CN110424625B - Formwork-free composite heat-insulation sound-insulation board and heat-insulation sound-insulation floor building method - Google Patents
Formwork-free composite heat-insulation sound-insulation board and heat-insulation sound-insulation floor building method Download PDFInfo
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- CN110424625B CN110424625B CN201910742452.XA CN201910742452A CN110424625B CN 110424625 B CN110424625 B CN 110424625B CN 201910742452 A CN201910742452 A CN 201910742452A CN 110424625 B CN110424625 B CN 110424625B
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 84
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- 238000009415 formwork Methods 0.000 claims description 30
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
- E04C2/2885—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material with the insulating material being completely surrounded by, or embedded in, a stone-like material, e.g. the insulating material being discontinuous
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a formwork-free composite heat-insulating sound-insulating plate, wherein an upper polymer cement mortar reinforcing layer and a lower polymer cement mortar reinforcing layer are arranged on two sides of a light heat-insulating sound-insulating layer, glass fiber mesh cloth is arranged in each of the upper polymer cement mortar reinforcing layer and the lower polymer cement mortar reinforcing layer, and a pouring filling part which extends inwards and can be used for pouring and filling concrete is arranged on each of the upper polymer cement mortar reinforcing layer. The invention also discloses a construction method of the heat-insulating and sound-insulating floor slab, which comprises the following steps: a: prefabricating the formwork-free composite heat-insulating sound-insulating board; b: paving a formwork-free composite heat-insulating sound-insulating plate, and pouring a reinforced concrete layer; c: and removing the template support system and carrying out subsequent decoration construction. By adopting the formwork-free composite heat-insulating and sound-insulating plate and the heat-insulating and sound-insulating floor slab construction method, the additional laying and dismantling of templates are avoided, and the formwork-free composite heat-insulating and sound-insulating plate and the reinforced concrete layer are reliably connected into the combined plate integrating bearing, heat insulation, sound insulation and separation, so that the construction procedures are reduced, and the potential safety hazard is reduced.
Description
[ Field of technology ]
The invention relates to a formwork-free composite heat-insulation sound-insulation board and a heat-insulation sound-insulation floor building method, which are applied to buildings, in particular to assembled buildings, and belong to the field of building materials.
[ Background Art ]
With the great development of fabricated buildings in China, a large number of buildings adopting fabricated concrete structures are built. Fabricated floors are one of the important components of horizontal elements in fabricated buildings. At present, the assembled floor mainly comprises two forms of assembled concrete superimposed sheets and metal floor support plates.
The fabricated concrete composite slab is an integral flexural member formed by casting concrete on top of a precast concrete slab at a construction site. The precast concrete slab has the advantages that the precast concrete slab is used as a formwork for pouring concrete at the top, a large number of temporary formworks are saved, and all or part of formwork supports are omitted. The method has the defects that the whole plate is manually separated from the whole plate along the thickness direction for two times, the integrity is poor, meanwhile, the thickness of the assembled concrete laminated slab is generally not less than 120mm, the prefabricated part is not less than 60mm, and the post-cast concrete laminated layer is not less than 60mm. The thickness of the floor slab is 100mm far greater than that of the traditional building, and the engineering cost is much higher; the construction joint exists between the assembled concrete superimposed sheets, and the later shrinkage cracking is easy to occur; the prefabricated part of the fabricated concrete laminated slab is difficult to cut into blocks again at a construction site, so that the construction flexibility is poor; the thickness of the plate is generally within 150mm, the sound insulation and heat preservation performance is poor, the green building requirement cannot be met, and the sound insulation and heat preservation measures are additionally added on the plate surface or the plate bottom.
The metal floor support plate is an integral floor formed by casting a cast-in-place concrete together with a lining plate made of concave-convex alternate profiled thin steel plates and supporting the cast-in-place concrete on a beam. Because the profiled sheet is used as a formwork for casting concrete, it is used as a permanent formwork, saving a large number of temporary forms and omitting all or part of the formwork support. The defect is that the fireproof and antirust capabilities of the profiled steel sheet are poor; the metal floor carrier plate has poor sound insulation and heat preservation performance, can not meet the requirements of green buildings, and needs to additionally add sound insulation and heat preservation measures on the plate surface or the plate bottom.
