CN-116065788-B - Gypsum-based sound insulation and heat preservation floor system with geothermal function and construction method thereof

CN116065788BCN 116065788 BCN116065788 BCN 116065788BCN-116065788-B

Abstract

A gypsum-based sound insulation and heat preservation floor system with a geothermal function and a construction method thereof belong to the technical field of building materials. The floor slab system comprises a structural layer, a sound insulation and heat preservation layer, a heat insulation layer, a heating layer and a leveling layer, wherein the structural layer, the sound insulation and heat preservation layer, the heat insulation layer and the heating layer are sequentially arranged from bottom to top, the heat insulation and heat preservation layer is made of foamed gypsum-based composite materials, the heat insulation layer is made of moisture-proof and mildew-proof gypsum self-leveling mortar, and the leveling layer is made of gypsum-based homogeneous materials with micro-expansion effects, so that a foundation is provided for firm bonding of the upper layer and the lower layer. On the basis, the configuration of each component in the gypsum-based composite material in the sound insulation and heat preservation layer, the configuration of each component in the heat insulation material in the heat insulation layer and the configuration of each component in the moistureproof and mildewproof gypsum self-leveling mortar in the leveling layer ensure that the sound insulation and heat preservation layer, the heat insulation layer and the leveling layer are firmly bonded and do not generate displacement. Under the formula system of the invention, the floor system is not cracked by utilizing the micro-expansion effect of gypsum, and the problem of hollowing and cracking of the existing floor is solved.

Inventors

MA PENGFEI
GAO YUXIN
YANG WEN
CHENG BAOJUN
WU HAONAN
WANG JUN
SHI BOYUAN
LI XI

Assignees

中建西部建设建材科学研究院有限公司
中建西部建设股份有限公司

Dates

Publication Date: 20260508
Application Date: 20221221

Claims (9)

1. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function is characterized by comprising a structural layer, a sound-insulation heat-preservation layer, a heat-insulation layer, a heating layer and a leveling layer which are sequentially arranged from bottom to top, wherein the sound-insulation heat-preservation layer is made of a foaming gypsum-based composite material, the heat-insulation layer is made of a heat-insulation material, and the leveling layer is made of moistureproof and mildewproof gypsum self-leveling mortar; The foaming gypsum-based composite material comprises, by weight, 60-85 parts of beta-type building gypsum or alpha-type high-strength gypsum, 0.06-0.12 part of a retarding water reducer, 30-50 parts of water, 3 parts or less of a waterproofing agent, 1-3 parts of a composite foaming agent, 5-15 parts of lightweight aggregate, and 0.1-0.5 part of a foam stabilizer, 8-10 parts of a physical foaming agent and 0.1-0.3 part of sodium sulfate; The heat insulation material comprises, by weight, 30-50 parts of gypsum powder, 10-20 parts of hollow glass microspheres, 3-5 parts of a retarding water reducer, 30-40 parts of latex, 1-5 parts of titanium dioxide and 5-8 parts of a heat insulation material, wherein the solid content of the latex is more than or equal to 35%; The moistureproof and mildew-proof gypsum self-leveling mortar comprises, by weight, 100-120 parts of phosphogypsum or desulfurized gypsum, 35-50 parts of water, 0.26-1.12 parts of a retarding water reducer, 0.2-0.8 part of a waterproofing agent and 0.2-0.5 part of a mildew inhibitor.
2. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function is characterized by comprising the following components, by weight, 90-100 parts of a polycarboxylic acid mother solution or a melamine mother solution, 9-20 parts of borax, 0.2-1.0 part of a retarder, 0-1.5 parts of cellulose ether, 0.1-0.2 part of a suspension stabilizer, 0.1-1 part of a defoaming agent and 90-100 parts of water; The waterproof agent comprises, by weight, 1.5-2.8 parts of sodium alkyl silicate, 2.0-3.9 parts of stearic acid, 15.8-24.2 parts of alum, 11.2-22.4 parts of titanium dioxide, 75.0-100.0 parts of cement, 150.0-200.0 parts of mineral powder and 0.5-1.0 parts of hydroxyl-terminated modified hyperbranched polymer; the mildew preventive comprises, by weight, 3-8 parts of an inorganic antibacterial component, 3-8 parts of chitosan, 3-7 parts of sodium methyl silicate, 4-14 parts of silicone-acrylic emulsion, 0.2-2 parts of a pH regulator and 0.1-1 part of sodium dodecyl sulfate, wherein the inorganic antibacterial component comprises 1-3 parts of nano silver, 1-3 parts of borax and 1-5 parts of nano titanium dioxide.
3. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function according to claim 1 or 2, wherein the lightweight aggregate is more than one of 80-100 mesh open-pore vitrified microbeads, 60-80 mesh open-pore perlite, 200-300 mesh aerogel and 10-40 mesh ceramic ceramsite.
4. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function according to claim 3, wherein the density of the open-pore vitrified micro bubbles is 80kg/m 3 ～120kg/m 3 , the density of the open-pore perlite is 60kg/m 3-80 kg/m3, and the density of the aerogel is 32kg/m 3 .
5. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function is characterized in that the lightweight aggregate comprises, by weight, 1-5 parts of 100-mesh open-pore vitrified microbeads and 5-10 parts of 30-mesh ceramic ceramsite, wherein the porosity of the ceramic ceramsite is more than or equal to 18%, the adsorption rate is more than or equal to 20%, the compressive strength is more than or equal to 1MPa, and the sphericity is more than or equal to 0.95.
6. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function according to claim 5, wherein the ceramic ceramsite is silver ion-containing graphene ceramic ceramsite with the particle size of 3-6 mm, and silver ions and graphene are uniformly distributed on the surface and inside of the ceramic ceramsite.
7. The gypsum-based sound insulation and heat preservation floor system with the geothermal function according to claim 1 or 2 is characterized by further comprising a floor decoration layer arranged above a leveling layer, wherein the floor in the floor decoration layer is a wood floor, stone, ceramic floor tile, mosaic tile or composite floor; When the floor is a stone floor tile, a ceramic floor tile or a mosaic tile, paving an adhesive layer under the floor, wherein the adhesive layer is polymer cement-based adhesive mortar, gypsum adhesive mortar or moistureproof and mildewproof gypsum adhesive mortar; When the floor is a wood floor or a composite floor, a moisture-proof layer is paved below the floor, wherein the moisture-proof layer is made of pearl cotton, ethylene-vinyl acetate copolymer, electronic crosslinked polyethylene foaming material, plasticizer-free polyvinyl chloride, aluminum film ground mat or paper ground mat, the thickness of the moisture-proof layer is 1.5 mm-2.5 mm, and the water absorption rate is less than or equal to 0.5%.
8. The gypsum-based sound-insulation heat-preservation floor system with the geothermal function, as set forth in claim 7, is characterized in that the bonding layer is moisture-proof and mildew-proof gypsum bonding mortar, the thickness of the bonding layer is 4 mm-6 mm, the mildew-proof grade is 0 grade, the drawing bonding strength is not less than 1.5MPa, and the fire-proof grade is A grade.
9. The construction method of the gypsum-based sound insulation and heat preservation floor system with the geothermal function according to any one of claims 1 to 8 is characterized by comprising the following steps: (1) Cleaning the structural layer and determining the thickness of each layer; (2) Sticking vertical sound insulation sheets at corners and the door sill; (3) Preparing a sound insulation and heat preservation layer on the cleaned structural layer by adopting a wet process or a dry process; when a wet process is adopted, uniformly pouring foamed gypsum-based composite material slurry which is uniformly stirred and has the fluidity of 120 mm+/-3 mm on a structural layer; When a dry process is adopted, paving a foaming gypsum-based composite material prefabricated part with a reserved pipe groove on a structural layer, wherein the depth of the pipe groove is 1/2-2/3 of the diameter of a hot water pipe, and the width of a splice joint of the prefabricated part is smaller than 0.5mm; (4) When a wet process is adopted, pouring the foamed gypsum-based composite material slurry for 0.5-1 h, pouring a heat insulation material on the foamed gypsum-based composite material slurry, preparing a heat insulation layer after pouring for 1-2 h, paving a pipeline to form a heating layer, and pouring moisture-proof and mildew-proof gypsum self-leveling mortar to form a leveling layer; When a dry process is adopted, a heat insulation material is coated on a sound insulation heat preservation layer, gaps among the prefabricated parts are blocked, the heat insulation material is constructed for 0.5-1 h to prepare a heat insulation layer, a hot water pipeline is embedded in the prefabricated parts to form a heating layer, and then damp-proof and mildew-proof gypsum self-leveling mortar is poured to form a leveling layer; (5) And the sound insulation and heat preservation layer, the heat insulation layer and the leveling layer are continuously constructed and naturally maintained, and after the leveling layer is poured and molded, the ground decoration layer is paved.

