CN113716930B - Sand-free gypsum self-leveling material and application thereof in floor slab heat preservation and sound insulation system - Google Patents
Sand-free gypsum self-leveling material and application thereof in floor slab heat preservation and sound insulation system Download PDFInfo
- Publication number
- CN113716930B CN113716930B CN202111086776.6A CN202111086776A CN113716930B CN 113716930 B CN113716930 B CN 113716930B CN 202111086776 A CN202111086776 A CN 202111086776A CN 113716930 B CN113716930 B CN 113716930B
- Authority
- CN
- China
- Prior art keywords
- layer
- leveling
- gypsum
- self
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
-
- 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
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Floor Finish (AREA)
Abstract
The invention relates to a sand-free gypsum self-leveling material and application thereof in a floor slab heat preservation and sound insulation system, wherein the sand-free gypsum self-leveling material comprises a sand-free thin-layer gypsum self-leveling material and a sand-free thick-layer gypsum self-leveling material, and the sand-free thin-layer gypsum self-leveling material adopts a two-component material which comprises a liquid material component and a powder material component; the material is applied to a floor slab heat-insulation sound-insulation terrace system, the system comprises a base layer, a heat-insulation sound-insulation layer, a gridding cloth layer, a gypsum self-leveling bottom layer and a gypsum self-leveling surface layer from bottom to top, and the gypsum self-leveling surface layer is made of a sand-free thin-layer gypsum self-leveling material. The sand-free thin-layer gypsum self-leveling material disclosed by the invention improves the softening coefficient and the surface hardness by adopting two modes of chemical modification and physical modification, effectively improves the water resistance and the surface hardness of gypsum mortar, and improves the application range of the gypsum self-leveling mortar.
Description
Technical Field
The invention relates to the field of building materials, in particular to a sand-free gypsum self-leveling material and application thereof in a floor slab heat preservation and sound insulation system.
Background
Common household floor slab heat preservation and sound insulation technologies can be roughly divided into three categories: the building floor heat and sound insulation system comprises a heat and sound insulation plate building floor heat and sound insulation system, a vibration damping pad floor heat and sound insulation system and a light mortar (concrete) floor heat and sound insulation system. At present, the floating floor slab heat preservation and sound insulation system is mainly used in the market. The floating floor heat-insulating and sound-insulating system is characterized in that an elastic heat-insulating and sound-insulating pad is additionally arranged between a load-bearing reinforced concrete floor and an indoor floor surface layer, the periphery of a wall body is isolated from the wall body by adopting elastic sheets, and the indoor floor surface layer is isolated from the peripheral wall body and the load-bearing floor plate by the elastic sheets (the heat-insulating and sound-insulating pad), so that a 'floating structure' is formed. Some problems exist in the application process of the floating floor sound insulation and heat preservation system, and the floating floor sound insulation and heat preservation system mainly comprises the following points: (1) Because the heat-insulating sound-insulating cushion layer is positioned under the fine aggregate concrete protective layer and is pressed for a long time and shrinks with the fine aggregate concrete, and the like, the quality problems that the protective surface layer cracks or the protective layer is separated from the surrounding walls and the like easily occur in the using process of the system; (2) Leveling control difficulty of leveling of the fine aggregate concrete is high, secondary leveling is needed when later-stage fine finishing engineering is applied, the construction period is prolonged seriously, and construction difficulty is high; (3) The fine stone concrete has high density, thick construction thickness (especially floor heating engineering), large material consumption and larger floor slab bearing.
