CN113175180A - Gypsum-based composite sound insulation terrace and construction method thereof - Google Patents
Gypsum-based composite sound insulation terrace and construction method thereof Download PDFInfo
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- CN113175180A CN113175180A CN202110457868.4A CN202110457868A CN113175180A CN 113175180 A CN113175180 A CN 113175180A CN 202110457868 A CN202110457868 A CN 202110457868A CN 113175180 A CN113175180 A CN 113175180A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
- E04F15/203—Separately-laid layers for sound insulation
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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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
- 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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- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
- E04F2290/041—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise
- E04F2290/043—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against noise with a bottom layer for sound insulation
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Abstract
The invention provides a gypsum-based composite sound insulation terrace and a construction method thereof, wherein the terrace is composed of a gypsum-based self-leveling mortar leveling layer, a gypsum-based foaming slurry filling layer and a sound insulation pad or a heat insulation board sound insulation layer from top to bottom, the thickness of the gypsum-based self-leveling mortar leveling layer is 20-30mm, the thickness of the gypsum-based foaming slurry filling layer is 20-50mm, and the thickness of the sound insulation pad or the heat insulation board sound insulation layer is 2-20 mm. The leveling layer and the filling layer of the sound insulation terrace are both made of gypsum-based materials, and have the advantages of coordinated shrinkage, stable bonding, leveling and crack resistance, capability of being pumped and cast in place mechanically and the like.
Description
Technical Field
The invention relates to the technical field of green energy-saving buildings, in particular to a gypsum-based composite sound insulation terrace and a construction method thereof.
Background
The sound insulation terrace system is arranged between the floor slab and the ground decoration layer, and has strict requirements on green energy-saving buildings. The existing sound insulation terrace technology mainly comprises two types of sound insulation pads or heat insulation boards and fine aggregate concrete combination, sound insulation pads or heat insulation boards and gypsum-based self-leveling combination, and the existing outstanding problems are as follows:
1. sound insulation pad or heated board and fine aggregate concrete combination terrace, because sound insulation layer compressive strength is low and all do not bond with floor and fine aggregate concrete, fine aggregate concrete shrinkage factor is big, quality common faults such as screed-coat hollowing, fracture and roughness difference very easily appear. In addition, the construction efficiency is extremely low by adopting a manual paving method.
2. The sound insulation pad or the heat insulation board and the gypsum-based self-leveling mortar combined terrace has the advantages that the heat insulation layer is low in compressive strength, poor in adhesive force with the floor and the gypsum-based self-leveling, poor in supporting force, large in shrinkage difference of two layers of materials, capable of stabilizing the gypsum-based self-leveling only by thickening to be more than 30mm, high in manufacturing cost and difficult to widely accept.
In conclusion, the existing sound insulation terrace technology has the defects of cracking of a leveling layer, hollowing among layers, low construction efficiency, high construction cost and the like, and the implementation of the national green building policy on the ground standard of the sound insulation building is severely restricted.
Disclosure of Invention
The invention provides a gypsum-based composite sound insulation terrace and a construction method thereof, aiming at solving the technical problems of hollowing cracking, poor flatness, low construction efficiency, high engineering cost and the like of a sound insulation terrace system, enabling each layer of the sound insulation terrace system to be firmly bonded, enabling the system to be stable and crack-resistant, realizing high-precision flatness, realizing high-efficiency construction, reducing the engineering cost and obviously improving the quality, the efficiency and the cost of the sound insulation terrace system.
The technical scheme is as follows:
the utility model provides a gypsum base combined type sound insulation terrace, this terrace from the top down comprises gypsum base self-leveling mortar screed-coat, gypsum base foaming slurry filling layer, sound insulation pad or heated board sound insulation layer, and the thickness of gypsum base self-leveling mortar screed-coat is 20-30mm, and the thickness of gypsum base foaming slurry filling layer is 20-50mm, and the thickness of sound insulation pad or heated board sound insulation layer is 2-20 mm.
Further, the gypsum-based self-leveling mortar leveling layer is formed by pouring gypsum-based self-leveling mortar, and the necessary additive mixture ratio of the gypsum-based self-leveling mortar based on 1000kg of building gypsum is as follows: 30-110 kg of cement, 1-5 kg of gypsum water reducing agent, 0.5-2.5 kg of gypsum defoaming agent, 0.4-2 kg of gypsum retarder and 350-750 kg of mixing water.