The modern healthy and beneficial buildings have strict requirements on sound insulation, heat insulation and heat preservation of floors:
Floor sound insulation
Floor sound insulation is one of the important factors for ensuring the residential environment, but the prior building design has paid attention to the defects. With the continuous improvement of the requirements of people on the quality of houses and the gradual soundness of government-related living environment laws, the problem of floor sound insulation should be highly emphasized in the house design. The sound insulation of the floor slab comprises the isolation performance of two kinds of sound, namely impact sound and air sound. Generally, the air sound insulation standard of the floor slab is not difficult to be achieved, and the reinforced concrete materials commonly used at present have better air sound insulation performance. According to measurement, the evaluation quantity of the air sound insulation single value of the reinforced concrete with the thickness of 120mm is about 50dB, and if other constructional measures are added, the effect is better, but the reinforced concrete with the thickness of 120mm is insufficient for isolating the impact sound. In commercial houses provided for consumers in the real estate market of China at present, a large number of houses are designed according to the primary decoration standard, wherein the general thickness of a reinforced concrete structural layer of a floor is between 100 and 150mm, a cement mortar leveling layer is arranged on the structural layer, and the weight-metering normalized impact sound pressure level of the floor is basically about 80 dB. If the wood floor is paved on the concrete floor during secondary decoration of households, the sound insulation of the floor is greatly improved, and the sound insulation effect of the impact sound is good for both the solid wood floor and the composite wood floor, the actual measurement value is generally less than 70dB, and the low limit requirement of the residential design specification on the impact sound of the floor is met. However, if the facing material is hard material such as granite and floor tile, the normalized impact sound pressure level of the floor slab can only be maintained at about 80dB, and the standard requirement can not be met. The low-limit requirement on the evaluation quantity of the impact sound insulation single value of various building floor slabs in the civil building sound insulation design specification GB50118-2010 is generally less than 75dB.
For reinforced concrete floors with hard materials as facing materials, one of the more popular methods at present is a floating floor method, namely, a layer of damping floor mat with the thickness of generally 4-10 mm is paved on a structural floor slab, 40-80 mm of concrete is poured on the floor mat, and reinforcing steel bars are built in the floor mat, so that a sandwich elastic sandwich structure is formed. According to the detection conclusion of the physical laboratory of the Qinghua university building, the improvement quantity DeltaLw of the weight-counting impact sound pressure level of the vibration-damping floor mat type floating floor compared with the original concrete floor slab can reach 22dB (the specific numerical value is related to the material and elasticity of the floor mat), the on-site actual-measurement impact sound insulation quantity Ln, w can be reduced from 80dB to 56-58 dB, and living noise on the floor is greatly reduced. The construction method is mature day by day, the floating floor slab structure is adopted in real estate projects such as Beijing Olympic garden, shenzhen mangrove western coast, zhejiang Jinhua Tianlong land, and the like, actual measurement data completely meet the national standard requirement, and the sound insulation effect is ideal. However, the floating floor has the problem that the floor is excessively occupied, the concrete layer on the vibration reduction floor is easy to crack, and a water-series layer is formed between the vibration reduction floor and the concrete layer contacted with the vibration reduction floor. Meanwhile, the floating floor sound insulation layer is arranged on the adjacent household platform, so that management and maintenance in the use process are inconvenient, and the vibration reduction floor pad is often damaged in the decoration process by the household on the upper floor.
In addition to the sound insulation treatment on the surface layer, recently, experimental researches conducted by the building physical laboratory of the university of Qinghua show that a damping plate can be stuck on the lower surface of the floor slab to damp the vibration of the floor slab, so that the sound insulation quantity is improved. Experiments show that after a layer of 25mm thick damping plate prepared from special rubber and asphalt mixture is attached to the lower skin of a concrete ceiling with the thickness of 100mm and plastering decoration treatment is carried out, the impact sound insulation quantity can be improved by 7-10 dB, and the impact sound insulation quantity of a concrete floor slab can reach the national standard low limit requirement Ln, and w is less than or equal to 75dB by adopting the method. Damping plate methods are often used in situations where sound insulation treatment cannot be performed on the upper surface of the floor slab. The lower surface of the floor slab is stuck with the damping plate, so that the construction requirement is high, the damping plate is incompatible with adjacent concrete and mortar materials, the adhesion force is difficult to guarantee, and the damping plate is easy to fall off in use to cause safety accidents.
In addition, the suspended ceiling below the concrete ceiling can also effectively improve the sound insulation of the floor, and the sound pressure level of the anti-collision sound of the floor after the suspended ceiling is added can be below 75 dB. However, suspended ceilings also have the problems of excessive floor occupation and high cost.