In order to solve the above problems, gypsum self-leveling mortar is mainly adopted to replace fine aggregate concrete to be applied to the floor slab heat preservation and sound insulation terrace system at present, and the floor slab heat preservation and sound insulation terrace system has the following advantages: (1) high flatness: the gypsum-based self-leveling mortar can be subjected to primary leveling construction without secondary leveling by adopting the gypsum-based self-leveling as a protective layer; (2) reducing the risk of cracking: the gypsum-based self-leveling mortar has good volume stability due to the micro-expansion characteristic of the cementing material gypsum; (3) the construction efficiency is high: the operation is convenient and efficient, the construction can be carried out by a pump, and the daily floor is 800-1000m 2 The construction speed is 5 to 10 times faster than that of the prior floor material; (4) saving material consumption: the dry density of the gypsum self-leveling mortar is only 1350-1600kg/m 3 About equal to the dry density of the fine stone concrete of 2400kg/m 3 Compared with the prior art, the material consumption can be reduced by more than 30%.
The gypsum self-leveling mortar is adopted to replace fine aggregate concrete and applied to the floor slab heat-insulation sound-insulation terrace system, and certain problems exist. Firstly, gypsum belongs to air-hardening cementing materials, is locally softened as long as the gypsum contacts water, and causes the strength of the gypsum to be obviously reduced, after the gypsum self-leveling construction is finished, wall surface finish coat construction, kitchen and toilet leveling and tile pasting construction, ground decoration construction and the like are required to be carried out, most of the constructions are wet operation construction, the strength of the gypsum self-leveling is difficult to ensure not to be influenced, a tile is one of main materials for indoor ground decoration, and because the gypsum self-leveling water resistance is poor, the tile pasting on the tile often has the quality defects of low bonding strength and easy hollowing, and the tile can only be replaced by wood floor finish usually, and the popularization and application range of the gypsum self-leveling mortar is also limited; secondly, the hardness of the gypsum building material is low, and after the gypsum self-leveling construction is finished, the long-time action of construction instruments, construction materials and constructors can cause the phenomena of pulverization, sand formation and the like on the gypsum self-leveling surface during cross operation construction; finally, the heat-insulating sound-insulating board is usually made of a light material, gypsum self-leveling mortar with good fluidity is poured on the surface of the heat-insulating sound-insulating board, phenomena such as floating and warping of the board often occur, the heat-insulating and sound-insulating performance is affected, and generally, during construction, gypsum self-leveling pouring is carried out on one layer by one layer to solve the problems of floating and warping of the board, so that the construction efficiency can be reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, a sand-free gypsum self-leveling material and application thereof in a floor slab heat-insulation and sound-insulation system are provided.
The technical scheme adopted by the invention is as follows: a non-sand type gypsum self-leveling material comprises a non-sand type thin layer gypsum self-leveling material and a non-sand type thick layer gypsum self-leveling material,
the non-sand type thin-layer gypsum self-leveling material adopts a two-component material, comprises a liquid material component and a powder material component,
the liquid material comprises the following raw materials in parts by weight: 30-40 parts of acrylic resin, 55-60 parts of water, 5-10 parts of an organic silicon waterproof agent, 0.5-2 parts of a dispersing agent and 0.5-2 parts of a defoaming agent;
the powder material component comprises the following raw materials in parts by weight: 65-75 parts of industrial by-product gypsum, 5-7.5 parts of lime powder, 5-7.5 parts of activated alumina, 3-5 parts of silica fume, 10-15 parts of stone powder, 0.1-0.3 part of water reducing agent, 0.1-0.3 part of retarder and 0.02-0.1 part of xanthan gum.
Further, the sand-free thick-layer gypsum self-leveling material comprises the following raw materials in parts by weight: 80-90 parts of industrial by-product gypsum, 10-15 parts of stone powder, 3-5 parts of lime powder, 0.1-0.3 part of defoaming agent, 0.1-0.3 part of water reducing agent, 0.02-0.1 part of xanthan gum and 0.1-0.3 part of retarder.
Furthermore, the industrial byproduct gypsum is semi-hydrated gypsum formed by calcining one or more of desulfurized gypsum waste residue, phosphogypsum waste residue and citric acid gypsum waste residue in industrial production.