Preferably, the gypsum-based self-leveling mortar also comprises an admixture, wherein the admixture is one or more of fine sand, fly ash, micro silicon powder and heavy calcium powder, and the proportion of the total weight of the admixture to the building gypsum is not more than 1.5 times.
Further, the gypsum-based foaming slurry filling layer is formed by pouring gypsum-based foaming slurry, and the gypsum-based foaming slurry is poured according to the thickness of 1m3The mixing ratio of (A) to (B) is as follows: 400-850 kg of building gypsum, 0.2-1.8 kg of gypsum retarder, 0.4-2 kg of gypsum foaming agent and 250-600 kg of mixing water.
Furthermore, the sound insulation layer is an elastic sheet made of one or more of polyethylene, polypropylene and rubber by adopting a foaming process, or is a polystyrene extruded sheet or a polyurethane foam sheet.
A construction method of a gypsum-based composite sound insulation terrace comprises the following steps:
the method comprises the following steps: cleaning and washing the floor slab;
step two: hanging lines on the floor slab according to the designed elevation, or marking the height of each structural layer on the wall body;
step three: paving a sound insulation pad or a sound insulation layer of the heat insulation board on a floor slab, and sticking a joint by using an adhesive tape; or gypsum slurry is used for sticking the sound insulation pad or the sound insulation layer of the heat insulation board on the floor slab;
step four: preparing gypsum-based foaming slurry according to a design mixing proportion, pouring the gypsum-based foaming slurry on the sound insulation layer, and paving and trowelling according to the elevation to form a gypsum-based foaming slurry filling layer;
step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and leveling according to the elevation to form a gypsum-based self-leveling mortar leveling layer, and sealing the construction area until the leveling layer is hardened to reach the human-oriented strength and then opening the construction area.
The advantages and effects are as follows:
the sound insulation terrace of the invention adopts the sound insulation pad or the heat insulation board as the sound insulation layer to realize the floating construction structure, and can meet the sound insulation requirement of the floor. The gypsum-based foaming slurry is used as a filling layer, so that the transition of compressive strength from weak to strong can be realized, the effects of supplementing sound insulation and heat preservation and adjusting ground elevation can be exerted, and the manufacturing cost is obviously reduced by thinning the gypsum-based self-leveling mortar. The gypsum-based self-leveling mortar is used as the leveling layer, so that stable crack resistance of the leveling layer can be realized, and high-precision leveling can be realized. The filling layer and the leveling layer are made of gypsum-based materials, are effectively bonded with each other, have consistent shrinkage rate and are coordinated in time, and therefore interlayer hollowing and surface layer cracking of the sound insulation terrace can be avoided; the two layers can adopt a mechanical pumping cast-in-place process, and can be hardened and planted within five hours, so that continuous construction is realized. The invention realizes the technical scheme of optimization combination innovation of 'same material property, progressive strength and complementary function', and can obviously improve the quality, efficiency and cost of the sound insulation terrace.
Drawings
FIG. 1 is a cross-sectional view of a gypsum-based composite sound insulation terrace;
description of reference numerals: 1-gypsum-based self-leveling mortar leveling layer, 2-gypsum-based foaming slurry filling layer, 3-sound insulation pad or heat insulation board sound insulation layer, 4-floor and 5-wall.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in figure 1, the gypsum-based composite sound insulation terrace comprises a gypsum-based self-leveling mortar leveling layer 1, a gypsum-based foaming slurry filling layer 2 and a sound insulation pad or heat insulation board sound insulation layer 3 from top to bottom, wherein the thickness of the gypsum-based self-leveling mortar leveling layer 1 is 20-30mm, the thickness of the gypsum-based foaming slurry filling layer 2 is 20-50mm, and the thickness of the sound insulation pad or heat insulation board sound insulation layer 3 is 2-20 mm.