(II) floor heat preservation and insulation
In China, the heat efficiency of a heating system is low due to the heat preservation and insulation level difference of the building enclosure structure. The related data show that the heating energy consumption per unit building area in China is about 3 times that of developed countries with similar climatic conditions. After the national standard of civil building thermal design standard and public building energy-saving design standard are issued and implemented, the heat preservation and heat insulation performance of the floor slab is definitely specified. In order to meet the requirements of heat preservation and heat insulation performance, the current common practice is to lay or paste an additional heat preservation and heat insulation layer on the upper surface of the floor slab after construction is completed, wherein the additional heat preservation and heat insulation layer adopts light high-efficiency heat preservation materials such as EPS boards, XPS boards, inorganic heat preservation boards, rock wool, glass wool, heat preservation slurry and the like. The problem that the adjacent concrete and mortar materials are incompatible and the cohesive force is difficult to guarantee exists when the thermal insulation layer is paved and adhered on the surface of the floor, and the problem of empty quality between the thermal insulation layer and the connection position of the mortar and the concrete is often caused.
The light high-efficiency heat-insulating material such as a molded polystyrene foam (EPS) board, an extruded polystyrene foam (XPS) board, a phenolic board, a polyurethane foam board, an inorganic heat-insulating board, rock wool, glass wool, a cement-based polyphenyl particle composite heat-insulating board, heat-insulating slurry and the like generally has good heat-insulating performance and certain sound-insulating and sound-insulating functions, is an ideal heat-insulating, heat-insulating and sound-insulating material, but generally has the problems of lower strength and poorer bonding capability between the surface and cement mortar.
Thus, there is still a great room for improvement in the current fabricated concrete floor slab, and the present invention is formally based on the above-mentioned shortcomings.
[ Invention ]
The invention aims to overcome the defects of the prior art and provide the formwork-free composite heat and sound insulation board which is simple in structure, low in cost, excellent in heat and sound insulation performance and simple to install. In the assembled building, the formwork-free composite heat-insulating sound-insulating board can be used as a permanent formwork in the construction of cast-in-place concrete floors, the additional laying and dismantling of the formworks are avoided, and the formwork-free composite heat-insulating sound-insulating board is reliably connected with a reinforced concrete layer to form a composite board integrating bearing, heat insulation, sound insulation and separation, so that the construction procedures are reduced, and the potential safety hazard is reduced.
The invention also provides a construction method of the heat-preservation sound-insulation floor slab. The floor slab construction method has the advantages that the working procedure is simple, the formwork-free composite heat-insulating and sound-insulating plate is used as a permanent formwork, the construction period can be shortened without additionally paving the formwork and detaching the formwork, the formwork-free composite heat-insulating and sound-insulating plate and the reinforced concrete layer are reliably connected into the combined plate integrating bearing, heat insulation and sound insulation, separation into a whole, the structure is simple, the cost is low, the heat insulation and sound insulation performances are excellent, and the potential safety hazard is low in the construction process.
The invention is realized by the following technical scheme:
a mould-free composite heat-insulating sound-insulating board is characterized in that: the lightweight heat-insulating sound-insulating board comprises a lightweight heat-insulating sound-insulating layer 11, wherein an upper polymer cement mortar reinforcing layer 12 and a lower polymer cement mortar reinforcing layer 13 are arranged on the upper side and the lower side of the lightweight heat-insulating sound-insulating layer 11, glass fiber mesh cloth for enhancing the overall mechanical property of the formwork-free composite heat-insulating sound-insulating board is arranged in the upper polymer cement mortar reinforcing layer 12 and the lower polymer cement mortar reinforcing layer 13, and a pouring filling part 14 which extends inwards and can be filled with concrete is arranged on the upper polymer cement mortar reinforcing layer 12.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the bottom of the pouring filling part 14 is provided with a drainage channel 15 which downwards penetrates through the light heat-insulating sound-insulating layer 11 and the lower polymer cement mortar reinforcing layer 13.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the pouring filling part 14 extends inwards into the light heat-insulating sound-insulating layer 11 or extends inwards and penetrates through the lower polymer cement mortar reinforcing layer 13 to form a through hole.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the upper polymer cement mortar reinforcing layer 12, the light heat-insulating sound-insulating layer 11 and the lower polymer cement mortar reinforcing layer 13 are provided with counter bores, and the pouring filling part 14 and the drainage channel 15 are formed by the counter bores; or the pouring filling part 14 is a strip-shaped groove formed in the polymer cement mortar reinforcing layer 12at the upper side, the longitudinal section of the strip-shaped groove is in a dovetail groove shape, and the bottom of the dovetail groove is provided with a drainage channel 15.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the pouring filling part 14 is small in opening and large in bottom.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the periphery of the light heat-insulating sound-insulating layer 11 is provided with a peripheral polymer cement mortar reinforcing layer, and the light heat-insulating sound-insulating layer 11 is formed by bonding a plurality of light heat-insulating sound-insulating plates.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the light heat-insulating sound-insulating layer 11 is an extruded polystyrene foam plastic plate or a molded polystyrene foam plastic plate or a foam glass plate or a cement-based foam heat-insulating plate or a polyurethane foam plastic plate or a cement-based polyphenyl particle composite heat-insulating plate.