The application of the sand-free gypsum self-leveling material in a floor slab heat-insulation sound-insulation floor system comprises a base layer, a heat-insulation sound-insulation layer, a mesh cloth layer, a gypsum self-leveling bottom layer and a gypsum self-leveling surface layer from bottom to top,
the heat-preservation sound-insulation layer adopts a heat-preservation sound-insulation plate,
the gypsum self-leveling bottom layer adopts a sand-free thick-layer gypsum self-leveling material,
the gypsum self-flowing plane layer is made of a sand-free thin gypsum self-flowing material.
Furthermore, the heat-insulating sound-proof board adopts one of a modified polystyrene board and an extruded polystyrene board;
preferably, the combustion grade of the heat-preservation sound-insulation plate is not lower than B1 grade, and the compressive strength is not lower than 0.20MPa.
The grid cloth layer is self-adhesive grid cloth.
Preferably, the weight per unit square area of the mesh cloth is not less than 130g.
Inorganic active admixtures such as active alumina and silica fume are added into the sand-free thin-layer gypsum self-leveling material, and can react with gypsum to generate water-insoluble hydration products such as calcium silicate, calcium aluminate and ettringite under the action of alkaline material lime powder, so that the water resistance of the gypsum self-leveling layer is effectively improved; the added organosilicon waterproofing agent and acrylic resin can effectively fill the pores of the self-leveling mortar and wrap the hardened gypsum crystals, thereby improving the compactness of the material, effectively blocking the damage of moisture to the gypsum material and obviously improving the surface hardness of the gypsum self-leveling mortar.
A construction process of a floor slab heat-insulation sound-insulation terrace system comprises the following steps:
(1) Construction of a heat preservation and sound insulation layer: the heat-insulation sound-insulation board is flatly laid on the base layer and is not bonded with the base layer, and the board seam position is sealed by adopting a waterproof adhesive tape, so that the self-leveling slurry is prevented from permeating into the lower part of the board;
(2) And (3) constructing a gridding cloth layer: the self-adhesive grid cloth is adopted to fully spread the surface of the heat insulation sound insulation board, and the lap joint part is reinforced to prevent the lap joint part from being separated;
(3) Constructing a gypsum self-leveling bottom layer: adding water to stir the sand-free thick-layer gypsum self-leveling material, pouring the uniformly stirred slurry on the grid cloth layer from inside to outside in parallel to enable the gypsum to be uniformly distributed in a self-leveling manner, pouring to a marking line, and completing one-step pouring;
(4) Constructing a gypsum self-leveling surface layer: after the gypsum self-leveling bottom layer is hardened, the liquid material components and the powder material components are mixed according to the weight ratio of 0.6-0.7:1, uniformly mixing the gypsum powder and the gypsum self-leveling material in a ratio of 1, and pouring the gypsum self-leveling material on a gypsum self-leveling bottom layer.
Compared with the prior art, the invention has the following advantages:
(1) The sand-free thin-layer gypsum self-leveling material disclosed by the invention improves the softening coefficient and the surface hardness by adopting two modes of chemical modification and physical modification, and the chemical modification mainly comprises the steps of adding an inorganic active admixture and carrying out a chemical reaction with gypsum under the action of an alkaline material to generate a water-insoluble hydration product; the organic silicon waterproof agent and the acrylic resin are added in the physical modification, so that the pores of the self-leveling mortar are effectively filled, the hardened gypsum crystals are wrapped, the compactness of the material is improved, the 24H water permeability of the gypsum self-leveling surface layer is not more than 3mL, the softening coefficient is not less than 0.85, and the surface hardness is not less than 3H, so that the water resistance and the surface hardness of the gypsum mortar are effectively improved, and the application range of the gypsum self-leveling mortar is improved;
(2) The sand-free gypsum self-leveling material is applied to a floor slab heat-insulation and sound-insulation floor system, the floor slab heat-insulation and sound-insulation floor system has the characteristics of high flatness, small cracking risk and high construction efficiency, and the heat-insulation and sound-insulation boards are bonded into a whole by adding a layer of self-adhesive grid cloth on the heat-insulation and sound-insulation boards, so that the phenomena of floating, warping and the like of the heat-insulation and sound-insulation boards in the self-leveling pouring process are effectively reduced, the integral heat-insulation and sound-insulation effect is ensured, and the gypsum self-leveling bottom layer can be poured at one time, so that the construction efficiency is higher;
(3) The gypsum self-leveling bottom layer adopts a sand-free thick-layer gypsum self-leveling material, and the dry density is 1100-1250kg/m 3 The material consumption can be further reduced, and the cementing material utilizes 100% of industrial byproduct gypsum, so that the industrial byproduct gypsum resource is utilized at a high value, and the energy conservation and emission reduction are facilitated, and the environment is protected.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the embodiments of the present invention, but the scope of the present invention is not limited to the following examples.