The invention has the following significant improvement: the gypsum-based self-leveling mortar leveling layer 1 not only plays the role of a leveling layer with high strength and no cracking, but also can realize high-precision leveling; the gypsum-based foaming slurry filling layer 2 can realize the transition of the compressive strength from weak to strong, can also play a better role in supplementing sound insulation and heat preservation and adjusting the ground elevation, and obviously reduces the manufacturing cost by thinning the gypsum-based self-leveling mortar; the gypsum-based self-leveling mortar leveling layer 1 and the gypsum-based foaming slurry filling layer 2 are both gypsum-based materials, are effectively bonded with each other, have consistent shrinkage rate and are coordinated in time, and can avoid hollowing between layers and cracking of a surface layer of the sound insulation terrace; the sound insulation pad or the sound insulation layer of the heat insulation plate at the lowest part can meet the sound insulation requirement and contribute to partial heat insulation performance.
As shown in fig. 1, in the gypsum-based composite sound insulation terrace of the present invention, the gypsum-based self-leveling mortar leveling layer 1 is formed by pouring gypsum-based self-leveling mortar, and the necessary additive mix proportion of the gypsum-based self-leveling mortar based on 1000kg of building gypsum is: 30-110 kg of cement, 1-5 kg of gypsum water reducing agent, 0.5-2.5 kg of gypsum defoaming agent, 0.4-2 kg of gypsum retarder and 350-750 kg of mixing water. The gypsum-based self-leveling mortar also has an optional admixture which is one or more of fine sand, fly ash, micro silicon powder and heavy calcium powder, and the proportion of the total weight of the admixture to the building gypsum is not more than 1.5 times.
The high strength of the gypsum-based self-leveling mortar can ensure the durability, the low shrinkage rate can ensure that the leveling layer does not crack, the self-leveling performance ensures the high-precision flatness of the floor system, and certain contribution can be made to the heat preservation and sound insulation performance of the floor system.
As shown in figure 1, in the gypsum-based composite sound insulation terrace of the invention, the gypsum-based foaming slurry filling layer 2 is formed by pouring gypsum-based foaming slurry which is 1m in thickness3The mixing ratio of (A) to (B) is as follows: 400-850 kg of building gypsum, 0.2-1.8 kg of gypsum retarder, 0.4-2 kg of gypsum foaming agent and 250-600 kg of mixing water.
The gypsum-based foaming slurry is of a porous structure, is low in density, has certain heat preservation and sound insulation performance, is tightly bonded with a gypsum-based self-leveling mortar leveling layer, has consistent shrinkage rate and coordinated shrinkage time, can avoid the problem of hollowing, has compressive strength ten times that of a sound insulation pad or a heat insulation board, forms strength progressive transition, provides powerful support for the leveling layer, and provides favorable conditions for thinning the leveling layer.
As shown in fig. 1, in the gypsum-based composite sound insulation terrace of the present invention, the sound insulation pad or the heat insulation board sound insulation layer 3 is a sound insulation pad sound insulation layer or a heat insulation board sound insulation layer, and the sound insulation pad sound insulation layer is an elastic sheet made of one or more of polyethylene, polypropylene and rubber by a foaming process; the sound insulation layer of the heat insulation plate is a polystyrene extruded sheet or a polyurethane foam sheet.
As shown in fig. 1, the construction method of the gypsum-based composite sound insulation terrace of the invention comprises the following specific steps:
the method comprises the following steps: the floor 4 is cleaned and flushed clean.
Step two: and (3) hanging lines on the floor 4 according to the designed elevation, or marking the height of each structural layer on the wall 5.
Step three: paving the sound insulation pad or the sound insulation layer 3 of the heat insulation board on the floor slab, and sticking a joint by using an adhesive tape; or gypsum slurry is used for sticking the sound insulation pad or the sound insulation layer 3 of the heat insulation board on the floor slab.
Step four: according to the design mixing proportion, the gypsum-based foaming slurry is prepared by a special stirrer, poured on the sound insulation layer, spread and leveled according to the elevation to form the gypsum-based foaming slurry filling layer 2.
Step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry by using a special stirrer according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and troweling the gypsum-based self-leveling mortar slurry according to the elevation to form a gypsum-based self-leveling mortar leveling layer 1, and closing the construction area until the leveling layer is hardened to reach the human-oriented strength, and opening the construction area.