The mould-supporting-free composite heat-insulating sound-insulating board is characterized in that: the glass fiber mesh cloth is alkali-resistant glass fiber mesh cloth.
A building method of a heat-insulating and sound-insulating floor slab is characterized by comprising the following steps: the method comprises the following steps:
a: the method comprises the steps of prefabricating a composite heat-insulating sound-insulating board 1, coating polymer cement mortar on two sides of a light heat-insulating sound-insulating layer 11 to obtain an upper polymer cement mortar reinforcing layer 12 and a lower polymer cement mortar reinforcing layer 13, wherein glass fiber mesh cloth for enhancing the overall mechanical property of the composite heat-insulating sound-insulating board is arranged in each of the upper polymer cement mortar reinforcing layer 12 and the lower polymer cement mortar reinforcing layer 13, an inwards extending pouring filling part 14 is arranged on the upper polymer cement mortar reinforcing layer 12, and a drainage channel 15 which penetrates through the light heat-insulating sound-insulating layer 11 and the lower polymer cement mortar reinforcing layer 13 downwards is arranged at the bottom of the pouring filling part 14;
B: after the formwork support system 4 is erected, a plurality of composite heat-insulating sound-insulating boards 1 are paved and fixed on the formwork support system 4, the upper polymer cement mortar reinforcing layer 12 faces upwards, then steel bars are bound on the upper polymer cement mortar reinforcing layer 12, embedded water and electricity pipelines are installed, concrete is poured, and part of concrete is filled into the pouring filling part 14 to form a reinforced concrete layer 2;
c: and after the reinforced concrete layer 2 is solidified to reach the strength, removing the formwork support system 4, and carrying out subsequent decoration construction on the lower surface of the lower polymer cement mortar reinforcing layer 13 and the upper surface of the reinforced concrete layer 2.
The heat-preservation and sound-insulation floor construction method is characterized by comprising the following steps of: in the step A, before polymer cement mortar is coated on the upper side and the lower side of the light heat-insulating sound-insulating layer 11, rough surfaces are formed on the upper surface and the lower surface of the light heat-insulating sound-insulating layer 11, an interface agent is coated, and before concrete is filled in the step B, water is sprayed on the upper polymer cement mortar reinforcing layer 12 to moisten the upper polymer cement mortar reinforcing layer.
Compared with the prior art, the invention has the following advantages:
1. The upper surface of the formwork-free light heat-insulating and sound-insulating layer is provided with the upper polymer cement mortar reinforcing layer internally provided with the glass fiber mesh cloth, the lower surface of the light heat-insulating and sound-insulating layer is provided with the lower polymer cement mortar reinforcing layer internally provided with the glass fiber mesh cloth, and the upper polymer cement mortar reinforcing layer and the lower polymer cement mortar reinforcing layer are tightly adhered with the light heat-insulating and sound-insulating layer, so that the bending resistance, the panel impact resistance and the wear resistance of the formwork-free composite heat-insulating and sound-insulating plate are greatly improved, and the formwork-free light heat-insulating and sound-insulating plate can be used as a template for pouring concrete floors. The formwork-free composite heat-insulating sound-insulating plate is used as a permanent template in construction of an assembled floor slab, after the construction and installation are completed, the reinforced steel bars are bound on the formwork-free composite heat-insulating sound-insulating plate, the water and electricity pipelines are reserved, then the floor slab concrete is poured, and the floor slab concrete is formed at one time, so that the layered forming of the assembled concrete laminated slab is avoided, the integral effect is poor, the quality problem of shrinkage cracking easily occurs between the assembled concrete laminated slab and the assembled concrete laminated slab in the use process, and the formwork-free composite heat-insulating sound-insulating plate is convenient to cut and process. After the floor slab is poured, the thickness of the floor slab concrete is consistent with that of the traditional building floor slab, and is far smaller than that of the assembled concrete laminated slab, so that a large amount of manufacturing cost is saved. And the upper polymer cement mortar reinforcing layer is provided with an inward pouring filling part which can extend into the light heat-insulating sound-insulating layer, so that when the formwork-free composite heat-insulating sound-insulating board is used for manufacturing a concrete floor slab, concrete can be poured into the pouring filling part, so that the reinforced concrete layer of the floor slab and the formwork-free composite heat-insulating sound-insulating board are connected together through effective mechanical engagement except bonding of contact surfaces, the connection capability of the reinforced concrete layer and the formwork-free composite heat-insulating sound-insulating board is greatly improved, the safety in use is improved, and the composite floor slab formed by the reinforced concrete layer and the formwork-free composite heat-insulating sound-insulating board has excellent heat-insulating sound-insulating performance and simple structure, and effectively reduces the construction cost.