A non-sand type gypsum self-leveling material comprises a non-sand type thin layer gypsum self-leveling material and a non-sand type thick layer gypsum self-leveling material,
the non-sand type thin-layer gypsum self-leveling material adopts a two-component material, comprises a liquid material component and a powder material component,
the liquid material comprises the following raw materials in parts by weight: 30-40 parts of acrylic resin, 55-60 parts of water, 5-10 parts of an organic silicon waterproof agent, 0.5-2 parts of a dispersing agent and 0.5-2 parts of a defoaming agent;
the powder material comprises the following raw materials in parts by weight: 65-75 parts of industrial by-product gypsum, 5-7.5 parts of lime powder, 5-7.5 parts of activated alumina, 3-5 parts of silica fume, 10-15 parts of stone powder, 0.1-0.3 part of water reducing agent, 0.1-0.3 part of retarder and 0.02-0.1 part of xanthan gum.
The sand-free thick-layer gypsum self-leveling material comprises the following raw materials in parts by weight: 80-90 parts of industrial by-product gypsum, 10-15 parts of stone powder, 3-5 parts of lime powder, 0.1-0.3 part of defoaming agent, 0.1-0.3 part of water reducing agent, 0.02-0.1 part of xanthan gum and 0.1-0.3 part of retarder.
The industrial by-product gypsum is semi-hydrated gypsum formed by calcining one or more of desulfurized gypsum waste residue, phosphogypsum waste residue and citric acid gypsum waste residue in industrial production.
The application of the sand-free gypsum self-leveling material in a floor slab heat-insulation sound-insulation floor system comprises a base layer, a heat-insulation sound-insulation layer, a mesh cloth layer, a gypsum self-leveling bottom layer and a gypsum self-leveling surface layer from bottom to top,
the heat-preservation sound-insulation layer adopts a heat-preservation sound-insulation plate,
the gypsum self-leveling bottom layer adopts a sand-free thick-layer gypsum self-leveling material,
the gypsum self-flow plane layer is made of a sand-free thin gypsum self-flow material.
The heat-insulating sound-proof board adopts one of a modified polystyrene board and an extruded polystyrene board; the combustion grade of the heat-preservation sound-insulation plate is not lower than B1 grade, and the compressive strength is not lower than 0.20Mpa.
The grid cloth layer is self-adhesive grid cloth, and the weight of the unit square area of the grid cloth is not lower than 130g.
Inorganic active admixtures such as active alumina and silica fume are added into the sand-free thin-layer gypsum self-leveling material, and can react with gypsum to generate water-insoluble hydration products such as calcium silicate, calcium aluminate and ettringite under the action of alkaline material lime powder, so that the water resistance of the surface layer gypsum self-leveling is effectively improved; the added organosilicon waterproofing agent and acrylic resin can effectively fill the pores of the self-leveling mortar and wrap the hardened gypsum crystals, thereby improving the compactness of the material, effectively blocking the damage of moisture to the gypsum material and obviously improving the surface hardness of the gypsum self-leveling mortar.