The invention relates to a construction method of a composite heat-preservation sound-insulation floor system, which is improved significantly by the following steps: the construction of sound insulation layer and filling layer is carried out in step basically, and filling layer, screed-coat all adopt seamless whole technology of watering, especially all can realize that the sclerosis is gone up the people about five hours, carry out next procedure operation, make the drying shrinkage time of filling layer and screed-coat harmonious unanimous basically, can avoid shrink hollowing, fracture, can shorten the sound insulation terrace total project period to the time of a day again, improve the efficiency of construction by a wide margin.
In the embodiment, the desulfurized gypsum and the ordinary silicate 42.5 cement with the 2h compressive strength of more than 6Mpa are all commercially available materials, the gypsum water reducing agent, the gypsum retarder, the gypsum defoaming agent, the fine sand and the silica fume are all commercially available materials, the polyethylene foam board and the polystyrene extruded sheet are all commercially available materials, the gypsum foaming agent is provided by Shenyang gold armored building science and technology company, and the mixing water is tap water.
Example 1
The gypsum-based combined type heat preservation terrace of this embodiment comprises gypsum-based self-leveling mortar screed-coat, gypsum-based foaming slurry filling layer, sound insulation pad or heated board sound insulation layer from the top down, and the thickness of gypsum-based self-leveling mortar screed-coat is 20mm, and the thickness of gypsum-based foaming slurry filling layer is 25mm, and the thickness of sound insulation pad sound insulation layer is 5 mm.
The gypsum-based self-leveling mortar comprises the following raw materials in parts by weight based on 1000kg of building gypsum: 110kg of cement, 5kg of gypsum water reducing agent, 2.5kg of gypsum defoaming agent, 2kg of gypsum retarder and 350 kg of mixing water.
The gypsum-based foaming slurry is 1m3The mixing ratio of (A) to (B) is as follows: 850kg of building gypsum, 1.8kg of gypsum retarder, 0.4kg of gypsum foaming agent and 600kg of mixing water.
According to the gypsum-based composite sound insulation terrace, the sound insulation layer is the foamed polypropylene elastic sheet.
The construction method of the gypsum-based composite sound insulation terrace of the embodiment comprises the following specific steps:
the method comprises the following steps: the floor 4 is cleaned and flushed clean.
Step two: and (3) hanging lines on the floor 4 according to the designed elevation, or marking the height of each structural layer on the wall 5.
Step three: the foamed polypropylene elastic sheet was laid on the floor 4 and the joints were adhered with an adhesive tape.
Step four: according to the design mixing proportion, the gypsum-based foaming slurry is prepared by a special stirrer, poured on the sound insulation layer, spread and leveled according to the elevation to form the gypsum-based foaming slurry filling layer 2.
Step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry by using a special stirrer according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and troweling the gypsum-based self-leveling mortar slurry according to the elevation to form a gypsum-based self-leveling mortar leveling layer 1, and closing the construction area until the leveling layer is hardened to reach the human-oriented strength, and opening the construction area.
The gypsum-based composite heat-insulation terrace and the construction method thereof of the embodiment have the main technical indexes that: the gypsum-based self-leveling mortar has the final setting time of less than or equal to 5 hours, the absolute dry compressive strength of more than or equal to 24Mpa, the drying shrinkage of less than 0.05 percent and the thermal conductivity of less than or equal to 0.5W/(m.K); the gypsum-based foaming slurry has the advantages that the final setting time is less than or equal to 5 hours, the absolute dry density is 1020kg/m, the absolute dry compressive strength is more than or equal to 4MPa, the dry shrinkage is less than or equal to 0.05 percent, and the heat conductivity coefficient is less than or equal to 0.25W/(m.K); the total thickness of the sound insulation terrace is 50mm, the weighting standardization impact sound pressure level is 64dB, and the heat transfer coefficient is less than or equal to 2.0W/m2K, the construction lead time is 1-2 days. The filling layer and the leveling layer are stably and tightly bonded, the flatness of the leveling layer is less than or equal to 3mm, and the phenomenon of hollowing and cracking is avoided.
Example 2
The gypsum-based combined type heat preservation terrace of this embodiment comprises gypsum-based self-leveling mortar screed-layer 1, gypsum-based foaming slurry filling layer 2, sound insulation pad or heated board sound insulation layer 3 from the top down, and gypsum-based self-leveling mortar screed-layer 1's thickness is 30mm, and gypsum-based foaming slurry filling layer 2's thickness is 50mm, and the thickness of sound insulation pad sound insulation layer is 2 mm.
