retardant, defoamer, latex powder successively, fully mix, form product.Slag sand is by Steel Plant's water-granulated slag drying, screening, and getting size range is the sand of 0.15mm～0.6mm particle size range.
Embodiment 1
High volume slag gravity flowing levelling mortar in this enforcement is counted by weight percentage, and it consists of: label is 42.5 grades of ordinary Portland cements 18%, and label is a CA50 level aluminate cement 12%, anhydrite 6.3%, specific surface area 350m
2/ kg slag micropowder 20%, particle diameter are 0.15mm slag sand 41%, high efficiency water reducing agent 0.2%, DB-1 retardant 0.3%, water-holding agent 0.15%, defoamer 0.05%, latex powder 2%.
Embodiment 2:
High volume slag gravity flowing levelling mortar in this enforcement is counted by weight percentage, and it consists of: label is 42.5 grades of ordinary Portland cements 12%, and label is a CA50 level aluminate cement 8%, anhydrite 5%, specific surface area 500m
2/ kg slag micropowder 32%, particle diameter are 0.60mm slag sand 40.5%, high efficiency water reducing agent 0.2%, HN-1 retardant 0.15%, water-holding agent 0.15%, defoamer 0.05%, latex powder 2%.
Embodiment 3:
High volume slag gravity flowing levelling mortar in this enforcement is counted by weight percentage, and it consists of: label is 42.5 grades of ordinary Portland cements 25%, and label is a CA50 level aluminate cement 15%, anhydrite 6.5%, specific surface area 350m
2/ kg slag micropowder 20%, particle diameter are 0.15mm slag sand 30%, high efficiency water reducing agent 0.3%, retardant 0.3%, water-holding agent 0.15%, defoamer 0.05%, latex powder 2.7%.
Embodiment 4:
High volume slag gravity flowing levelling mortar in this enforcement is counted by weight percentage, and it consists of: label is 42.5 grades of ordinary Portland cements 20%, and label is a CA50 level aluminate cement 10%, alpha semi-hydrated gypsum 6%, specific surface area 400m
2/ kg slag micropowder 20%, particle diameter are 0.60mm slag sand 41.4%, high efficiency water reducing agent 0.2%, DB-1 retardant 0.2%, water-holding agent 0.15%, defoamer 0.05%, latex powder 2%.
The high volume slag gravity flowing levelling mortar that utilizes the proportioning of above four embodiment to obtain, good fluidity, the open hour are long, intensity is higher, be applicable to floor leveling, ground cushion, the gravity flow levelling of floor finish layer and once visited place face, dusting ground and construction portion repair on defective ground.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. one kind high volume slag gravity flowing levelling mortar, it is characterized in that, be grouped into by the one-tenth of following weight per-cent: ordinary Portland cement 10～25%, aluminate cement 5～16%, gypsum 4～7%, slag micropowder 10～32%, slag sand 30～42%, high efficiency water reducing agent 0.1～0.3%, retardant 0.15～0.3%, water-holding agent 0.1～0.2%, defoamer 0～0.05%, latex powder 1～3%.
2. high volume slag gravity flowing levelling mortar according to claim 1, it is characterized in that, be grouped into by the one-tenth of following weight per-cent: ordinary Portland cement 12～20%, aluminate cement 10～15%, gypsum 5～6%, slag micropowder 20～30%, slag sand 40.5～41.4%, high efficiency water reducing agent 0.2～0.28%, retardant 0.2～0.29%, water-holding agent 0.15～0.18%, defoamer 0.01～0.04%, latex powder 2～2.7%.
3. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that, described ordinary Portland cement label be 42.5 grades and more than.
4. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that, described aluminate cement label for the CA50 level and more than.
5. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that described gypsum is dehydrated gyp-and alpha semi-hydrated gypsum.
6. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that described dehydrated gyp-is natural anhydrite, fluorgypsum, manually calcines dehydrated gyp-.
7. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that the specific surface area of described slag micropowder is 300～500m
2/ kg.
8. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that described slag sand particle diameter 0.15 mm～0.60mm.
9. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that described retardant is DB-1 type and HN-1 retardant.
10. according to claim 1 or 2 any described high volume slag gravity flowing levelling mortars, it is characterized in that described water reducer is the polycarboxylic acid high efficiency water reducing agent.
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| CN102126849A (en) * | 2011-03-24 | 2011-07-20 | 济南大学 | Dry mixed mortar |
| WO2013040788A1 (en) * | 2011-09-23 | 2013-03-28 | Rohm And Haas Company | Low temperature mortar for exterior insulation finish system |
| WO2013086722A1 (en) * | 2011-12-15 | 2013-06-20 | Dow Global Technologies Llc | Dry mix formulations containing carboxylated styrene-butadiene redispersible polymer powders and alumina rich containing cements |
| WO2013163010A1 (en) * | 2012-04-27 | 2013-10-31 | United States Gypsum Company | Dimensionally stable geopolymer compositions and method |
| CN104176957A (en) * | 2014-08-10 | 2014-12-03 | 安徽锦洋氟化学有限公司 | Method for modifying fluorine gypsum by using redispersible latex powder |
| CN104478374A (en) * | 2014-12-21 | 2015-04-01 | 张学健 | Cement-base self-leveling mortar |
| CN104671726A (en) * | 2013-11-28 | 2015-06-03 | 立邦涂料（中国）有限公司 | High-strength cement-based self-leveling mortar |
| CN104961491A (en) * | 2015-06-13 | 2015-10-07 | 刘政辰 | Exterior wall self-heat-insulation building blocks and making method thereof |
| US9169382B2 (en) | 2012-03-09 | 2015-10-27 | Dow Global Technologies Llc | Carboxyl group containing acrylic RDP and dry mix cement formulations containing them |
| CN105481328A (en) * | 2015-11-30 | 2016-04-13 | 济南大学 | Self-leveling bed course and construction method thereof |
| CN105819800A (en) * | 2016-03-15 | 2016-08-03 | 盐城工学院 | Cement base self-leveling mortar prepared from nickel slag for preparing grounds and preparation method thereof |
| CN106007622A (en) * | 2016-05-24 | 2016-10-12 | 福建建工建材科技开发有限公司 | Beta-hemihydrate sulfurized gypsum based surface layer self-leveling mortar |
| CN106478030A (en) * | 2016-11-07 | 2017-03-08 | 盐城工学院 | Mattess cement-base wear-resistant material and preparation method thereof of nickel slag preparation |
| CN106517902A (en) * | 2016-10-18 | 2017-03-22 | 武汉钢铁股份有限公司 | Steel slag washing dust mud based geopolymer self-leveling mortar for mine backfilling and preparation method thereof |
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| US9656916B2 (en) | 2012-04-27 | 2017-05-23 | United States Gypsum Company | Dimensionally stable geopolymer composition and method |
| CN107935518A (en) * | 2017-12-13 | 2018-04-20 | 上海东大化学有限公司 | A kind of highly doped steel slag gravity flowing levelling mortar of environment-friendly type and preparation method thereof |
| CN108059429A (en) * | 2017-11-28 | 2018-05-22 | 上海中冶环境工程科技有限公司 | A kind of gravity flowing levelling mortar and preparation method thereof |
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| WO2013040788A1 (en) * | 2011-09-23 | 2013-03-28 | Rohm And Haas Company | Low temperature mortar for exterior insulation finish system |
| WO2013086722A1 (en) * | 2011-12-15 | 2013-06-20 | Dow Global Technologies Llc | Dry mix formulations containing carboxylated styrene-butadiene redispersible polymer powders and alumina rich containing cements |
| CN103998393A (en) * | 2011-12-15 | 2014-08-20 | 陶氏环球技术有限公司 | Dry mix formulations containing carboxylated styrene-butadiene redispersible polymer powders and alumina rich containing cements |
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Application publication date: 20110907 |