A construction process of a floor slab heat-insulation sound-insulation terrace system comprises the following steps:
(1) Construction of a heat preservation and sound insulation layer: the heat-insulation sound-insulation board is flatly laid on the base layer and is not bonded with the base layer, and the board seam position is sealed by adopting a waterproof adhesive tape, so that the self-leveling slurry is prevented from permeating into the lower part of the board;
(2) And (3) constructing a gridding cloth layer: the self-adhesive grid cloth is adopted to fully spread the surface of the heat insulation sound insulation board, and the lap joint part is reinforced to prevent the lap joint part from being separated;
(3) Constructing a gypsum self-leveling bottom layer: adding water to stir the sand-free thick-layer gypsum self-leveling material, pouring the uniformly stirred slurry on the grid cloth layer from inside to outside in parallel to enable the gypsum to be uniformly distributed in a self-leveling manner, pouring to a marking line, and completing one-step pouring;
(4) Constructing a gypsum self-leveling surface layer: after the gypsum self-leveling bottom layer is hardened, the liquid material components and the powder material components are mixed according to the weight ratio of 0.6-0.7:1, uniformly mixing the raw materials in a ratio of 1, pouring the mixture on a gypsum self-leveling bottom layer, and obtaining the sand-free type thin-layer gypsum self-leveling material.
Example 1
During construction, firstly, the heat-insulation sound-insulation board is flatly laid on the base layer and is not bonded with the base layer, and the board joint position is sealed by adopting a waterproof adhesive tape so as to prevent self-leveling slurry from permeating into the lower part of the board; then, the self-adhesive grid cloth is adopted to fully lay the surface of the heat insulation sound insulation board, and the lap joint part is reinforced to prevent the lap joint part from being separated; and then adding water to stir the non-sand type thick-layer gypsum self-leveling material, wherein the non-sand type thick-layer gypsum self-leveling material comprises the following raw materials in parts by weight: 80 parts of industrial byproduct gypsum, 10 parts of stone powder, 3 parts of lime powder, 0.1 part of defoaming agent, 0.1 part of water reducing agent, 0.02 part of xanthan gum and 0.1 part of retarder, wherein the uniformly stirred slurry is poured on the grid cloth from inside to outside in parallel to obtain a gypsum self-leveling bottom layer, the gypsum self-leveling bottom layer is uniformly distributed and poured to a standard line, and one-time pouring is completed; after the gypsum self-leveling bottom layer is hardened, the liquid material components and the powder material components are mixed according to the weight ratio of 0.6:1, pouring the mixture on a gypsum self-leveling bottom layer to form a gypsum self-leveling plane layer, wherein the liquid material comprises the following raw materials in parts by weight: 30 parts of acrylic resin, 55 parts of water, 5 parts of an organic silicon waterproof agent, 0.5 part of a dispersing agent and 0.5 part of a defoaming agent; the powder material comprises the following raw materials in parts by weight: 65 parts of industrial by-product gypsum, 5 parts of lime powder, 5 parts of activated alumina, 3 parts of silica fume, 10 parts of stone powder, 0.1 part of water reducing agent, 0.1 part of retarder and 0.02 part of xanthan gum.
The obtained gypsum self-leveling surface layer (i.e. sand-free thin-layer gypsum self-leveling material) has the water permeability for 24H of 2.4mL, the softening coefficient of 0.91 and the surface hardness of 3H.
Example 2
The difference from example 1 is that:
the liquid material comprises the following raw materials in parts by weight: 35 parts of acrylic resin, 60 parts of water, 8 parts of an organic silicon waterproof agent, 1 part of a dispersing agent and 1 part of a defoaming agent; the powder material comprises the following raw materials in parts by weight: 70 parts of industrial by-product gypsum, 6 parts of lime powder, 6 parts of activated alumina, 4 parts of silica fume, 12 parts of stone powder, 0.1 part of water reducing agent, 0.1 part of retarder and 0.02 part of xanthan gum.