The gypsum-based self-leveling mortar comprises the following necessary additives in parts by weight based on 1000kg of building gypsum: 90kg of cement, 4kg of gypsum water reducing agent, 2kg of gypsum defoaming agent, 1.5kg of gypsum retarder and 450kg of mixing water.
The gypsum-based self-leveling mortar also comprises 600kg of optional admixture fine sand and 80kg of fly ash.
The gypsum-based foaming slurry is 1m3The mixing ratio of (A) to (B) is as follows: 700kg of building gypsum, 1.2kg of gypsum retarder, 1.2kg of gypsum foaming agent and 500kg of mixing water.
According to the gypsum-based composite sound insulation terrace, the sound insulation layer is the foamed polyethylene elastic sheet.
The construction method of the gypsum-based composite sound insulation terrace of the embodiment comprises the following specific steps:
the method comprises the following steps: the floor 4 is cleaned and flushed clean.
Step two: and (3) hanging lines on the floor 4 according to the designed elevation, or marking the height of each structural layer on the wall 5.
Step three: the foamed polyethylene elastic sheet is adhered to the floor 4 by gypsum slurry.
Step four: according to the design mixing proportion, the gypsum-based foaming slurry is prepared by a special stirrer, poured on the sound insulation layer, spread and leveled according to the elevation to form the gypsum-based foaming slurry filling layer 2.
Step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry by using a special stirrer according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and troweling the gypsum-based self-leveling mortar slurry according to the elevation to form a gypsum-based self-leveling mortar leveling layer 1, and closing the construction area until the leveling layer is hardened to reach the human-oriented strength, and opening the construction area.
The gypsum-based composite heat-insulation terrace and the construction method thereof of the embodiment have the main technical indexes that: the gypsum-based self-leveling mortar has the final setting time of less than or equal to 4 hours, the absolute dry compressive strength of more than or equal to 22Mpa, the drying shrinkage of less than 0.05 percent and the thermal conductivity of less than or equal to 0.7W/(m.K); the gypsum-based foaming slurry has the advantages that the final setting time is less than or equal to 4 hours, the absolute dry density is 840kg/m, the absolute dry compressive strength is more than or equal to 3Mpa, the dry shrinkage is less than or equal to 0.05 percent, and the heat conductivity coefficient is less than or equal to 0.2W/(m.K); the total thickness of the sound insulation terrace is 82mm, the weighting standardization impact sound pressure level is 69dB, and the heat transfer coefficient is less than or equal to 1.9W/m2K, the construction lead time is 1-2 days. The filling layer and the leveling layer are stably and tightly bonded, the flatness of the leveling layer is less than or equal to 3mm, and the phenomenon of hollowing and cracking is avoided.
Example 3
The gypsum-based combined type heat preservation terrace of this embodiment comprises gypsum-based self-leveling mortar screed-layer 1, gypsum-based foaming slurry filling layer 2, sound insulation pad or heated board sound insulation layer 3 from the top down, and gypsum-based self-leveling mortar screed-layer 1's thickness is 20mm, and gypsum-based foaming slurry filling layer 2's thickness is 20mm, and the thickness of heated board sound insulation layer is 20 mm.
The gypsum-based self-leveling mortar comprises the following necessary additives in parts by weight based on 1000kg of building gypsum: 60kg of cement, 2kg of gypsum water reducing agent, 1kg of gypsum defoaming agent, 1kg of gypsum retarder and 600kg of mixing water.
The gypsum-based self-leveling mortar also comprises 1000kg of optional admixture fine sand and 70kg of micro silicon powder.
The gypsum-based foaming slurry is 1m3The mixing ratio of (A) to (B) is as follows: 550kg of building gypsum, 0.6kg of gypsum retarder, 1.6kg of gypsum foaming agent and 400kg of mixing water.
According to the gypsum-based composite sound insulation terrace, the sound insulation layer is a polystyrene extruded sheet.
The construction method of the gypsum-based composite sound insulation terrace of the embodiment comprises the following specific steps:
the method comprises the following steps: the floor 4 is cleaned and flushed clean.
Step two: and (3) hanging lines on the floor 4 according to the designed elevation, or marking the height of each structural layer on the wall 5.