2. The bottom of the pouring filling part of the formwork-free composite heat-insulating sound-insulating plate is provided with the through tiny drainage channel, so that water sprayed on the composite heat-insulating sound-insulating plate can be drained from the drainage channel in the floor manufacturing and construction process, the surface of the pouring filling part of the formwork-free composite heat-insulating sound-insulating plate is kept moist but not water is accumulated, the concrete and the formwork-free composite heat-insulating sound-insulating plate are better combined, and the engineering quality is improved.
3. When the formwork-free composite heat-insulating sound-insulating board is used for manufacturing a concrete floor slab, the formwork-free composite heat-insulating sound-insulating board is used as a composite board formed by a permanent formwork and a reinforced concrete floor slab, integrates bearing, separation, sound insulation and heat insulation, and is free from additionally paving the formwork and disassembling the formwork, the construction process is simpler, and the construction cost is reduced. The polymer cement mortar reinforcing layers on the upper surface and the lower surface of the formwork-free composite heat-insulating sound-insulating board are added with polymers, so that the polymer cement mortar and the light heat-insulating sound-insulating layer can be tightly adhered, the polymer cement mortar and the follow-up plastering mortar are high in compatibility, and the risk of falling off of a ceiling plastering layer is reduced.
4. The upper and lower side polymer cement sand reinforcing pulps of the upper and lower surfaces of the formwork-free composite heat-insulating and sound-insulating plate are all incombustible materials, so that the overall fire resistance of the formwork-free composite heat-insulating and sound-insulating plate is greatly improved.
5. The heat-insulating and sound-insulating fabricated floor slab using the formwork-free composite heat-insulating and sound-insulating plate has the advantages of simple process, simple structure, low cost, good sound-insulating and heat-insulating effect, reliable connection with reinforced concrete slabs, reduction of construction process, reduction of potential safety hazards in the using process, and suitability for popularization and application.
[ Description of the drawings ]
FIG. 1 is a perspective view of a formwork-free composite thermal insulation and sound insulation board of the invention;
FIG. 2 is a cross-sectional view of the formwork-free composite thermal insulation and sound insulation board of FIG. 1;
FIG. 3 is a perspective view of another embodiment of a formwork-free composite thermal and acoustic panel of the present invention;
FIG. 4 is a perspective view of another embodiment of a formwork-free composite thermal and acoustic panel of the present invention;
FIG. 5 is a cross-sectional view of the formwork-free composite thermal insulation and sound insulation panel of the present invention in combination with a reinforced concrete layer;
Fig. 6 is a schematic diagram of the thermal insulation and sound insulation floor slab in the construction process.