Description

Gypsum-based sound insulation and heat preservation floor system with geothermal function and construction method thereof Technical Field The invention relates to a gypsum-based sound insulation and heat preservation floor system with a geothermal function and a construction method thereof, and belongs to the technical field of building materials. Background In the twentieth century, energy consumption has grown faster and faster with the continuous development of world economy and the pursuit of people for high-level life. In terms of China, the building energy consumption accounts for about 1/3 of the total social energy consumption, wherein the maximum component is heating and air conditioning energy consumption, and accounts for more than 50% of the total building energy consumption, so that the building energy consumption is an important component of the energy consumption of China, and the problem of building energy consumption is a key problem of development of the building industry of China. At present, the floor heating system is widely applied due to the advantages of high comfort, long service life, increased indoor use area and the like, but the existing floor heating system has the defects of low heat transfer speed, low efficiency and easiness in downward dissipation of heat through a floor slab, so that energy waste is caused, and in addition, the heat insulation materials of the existing floor heating system are mostly made of organic materials, so that the durability is poor, the aging is easy, the later heat loss is greatly increased, and a large amount of energy consumption is caused. Along with the improvement of the living standard of people, higher requirements are put forward on the health performance, environmental performance and sound insulation performance of residence, wherein the indoor sound environment has the most close relationship with the living quality of people. The main factors affecting the indoor sound environment are the floor impact sound and the air sound transmission between the upper floor and the lower floor, and the air sound transmission of the same-floor division wall, and the floor impact sound has the largest influence because the attenuation of the propagation of the solid sound in the building structure is small. Most of the existing buildings adopt common concrete floors, the thickness of the common concrete floors is 120mm, the impact sound insulation performance is far higher than 75dB required by national standard GB50118-2005, and the requirements of floor impact sound insulation are not met. In addition, the heat transfer coefficient of the common concrete floor slab is almost 2 times that of national standard GB55015 and landmark DBJ51/143, the heat preservation performance is poor, the building energy-saving requirement is not met, the building quality is seriously influenced, and the social energy consumption is huge. At present, in order to solve the problems of the floor slab in sound insulation and heat preservation, three measures are generally adopted, namely, paving an elastic surface layer, adding a sound insulation suspended ceiling and arranging an organic floating floor slab. The elastic surface layer is paved to effectively reduce the impact sound of the floor slab, but the effect of isolating the air sound is not great. The additional arrangement of the sound insulation suspended ceiling can improve the sound insulation effect, but noise excited on the floor surface layer can be transmitted along house solids through the surrounding wall bodies, and the isolation of impact sound can not meet the requirements of general houses. The floating floor system provided with the original floor, the vibration damping pad and the reinforced concrete layer is widely applied in constructional engineering, in particular to an organic floating floor system which sequentially comprises a floor structural layer, a sound insulation vibration damping layer, a leveling floating layer and a ground decoration layer from bottom to top. But the important problem faced by the organic floating floor system is that the most widely applied sound insulation materials in the sound insulation and vibration reduction layer at present are organic sound insulation materials such as polyethylene foaming sound insulation materials, polyurethane sound insulation, polyester fiber heat insulation composite materials and the like. The organic sound insulation material has unstable chemical property, can emit toxic and harmful substances in use, has poor flame retardant property, is easy to cause environmental pollution, has high water vapor permeability coefficient, is easy to decompose, is easy to mold, and has weak weather resistance. In addition, the leveling floating layer in the organic floating floor system needs to be made of 40mm thick fine stone concrete and matched with reinforcing steel meshes, and needs to be subjected to moisture maintenance, the construction p