Step three: the polystyrene extruded sheet is laid on the floor slab 4 and the joints are glued with adhesive tape.
Step four: according to the design mixing proportion, the gypsum-based foaming slurry is prepared by a special stirrer, poured on the sound insulation layer, spread and leveled according to the elevation to form the gypsum-based foaming slurry filling layer 2.
Step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry by using a special stirrer according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and troweling the gypsum-based self-leveling mortar slurry according to the elevation to form a gypsum-based self-leveling mortar leveling layer 1, and closing the construction area until the leveling layer is hardened to reach the human-oriented strength, and opening the construction area.
The gypsum-based composite heat-insulation terrace and the construction method thereof of the embodiment have the main technical indexes that: the gypsum-based self-leveling mortar has the final setting time of less than or equal to 2 hours, the absolute dry compressive strength of more than or equal to 20Mpa, the drying shrinkage of less than 0.05 percent and the thermal conductivity of less than or equal to 0.75W/(m.K); the gypsum-based foaming slurry has the final setting time of less than or equal to 2 hours, the absolute dry density of 660kg/m for high yield, the absolute dry compressive strength of more than or equal to 1.5Mpa, the drying shrinkage of less than or equal to 0.05 percent and the heat conductivity of less than or equal to 0.15W/(m.K); the total thickness of the sound insulation terrace is 60mm, and the weight is calculated to standardize the impactSound pressure level 64dB, heat transfer coefficient less than or equal to 1.1W/m2K, the construction lead time is 1-2 days. The filling layer and the leveling layer are stably and tightly bonded, the flatness of the leveling layer is less than or equal to 3mm, and the phenomenon of hollowing and cracking is avoided.
Example 4
The gypsum-based combined type heat preservation terrace of this embodiment comprises gypsum-based self-leveling mortar screed-layer 1, gypsum-based foaming slurry filling layer 2, sound insulation pad or heated board sound insulation layer 3 from the top down, and gypsum-based self-leveling mortar screed-layer 1's thickness is 20mm, and gypsum-based foaming slurry filling layer 2's thickness is 40mm, and the thickness of heated board sound insulation layer is 10 mm.
The gypsum-based self-leveling mortar comprises the following necessary additives in parts by weight based on 1000kg of building gypsum: 30kg of cement, 1kg of gypsum water reducing agent, 0.5kg of gypsum defoaming agent, 0.4kg of gypsum retarder and 750kg of mixing water.
The gypsum-based self-leveling mortar also comprises 1500kg of optional admixture fine sand.
The gypsum-based foaming slurry is 1m3The mixing ratio of (A) to (B) is as follows: 400kg of building gypsum, 0.2kg of gypsum retarder, 2kg of gypsum foaming agent and 250kg of mixing water.
According to the gypsum-based composite sound insulation terrace, the sound insulation layer is a polystyrene extruded sheet.
The construction method of the gypsum-based composite sound insulation terrace of the embodiment comprises the following specific steps:
the method comprises the following steps: the floor 4 is cleaned and flushed clean.
Step two: and (3) hanging lines on the floor 4 according to the designed elevation, or marking the height of each structural layer on the wall 5.
Step three: the polystyrene extruded sheet is adhered to the floor 4 by gypsum slurry.
Step four: according to the design mixing proportion, the gypsum-based foaming slurry is prepared by a special stirrer, poured on the sound insulation layer, spread and leveled according to the elevation to form the gypsum-based foaming slurry filling layer 2.
Step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry by using a special stirrer according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and troweling the gypsum-based self-leveling mortar slurry according to the elevation to form a gypsum-based self-leveling mortar leveling layer 1, and closing the construction area until the leveling layer is hardened to reach the human-oriented strength, and opening the construction area.
The gypsum-based composite heat-insulation terrace and the construction method thereof of the embodiment have the main technical indexes that: the gypsum-based self-leveling mortar has the final setting time of less than or equal to 1 hour, the absolute dry compressive strength of more than or equal to 18Mpa, the drying shrinkage rate of less than 0.05 percent and the thermal conductivity coefficient of less than or equal to 0.8W/(m.K); the gypsum-based foaming slurry has the final setting time of less than or equal to 1 hour, the absolute dry density of 480kg/m for high yield, the absolute dry compressive strength of more than or equal to 1MPa, the dry shrinkage of less than or equal to 0.05 percent and the heat conductivity coefficient of less than or equal to 0.12W/(m.K); the total thickness of the sound insulation terrace is 70mm, the weighting standardization impact sound pressure level is 69dB, and the heat transfer coefficient is less than or equal to 1.2W/m2K, the construction lead time is 1-2 days. The filling layer and the leveling layer are stably and tightly bonded, the flatness of the leveling layer is less than or equal to 3mm, and the phenomenon of hollowing and cracking is avoided.