The obtained gypsum self-leveling layer had a water permeability of 1.8mL for 24 hours, a softening coefficient of 0.87 and a surface hardness of 4H.
Example 3
The difference from example 1 is that:
the liquid material comprises the following raw materials in parts by weight: 38 parts of acrylic resin, 60 parts of water, 8 parts of an organic silicon waterproof agent, 2 parts of a dispersing agent and 1 part of a defoaming agent; the powder material comprises the following raw materials in parts by weight: 72 parts of industrial by-product gypsum, 7 parts of lime powder, 6 parts of activated alumina, 5 parts of silica fume, 12 parts of stone powder, 0.1 part of water reducing agent, 0.1 part of retarder and 0.05 part of xanthan gum.
The obtained gypsum self-leveling layer had a water permeability of 1.5mL for 24 hours, a softening coefficient of 0.88 and a surface hardness of 4H.
Example 4
The difference from example 1 is that:
the liquid material comprises the following raw materials in parts by weight: 40 parts of acrylic resin, 60 parts of water, 10 parts of an organic silicon waterproof agent, 2 parts of a dispersing agent and 2 parts of a defoaming agent; the powder material comprises the following raw materials in parts by weight: 75 parts of industrial byproduct gypsum, 7.5 parts of lime powder, 7.5 parts of activated alumina, 5 parts of silica fume, 15 parts of stone powder, 0.3 part of water reducing agent, 0.3 part of retarder and 0.1 part of xanthan gum.
The obtained gypsum self-leveling layer had a water permeability of 1.5mL for 24 hours, a softening coefficient of 0.85 and a surface hardness of 4H.
Comparative example 1
The difference from example 1 is that:
the thin-layer sand-free paste self-leveling material comprises the following raw materials in parts by weight: 75 parts of industrial by-product gypsum, 15 parts of cement, 5 parts of stone powder, 0.1 part of defoaming agent, 0.15 part of water reducing agent, 0.5 part of cellulose ether and 0.1 part of retarder.
The performance parameters of the thin-layer sand-free paste self-leveling material are as follows: the 24H water permeability is more than 10mL, the softening coefficient is 0.42, and the surface hardness is 2H.
Comparative example 2
The difference from example 1 is that:
the thin-layer sand-free paste self-leveling material comprises the following raw materials in parts by weight: 70 parts of industrial by-product gypsum, 15 parts of cement, 15 parts of mineral powder, 0.1 part of defoamer, 0.15 part of water reducer, 0.5 part of cellulose ether, 0.1 part of retarder and 0.2 part of organosilicon water repellent.
The performance parameters of the thin-layer sandstone-free self-leveling material are as follows: the water permeability is more than 10mL after 24H, the softening coefficient is 0.49, and the surface hardness is 3H.
The properties of the sand-free thin gypsum self-leveling materials prepared in examples 1 to 4 of the present invention and the thin sand-free gypsum self-leveling materials prepared in comparative examples 1 and 2 are shown in the following table 1:
TABLE 1 Gypsum self-leveling Material Performance parameter Table
As can be seen from the above table 1, the 24h water permeability of the sand-free thin-layer gypsum self-leveling material in the examples 1 to 4 is much lower than that of the thin-layer sand-free gypsum self-leveling material in the comparative examples 1 and 2, and the water resistance of the gypsum self-leveling layer is effectively improved; the softening coefficient of the sand-free type thin-layer gypsum self-leveling material in the examples 1 to 4 is far higher than that of the thin-layer sand-free type gypsum self-leveling material in the comparative example 1 and the comparative example 2, and the softening coefficient of the gypsum self-flow plane layer is improved.