[ Detailed description ] of the invention
The invention is further described below with reference to the accompanying drawings:
As shown in fig. 1 to 4, a formwork-free composite thermal insulation and sound insulation board comprises a light thermal insulation and sound insulation layer 11, wherein an upper polymer cement mortar reinforcing layer 12 and a lower polymer cement mortar reinforcing layer 13 are arranged on the upper side and the lower side of the light thermal insulation and sound insulation layer 11, glass fiber mesh cloth for enhancing the overall mechanical property of the formwork-free composite thermal insulation and sound insulation board is arranged in the upper polymer cement mortar reinforcing layer 12 and the lower polymer cement mortar reinforcing layer 13, the glass fiber mesh cloth is alkali-resistant glass fiber mesh cloth and is used for improving the bending strength and the impact strength of the formwork-free composite thermal insulation and sound insulation board, and a pouring filling part 14 which extends inwards and can be filled with concrete is arranged on the upper polymer cement mortar reinforcing layer 12. The upper surface of the light heat-insulating sound-insulating layer 11 is provided with an upper polymer cement mortar reinforcing layer 12 with built-in glass fiber gridding cloth, the lower surface of the light heat-insulating sound-insulating layer 11 is provided with a lower polymer cement mortar reinforcing layer 13 with built-in glass fiber gridding cloth, the upper and lower polymer cement mortar reinforcing layers are tightly adhered with the light heat-insulating sound-insulating layer 11, the bending resistance, the plate surface impact resistance and the wear resistance of the formwork-free composite heat-insulating sound-insulating plate are greatly improved, and the formwork-free composite heat-insulating sound-insulating plate can be used as a template for casting concrete floors. The formwork-free composite heat-insulating sound-insulating board is used as a permanent formwork in construction of an assembled floor slab, after the laying and installation are completed, the reinforced steel bars are bound on the formwork-free composite heat-insulating sound-insulating board, the water and electricity pipelines are reserved, then the floor slab concrete is poured, the floor slab concrete is formed at one time, the quality problem that shrinkage cracking easily occurs between an assembled concrete composite slab and the assembled concrete composite slab in the using process is avoided, and the formwork-free composite heat-insulating sound-insulating board is convenient to cut and process. After the floor slab is poured, the thickness of the floor slab concrete is consistent with that of the traditional building floor slab, and is far smaller than that of an assembled concrete laminated slab, so that a large amount of manufacturing cost is saved. And the upper polymer cement mortar reinforcing layer 12 is provided with the inward pouring filling part 14, so that when the formwork-free composite heat and sound insulation board is used for manufacturing a concrete floor slab, concrete can be poured into the pouring filling part 14, so that the reinforced concrete layer of the floor slab and the formwork-free composite heat and sound insulation board are connected together through effective mechanical engagement except bonding of contact surfaces, the connection capability of the reinforced concrete layer and the formwork-free composite heat and sound insulation board is greatly improved, the safety in use is improved, and the composite floor slab formed by the reinforced concrete layer and the formwork-free composite heat and sound insulation board has excellent heat and sound insulation performance and simple structure, and effectively reduces the engineering cost.
As shown in fig. 2, the bottom of the pouring filling part 14 is provided with a drainage channel 15 which penetrates through the light heat-insulating sound-insulating layer 11 and the lower polymer cement mortar reinforcing layer 13 downwards. The bottom of the pouring filling part 14 is provided with a penetrating drainage channel 15, so that water sprayed on the formwork-free composite heat-insulating and sound-insulating plate can be drained from the drainage channel 15 in the floor manufacturing and construction process, the surface of the formwork-free composite heat-insulating and sound-insulating plate pouring filling part is kept moist but not water is accumulated, and the concrete and the formwork-free composite heat-insulating and sound-insulating plate are better combined, so that the engineering quality is improved. The pouring filling part 14 can be arranged on the upper polymer cement mortar reinforcing layer 12 only, and can also extend into the light heat-insulating sound-insulating layer 11.
As shown in fig. 1 and 4, the pouring and filling part 14 is a bar-shaped groove formed on the polymer cement mortar reinforcing layer 12 at the upper side, the longitudinal section of the bar-shaped groove is in a dovetail shape, the dovetail opening is narrow and the bottom is wide, and the drainage channel 15 is arranged at the bottom of the dovetail. After the concrete is poured into the strip-shaped groove, the reinforced concrete layer 2 and the formwork-free composite heat-insulation sound-insulation board 1 can be firmly connected.
As shown in fig. 3 and 4, the pouring and filling part 14 may be a circular or polygonal counterbore formed on the upper polymer cement mortar reinforcing layer 12, and the circular or polygonal counterbore has a small opening and a large bottom, so that the reinforced concrete layer 2 and the formwork-free composite heat insulation and sound insulation board 1 can be firmly connected after the concrete is poured into the circular or polygonal hole. Of course, the filling portion 14 may extend into the lower polymer cement mortar reinforcement layer 13.
The periphery of the light heat-insulating sound-insulating layer 11 is provided with a peripheral polymer cement mortar reinforcing layer. Not shown in the figure, the structural strength of the whole formwork-free composite heat and sound insulation board 1 is enhanced, and the light heat and sound insulation layer 11 is formed by bonding a plurality of light heat and sound insulation boards.
The light heat-insulating sound-insulating layer 11 is an extruded polystyrene foam plastic plate or a molded polystyrene foam plastic plate or a foam glass plate or a cement-based foam heat-insulating plate or a polyurethane foam plastic plate or a cement-based polyphenyl particle composite heat-insulating plate.
A building method of a heat-insulating and sound-insulating floor slab comprises the following steps:
A: the prefabricated formwork-free composite heat-insulating sound-insulating board 1 is prepared by processing the upper surface and the lower surface of a light heat-insulating sound-insulating layer 11 to form rough surfaces, brushing an interface agent, then brushing polymer cement mortar to obtain an upper polymer cement mortar reinforcing layer 12 and a lower polymer cement mortar reinforcing layer 13, processing to form rough surfaces, brushing the interface agent to increase the bonding force between the light heat-insulating sound-insulating layer 11 and the upper polymer cement mortar reinforcing layer 12 and the lower polymer cement mortar reinforcing layer 13, arranging alkali-resistant glass fiber glass mesh fabrics in the polymer cement mortar reinforcing layers 12 and 13, arranging an inwards extending pouring filling part 14 on the upper polymer cement mortar reinforcing layer 12, and arranging a drainage channel 15 which penetrates through the light heat-insulating sound-insulating layer 11 and the lower polymer cement mortar reinforcing layer 13 downwards at the bottom of the pouring filling part 14;
B: after the formwork support system 4 is erected, a plurality of formwork-free composite heat-insulating and sound-insulating boards 1 are paved and fixed on the formwork support system 4, the formwork support system 4 comprises a bracket support 41 and a formwork bracket 42, the upper side polymer cement mortar reinforcing layer 12 faces upwards, reinforcing steel bars are bound on the upper side polymer cement mortar reinforcing layer 12, embedded water and electricity pipelines are installed, water is sprayed on the upper side polymer cement mortar reinforcing layer 12 to moisten the upper side polymer cement mortar reinforcing layer, so that the combination degree of concrete to be poured and the upper side polymer cement mortar reinforcing layer 12 is enhanced, then concrete is poured, and part of concrete is filled into the pouring filling part 14 to form the reinforced concrete layer 2, so that the formwork-free composite heat-insulating board 1 is used as a formwork and is used as a part of a floor slab after pouring, the formwork paving process is reduced, and the construction cost is reduced.
C: and after the reinforced concrete layer 2 is solidified to reach the strength, removing the template supporting system 4, and carrying out subsequent decoration construction on the lower surface of the polymer cement mortar reinforcing layer 13 at the lower side of the formwork-free composite heat insulation and sound insulation board 1 and the upper surface of the reinforced concrete layer 2.
The construction method has simple procedures, the adopted formwork-free composite heat-insulating and sound-insulating plate has simple structure, low cost and good sound-insulating and heat-insulating effect, reduces construction procedures, uses the formwork-free composite heat-insulating and sound-insulating plate as a permanent formwork, does not need to additionally lay a formwork on the formwork support system 4 and detach the formwork, shortens the construction period and is suitable for popularization and application.
Claims (3)
1. A mould-free composite heat-insulating sound-insulating board is characterized in that: the lightweight heat-insulating sound-insulating plate comprises a lightweight heat-insulating sound-insulating layer (11), wherein an upper polymer cement mortar reinforcing layer (12) and a lower polymer cement mortar reinforcing layer (13) are arranged on the upper side and the lower side of the lightweight heat-insulating sound-insulating layer (11), glass fiber mesh cloth for enhancing the integral mechanical property of the formwork-free composite heat-insulating sound-insulating plate is arranged in the upper polymer cement mortar reinforcing layer (12) and the lower polymer cement mortar reinforcing layer (13), and a pouring filling part (14) which extends inwards and can be filled with concrete is arranged on the upper polymer cement mortar reinforcing layer (12);
the bottom of the pouring filling part (14) is provided with a drainage channel (15) which downwards penetrates through the light heat-insulating sound-insulating layer (11) and the lower polymer cement mortar reinforcing layer (13);
the pouring filling part (14) extends inwards into the light heat-insulating sound-insulating layer (11) or extends inwards and penetrates through the lower polymer cement mortar reinforcing layer (13) to form a through hole;
The upper polymer cement mortar reinforcing layer (12), the light heat-insulating sound-insulating layer (11) and the lower polymer cement mortar reinforcing layer (13) are provided with counter bores, and the pouring filling part (14) and the drainage channel (15) are formed by the counter bores; or the pouring filling part (14) is a strip-shaped groove formed in the polymer cement mortar reinforcing layer (12) at the upper side, the longitudinal section of the strip-shaped groove is in a dovetail groove shape, and a drainage channel (15) is formed at the bottom of the dovetail groove;
The opening of the pouring filling part (14) is small and the bottom is large;
the periphery of the light heat-insulating sound-insulating layer (11) is provided with a peripheral polymer cement mortar reinforcing layer, and the light heat-insulating sound-insulating layer (11) is formed by bonding a plurality of light heat-insulating sound-insulating plates;
the light heat-insulating sound-insulating layer (11) is an extruded polystyrene foam plastic plate or a molded polystyrene foam plastic plate or a foam glass plate or a cement-based foam heat-insulating plate or a polyurethane foam plastic plate or a cement-based polyphenyl particle composite heat-insulating plate;
the glass fiber mesh cloth is alkali-resistant glass fiber mesh cloth.