Of course, the foregoing is only a preferred embodiment of the invention. It should be noted that, for a person skilled in the art, several modifications and refinements can be made without departing from the basic principle of the invention, and these modifications and refinements are also considered to be within the protective scope of the invention.
Claims (6)
1. The utility model provides a gypsum base combined type sound insulation terrace which characterized in that: the floor comprises a gypsum-based self-leveling mortar leveling layer (1), a gypsum-based foaming slurry filling layer (2) and a sound insulation pad or heat insulation board sound insulation layer (3) from top to bottom, wherein the thickness of the gypsum-based self-leveling mortar leveling layer (1) is 20-30mm, the thickness of the gypsum-based foaming slurry filling layer (2) is 20-50mm, and the thickness of the sound insulation pad or heat insulation board sound insulation layer (3) is 2-20 mm.
2. The gypsum-based composite sound insulation terrace of claim 1, characterized in that: the gypsum-based self-leveling mortar leveling layer (1) is formed by pouring gypsum-based self-leveling mortar, and the gypsum-based self-leveling mortar takes 1000kg of building gypsum as a reference, and comprises the following additives in parts by weight: 30-110 kg of cement, 1-5 kg of gypsum water reducing agent, 0.5-2.5 kg of gypsum defoaming agent, 0.4-2 kg of gypsum retarder and 350-750 kg of mixing water.
3. The gypsum-based composite sound insulation terrace of claim 2, characterized in that: the gypsum-based self-leveling mortar also comprises an admixture which is one or more of fine sand, fly ash, micro silicon powder and heavy calcium carbonate powder, and the proportion of the total weight of the admixture to the building gypsum is not more than 1.5 times.
4. The composite sound insulation terrace according to claim 1, characterized in that: the gypsum-based foaming slurry filling layer (2) is formed by pouring gypsum-based foaming slurry, and the gypsum-based foaming slurry is poured according to the thickness of 1m3The mixing ratio of (A) to (B) is as follows: 400-850 kg of building gypsum, 0.2-1.8 kg of gypsum retarder, 0.4-2 kg of gypsum foaming agent and 250-600 kg of mixing water.
5. The composite sound insulation terrace according to claim 1, characterized in that: the sound insulation layer is an elastic sheet made of one or more of polyethylene, polypropylene and rubber by adopting a foaming process, or is a polystyrene extruded sheet or a polyurethane foam sheet.
6. The construction method of the gypsum-based composite sound insulation terrace as claimed in claim 1, characterized in that: the construction method comprises the following steps:
the method comprises the following steps: sweeping and washing the floor slab (4) clean;
step two: hanging lines on the floor (4) according to the designed elevation, or marking the height of each structural layer on the wall (5);
step three: paving the sound insulation pad or the sound insulation layer (3) of the heat insulation board on the floor slab, and sticking a joint by using an adhesive tape; or gypsum slurry is used for sticking the sound insulation pad or the sound insulation layer (3) of the heat insulation board on the floor slab;
step four: preparing gypsum-based foaming slurry by adopting a forced mixer according to a designed mixing proportion, pouring the gypsum-based foaming slurry on the sound insulation layer, and spreading and troweling the gypsum-based foaming slurry according to the elevation to form a gypsum-based foaming slurry filling layer (2);
step five: after the filling layer is hardened to reach the human-oriented strength, preparing gypsum-based self-leveling mortar slurry by adopting a forced mixer according to the design mixing ratio, pouring the gypsum-based self-leveling mortar slurry onto the filling layer, paving and troweling the gypsum-based self-leveling mortar slurry according to the elevation to form the gypsum-based self-leveling mortar leveling layer (1), and closing the construction area until the leveling layer is hardened to reach the human-oriented strength, and opening the construction area.
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