Claims (7)
1. A sand-free gypsum self-leveling material is characterized in that: comprises a sand-free type thin layer gypsum self-leveling material and a sand-free type thick layer gypsum self-leveling material, wherein the gypsum self-leveling bottom layer adopts the sand-free type thick layer gypsum self-leveling material, the gypsum self-leveling plane layer adopts the sand-free type thin layer gypsum self-leveling material,
the sand-free thin-layer gypsum self-leveling material is a two-component material and comprises a liquid material component and a powder material component, wherein the use ratio of the liquid material component to the powder material component is 0.6-0.7:1,
the liquid material comprises the following raw materials in parts by weight: 30 to 40 portions of acrylic resin, 55 to 60 portions of water, 5 to 10 portions of organosilicon waterproofing agent, 0.5 to 2 portions of dispersant, 0.5 to 2 portions of defoamer,
the powder material component comprises the following raw materials in parts by weight: 65-75 parts of industrial by-product gypsum, 5-7.5 parts of lime powder, 5-7.5 parts of activated alumina, 3-5 parts of silica fume, 10-15 parts of stone powder, 0.1-0.3 part of water reducing agent, 0.1-0.3 part of retarder and 0.02-0.1 part of xanthan gum.
2. The sand-free gypsum self-leveling material according to claim 1, wherein: the sand-free thick-layer gypsum self-leveling material comprises the following raw materials in parts by weight: 80-90 parts of industrial by-product gypsum, 10-15 parts of stone powder, 3-5 parts of lime powder, 0.1-0.3 part of defoaming agent, 0.1-0.3 part of water reducing agent, 0.02-0.1 part of xanthan gum and 0.1-0.3 part of retarder.
3. The sand-free gypsum self-leveling material according to claim 2, which is characterized in that: the industrial by-product gypsum is semi-hydrated gypsum formed by calcining one or more of desulfurized gypsum waste residue, phosphogypsum waste residue and citric acid gypsum waste residue in industrial production.
4. The application of the sand-free gypsum self-leveling material in the floor slab heat-preservation and sound-insulation terrace system according to any one of claims 1 to 3 is characterized in that: the floor heat-insulating sound-insulating terrace system comprises a base layer, a heat-insulating sound-insulating layer, a mesh cloth layer, a gypsum self-leveling bottom layer and a gypsum self-leveling surface layer from bottom to top,
the heat-preservation sound-insulation layer adopts a heat-preservation sound-insulation plate.
5. Use according to claim 4, characterized in that: the heat-insulating sound-proof board adopts one of a modified polystyrene board and an extruded polystyrene board; the grid cloth layer is self-adhesive grid cloth.
6. Use according to claim 4, characterized in that: the thickness of the heat preservation and sound insulation layer is 15-40mm, the thickness of the grid cloth layer is 0.5-2.0mm, the thickness of the gypsum self-leveling floor layer is 15-80mm, and the thickness of the gypsum self-leveling surface layer is 3-5mm.