2. A building method of a heat-insulating and sound-insulating floor slab is characterized by comprising the following steps: the method comprises the following steps:
A: the method comprises the steps of prefabricating a composite heat-insulating sound-insulating board (1), coating polymer cement mortar on two sides of a light heat-insulating sound-insulating layer (11) to obtain an upper polymer cement mortar reinforcing layer (12) and a lower polymer cement mortar reinforcing layer (13), wherein glass fiber grid cloth for reinforcing the overall mechanical property of the composite heat-insulating sound-insulating board is arranged in the upper polymer cement mortar reinforcing layer (12) and the lower polymer cement mortar reinforcing layer (13), an inwards extending pouring filling part (14) is arranged on the upper polymer cement mortar reinforcing layer (12), and a drainage channel (15) which downwards penetrates through the light heat-insulating sound-insulating layer (11) and the lower polymer cement mortar reinforcing layer (13) is arranged at the bottom of the pouring filling part (14);
B: after the formwork support system (4) is erected, a plurality of composite heat-insulating sound-insulating plates (1) are paved and fixed on the formwork support system (4), the upper polymer cement mortar reinforcing layer (12) faces upwards, then steel bars are bound on the upper polymer cement mortar reinforcing layer (12) and embedded water and electricity pipelines are installed, concrete is poured, and part of concrete is filled into the pouring filling part (14) to form a reinforced concrete layer (2);
c: and after the reinforced concrete layer (2) is solidified to reach the strength, removing the template supporting system (4), and carrying out subsequent decoration construction on the lower surface of the lower polymer cement mortar reinforcing layer (13) and the upper surface of the reinforced concrete layer (2).
3. The method for constructing the heat-insulating and sound-insulating floor slab according to claim 2, wherein: in the step A, before polymer cement mortar is coated on the upper side and the lower side of the light heat-insulating sound-insulating layer (11), rough surfaces are formed on the upper surface and the lower surface of the light heat-insulating sound-insulating layer (11) and an interface agent is coated, and before concrete is filled in the step B, water is sprayed on the upper polymer cement mortar reinforcing layer (12) to moisten the upper polymer cement mortar reinforcing layer.
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| CN111519797A (en) * | 2020-05-21 | 2020-08-11 | 中山市诚盛建材开发有限公司 | Heat-preservation, heat-insulation and waterproof composite wallboard building structure and building method thereof |
| CN111519811A (en) * | 2020-05-26 | 2020-08-11 | 中山市诚盛建材开发有限公司 | Heat-preservation, heat-insulation and waterproof floor structure and construction method thereof |
| CN113513151A (en) * | 2021-06-29 | 2021-10-19 | 李新华 | Floor slab framework, floor slab and manufacturing method thereof |
| CN114562062A (en) * | 2022-04-11 | 2022-05-31 | 元氏县鸿发节能保温建材有限公司 | Composite heat-insulation space composite truss floor and construction method thereof |
| CN114953162B (en) * | 2022-06-14 | 2024-04-26 | 四川省建筑设计研究院有限公司 | Prefabrication method of heat-preservation and sound-insulation integrated assembled composite floor slab |
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| CN202559569U (en) * | 2012-05-09 | 2012-11-28 | 宝钢建筑系统集成有限公司 | Assembled monolithic self-insulation hidden dense rib light superposed floor slab |
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