7. Use according to claim 4, characterized in that: the method comprises the following steps:
(1) Construction of a heat preservation and sound insulation layer: flatly paving the heat-preservation sound-insulation board on the base layer without being bonded with the base layer, and sealing the board joint position by adopting a waterproof adhesive tape to prevent the self-leveling slurry from permeating into the lower part of the board;
(2) And (3) constructing a gridding cloth layer: the self-adhesive grid cloth is adopted to fully spread the surface of the heat insulation sound insulation board, and the lap joint part is reinforced to prevent the lap joint part from being separated;
(3) Constructing a gypsum self-leveling bottom layer: adding water to stir the sand-free thick-layer gypsum self-leveling material, pouring the uniformly stirred slurry on the grid cloth layer from inside to outside in parallel to enable the gypsum to be uniformly distributed in a self-leveling manner, pouring to a marking line, and completing one-step pouring;
(4) Constructing a gypsum self-leveling surface layer: after the gypsum self-leveling bottom layer is hardened, uniformly mixing the liquid material component and the powder material component in proportion to form a sand-free thin-layer gypsum self-leveling material, and pouring the gypsum self-leveling material on the gypsum self-leveling bottom layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086776.6A CN113716930B (en) | 2021-09-16 | 2021-09-16 | Sand-free gypsum self-leveling material and application thereof in floor slab heat preservation and sound insulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086776.6A CN113716930B (en) | 2021-09-16 | 2021-09-16 | Sand-free gypsum self-leveling material and application thereof in floor slab heat preservation and sound insulation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113716930A CN113716930A (en) | 2021-11-30 |
| CN113716930B true CN113716930B (en) | 2022-10-28 |
Family
ID=78684105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111086776.6A Active CN113716930B (en) | 2021-09-16 | 2021-09-16 | Sand-free gypsum self-leveling material and application thereof in floor slab heat preservation and sound insulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113716930B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010019011A (en) * | 2008-07-11 | 2010-01-28 | Ube Ind Ltd | Floor structure and its construction method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178206A (en) * | 2017-06-19 | 2017-09-19 | 重庆研悦建材有限公司 | A kind of hollow floor obturator and preparation method thereof |
| CN208844862U (en) * | 2018-08-20 | 2019-05-10 | 上海境锐建筑科技有限公司 | Light thermal-insulation gravity flow self-leveling floor |
| CN109133695A (en) * | 2018-10-12 | 2019-01-04 | 四川绵筑新材料有限公司 | A kind of phosphorus building gypsum plastering mortar waterproof admixture and its application method |
-
2021
- 2021-09-16 CN CN202111086776.6A patent/CN113716930B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010019011A (en) * | 2008-07-11 | 2010-01-28 | Ube Ind Ltd | Floor structure and its construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113716930A (en) | 2021-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Singh et al. | Perlite-based building materials—a review of current applications | |
| KR19980084656A (en) | Sound insulation composition | |
| CN111620661B (en) | Self-leveling mortar with waterproof and sound insulation functions and construction method | |
| EP2630103B1 (en) | High strength phosphate-based cement having low alkalinity | |
| JPH06500525A (en) | Reinforced cement mixed with selected aggregates | |
| CN106673580A (en) | Cement-based self-leveling mortar | |
| CN104355584A (en) | Cementitious capillary crystalline waterproofing building material | |
| MX2014012353A (en) | Dimensionally stable geopolymer composition and method. | |
| CN104446295A (en) | Humid-environment-resistance autoclaved aerated concrete block and preparation method thereof | |
| CN114163204B (en) | Sand-free gypsum-based self-leveling mortar and preparation method thereof | |
| CN109956720A (en) | A kind of light silencing gravity flowing levelling mortar and preparation method thereof | |
| CN103992086A (en) | Fire and water resistant aerated brick and making method thereo f | |
| CN103739241B (en) | A kind of self-heat conserving gas concrete special mortar for dry method construction and preparation method thereof | |
| KR101033960B1 (en) | Self-levelling mixture for the prevention of noise | |
| CN108930356B (en) | Wallboard and preparation method and application thereof | |
| CN109133787A (en) | A kind of impervious cracking resistance machine-made sand concrete | |
| RU2338724C1 (en) | Dry heat-insulating plastered cellular polystyrene construction mixture for coatings, items and structures and method of its preparation | |
| CN1318535C (en) | Super strengthen adhesives for adhering ceramic tile of wall and floor | |
| CN113716930B (en) | Sand-free gypsum self-leveling material and application thereof in floor slab heat preservation and sound insulation system | |
| CN111550001A (en) | Light gypsum-based self-leveling floor ground heat-insulation sound-insulation structure and construction method thereof | |
| CN105236884B (en) | Polymer cement materials | |
| CN101767969A (en) | Hidden honeycomb latent heat concrete | |
| CN103288403A (en) | Coating mortar for aerated concrete | |
| CN110526651B (en) | Wallboard material with decorative mortar layer | |
| AU2001272205B2 (en) | Mortar composition and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |