Preparation method and application of thermal insulation and sound insulation mortar

Abstract

The invention relates to a preparation method and application of thermal insulation and sound insulation mortar. The thermal insulation and sound insulation mortar comprises the following components in parts by weight: 50-70 parts of a cementing material; 10 to 25 parts of functional aggregate; 8-20 parts of a damping material; 5-13 parts of an auxiliary material; comprising the following steps: 1, preparing a cementing material: selecting 5-20 parts of sulphoaluminate cement and 80-100 parts of Portland cement as the cementing material, dissolving the 5-20 parts of sulphoaluminate cement and 80-100 parts of Portland cement in an organic solvent, stirring at normal temperature to form a uniform solution, adding an acid solution or an alkali solution into the sol solution to adjust the pH value, then adding a stabilizer, and standing at room temperature to form gel; 2, preparation of functional aggregate: 10-20 parts of thermal insulation ceramic microbeads are adopted; the building mortar material prepared from the components such as the cementing material, the functional aggregate, the damping material and the auxiliary material is applied to building wall workers, integration of multiple functions such as heat preservation, sound insulation, fire prevention, humidity adjustment and air purification is achieved, and the increasing composite performance requirement of a building for an enclosure structure is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building mortar materials, in particular to a preparation method of thermal and sound insulation mortar and application thereof. BACKGROUND

[0002] With the development of urbanization, in order to pursue the thermal and sound insulation effect of buildings, the design structure and materials of buildings are emerging in endlessly, and the steel reinforced concrete floor and building wall used in traditional buildings have the problem of poor sound insulation and thermal insulation performance. In the prior art, the polyurethane board can only insulate heat but cannot realize the energy storage function, and the sound insulation cotton needs to be installed externally and has complex construction.

[0003] However, the polyurethane board and sound insulation cotton used at present need to be used separately, that is, a multi-layer structure is adopted in the building wall, so as to realize the corresponding thermal and sound insulation functions, resulting in insufficient strength, limited sound insulation volume, and difficult construction. Therefore, it is urgent to design a preparation method of thermal and sound insulation mortar and application thereof to solve the above problems. SUMMARY

[0004] The present application aims to provide a preparation method of thermal and sound insulation mortar and application thereof to solve the above problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A preparation method of thermal and sound insulation mortar, including the following components by weight: 50-70 parts of cementitious material; 10-25 parts of functional aggregate; 8-20 parts of damping material; and 5-13 parts of auxiliary material.

[0007] Including the following steps:

[0008] I. Preparation of cementitious material: 5-20 parts of sulphoaluminate cement + 80-100 parts of portland cement are selected, the sulphoaluminate cement 5-20 parts + the portland cement 80-100 parts are dissolved in an organic solvent, stirred at room temperature to form a uniform solution, acid or alkali is added to the sol solution to adjust the pH value, and a stabilizer is added, and the gel is formed by standing at room temperature;

[0009] II. Preparation of functional aggregate: 10-20 parts of thermal ceramic microbeads are used, the carrier is 50-100 mu hollow ceramic microbeads, and the mass ratio of the adsorbed binary phase change material is 7-8:2-3;

[0010] III. Preparation of damping material: 10-30 parts of methyl vinyl silicone rubber based polymer damping material is used, and the modified mica sheet accounts for 0.3-0.8%, the above-mentioned materials are uniformly dispersed through a mixing device, and a damping material with good weather resistance and stable damping performance is formed;

[0011] Four, auxiliary materials: primary fly ash 15-25 parts, fine sand 60-150 parts, ethylene-vinyl acetate copolymer latex powder 5-10 parts are mixed;

[0012] Five, mixing: the cementing material 50-70 parts; functional aggregate 10-25 parts; damping material 8-20 parts; auxiliary material 5-13 parts, after adding water, latex powder, polycarboxylic acid water reducer, stirring.

[0013] Preferably, the stabilizer is one or more mixtures of potassium silicate, sodium silicate, boron phosphate, aluminum phosphate, alkyl borate and the like.

[0014] Preferably, in step one, the acid solution is hydrochloric acid or sulfuric acid or phosphoric acid;

[0015] The alkali solution is sodium hydroxide or calcium hydroxide or potassium hydroxide.

[0016] Preferably, in step two, the particle size of the hollow ceramic microbeads is 20-40μm, and the bulk density is 100-200kg / m 3 The functional aggregate includes one of thermal insulation ceramic microbeads, expanded perlite, aerated concrete particles and hollow glass microbeads.

[0017] Preferably, in step two, the binary phase change material is a solution formed by melting solid paraffin with a melting point of 47-51℃ and undecylic acid at a ratio of 7-8:2-3 in a water bath at 70-80℃, stirring for 5-10min.

[0018] Preferably, the solution is adsorbed with 50-100μm hollow ceramic microbeads at a ratio of 2-2.5:1 at 45-60℃ for 60-90min, and finally encapsulated with epoxy resin-polyurethane-silicate cement at a mass ratio of 1:1:2-3.

[0019] Preferably, in step three, the modified liquid is prepared by reacting silane coupling agent with deionized water and anhydrous ethanol at a ratio of 1:1:18-25 for 30-40min; the nano-mica sheet is added to the modified liquid at a ratio of 1-2:2-4, and stirred at 1000-2000rpm for 30-40min before drying; and the methyl vinyl silicone rubber is mixed at 60-70℃ at a ratio of 99.2-99.7:0.3-0.8, and granulated after vulcanization.

[0020] Preferably, in step four, the primary fly ash of the auxiliary material has a 45-square mesh sieve residue of ≤12%, and a water content ratio of ≤95%; the fine sand of the auxiliary material has an average particle size of 0.125mm-0.25mm, and the particles with a particle size greater than 0.075mm need to account for more than 85% of the total weight.

[0021] Preferably, in step five, the mixing is done in stages, and the stirring is first slow at 80-130rpm for 2-3min;

[0022] After fast, 150-200rpm, 2-3min.

[0023] The application of the heat preservation and sound insulation mortar, the material prepared by the preparation method of the heat preservation and sound insulation mortar is applied to residential building floor systems, public building wall systems, building energy-saving reconstruction projects, special building structures and floating building floor systems.

[0024] In the above technical solution, the preparation method of the heat preservation and sound insulation mortar and the application thereof have the beneficial effects that:

[0025] The building mortar material prepared by the cementing material, functional aggregate, damping material and auxiliary material has the functions of heat preservation, sound insulation, fire prevention, humidity adjustment and air purification, and meets the increasing composite performance requirements of buildings on the enclosure structure.

[0026] The performance advantages of the heat preservation and sound insulation mortar are derived from the multi-scale structural design: the damping material at the nanoscale provides the basic damping and thermal resistance mechanism; has the effects of sound energy dissipation and thermal resistance; has good durability, high reinforcement and high compactness, effectively resists the erosion of environmental factors, and together guarantees that the performance of the mortar does not significantly decay in the long-term use process, and meets the requirements of the service life of the building. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0028] Figure 1 The flowchart provided for the preparation method and application of the heat preservation and sound insulation mortar of the present application;

[0029] Figure 2 The performance comparison table provided for the preparation method and application of the heat preservation and sound insulation mortar of the present application. DETAILED DESCRIPTION

[0030] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined invention purposes, the specific embodiments, structures, features and effects according to the present application are described in detail as follows in combination with the drawings and preferred embodiments.

[0031] As Figure 1As shown, the preparation method of the heat preservation and sound insulation mortar provided by the embodiment of the application comprises the following components by weight: cementing material 50-70 parts; functional aggregate 10-25 parts; damping material 8-20 parts; auxiliary material 5-13 parts;

[0032] comprising the following steps:

[0033] I. Preparation of cementing material: the cementing material is selected from 5-20 parts of sulphoaluminate cement + 80-100 parts of Portland cement, the 5-20 parts of sulphoaluminate cement + 80-100 parts of Portland cement is dissolved in an organic solvent, stirred at room temperature to form a uniform solution, acid or alkali is added to the sol solution to adjust the pH value, and a stabilizer is added, and the solution is left to stand at room temperature to form a gel;

[0034] The stabilizer is one or a mixture of more than one of potassium silicate, sodium silicate, boron phosphate, aluminum phosphate, alkyl borate, etc. The acid is hydrochloric acid or sulfuric acid or phosphoric acid; the alkali is sodium hydroxide or calcium hydroxide or potassium hydroxide.

[0035] II. Preparation of functional aggregate: 10-20 parts of heat preservation ceramic microbeads are used, the carrier is 50-100 μm hollow ceramic microbeads, and the inner adsorption is binary phase change material with a mass ratio of 7-8:2-3;

[0036] The particle size of the hollow ceramic microbead is 20-40 μm, and the bulk density is 100-200 kg / m 3 The functional aggregate comprises one of heat preservation ceramic microbeads, expanded perlite, aerated concrete particles and hollow glass microbeads. The binary phase change material is prepared by melting solid paraffin with a melting point of 47-51℃ and undecylic acid at a ratio of 7-8:2-3 in a 70-80℃ water bath, stirring for 5-10 min to form a solution. The solution and 50-100 μm hollow ceramic microbeads are adsorbed at a ratio of 2-2.5:1 at 45-60℃ for 60-90 min, and finally encapsulated with epoxy resin-polyurethane-silicate cement with a mass ratio of 1:1:2-3.

[0037] III. Preparation of damping material: 10-30 parts of methyl vinyl silicone rubber-based polymer damping material is used, and the mica sheet is filled with stearic acid and silane coupling agent, and the modified mica sheet accounts for 0.3-0.8%, the above-mentioned materials are uniformly dispersed through a mixing device to form a damping material with good weather resistance and stable damping performance;

[0038] The silane coupling agent, deionized water and anhydrous ethanol are reacted at a ratio of 1:1:18-25 for 30-40 min to prepare a modified liquid; the nano mica sheet and stearic acid are added to the modified liquid at a ratio of 1-2:2-4, and after stirring at 1000-2000 rpm for 30-40 min, they are dried; and the methyl vinyl silicone rubber is mixed at 60-70℃ at a ratio of 99.2-99.7:0.3-0.8, and is granulated after vulcanization.

[0039] Four, auxiliary materials: primary fly ash 15-25 parts, fine sand 60-150 parts, ethylene-vinyl acetate copolymer latex powder 5-10 parts are mixed;

[0040] Wherein, the auxiliary material of primary fly ash uses 45 square hole sieve residue amount ≤12%, water ratio ≤95%; The average particle size of the auxiliary material of fine sand is between 0.125mm-0.25mm, and the particles with particle size greater than 0.075mm need to account for more than 85% of the total weight.

[0041] Five, mixing: the cementing material 50-70 parts; Functional aggregate 10-25 parts; Damping material 8-20 parts; Auxiliary material 5-13 parts, add water, latex powder, polycarboxylic acid water reducer and stir.

[0042] Wherein, the mixing is divided into stages, stirring first slowly, 80-130rpm, 2-3min; Then fast, 150-200rpm, 2-3min.

[0043] The application of a thermal and sound insulation mortar, a material made by using a preparation method of a thermal and sound insulation mortar, is applied to residential building floor systems, public building wall systems, building energy-saving reconstruction projects, special building structures, and floating building floor systems.

[0044] Example one

[0045] A preparation method of a thermal and sound insulation mortar, including the following ingredients by weight: cementing material 50 parts; Functional aggregate 20 parts; Damping material 20 parts; Auxiliary material 10 parts;

[0046] Including the following steps:

[0047] I. Preparation of cementing material: cementing material is selected from sulphoaluminate cement 15 parts + Portland cement 85 parts, sulphoaluminate cement 20 parts + Portland cement 80 parts are dissolved in an organic solvent, stirred at room temperature to form a uniform solution, and then acid or alkali is added to adjust the pH value to 7, and then a stabilizer is added, and the mixture is left to stand at room temperature to form a gel; wherein the stabilizer is a mixture of potassium silicate and sodium silicate. The acid is hydrochloric acid, and the alkali is sodium hydroxide.

[0048] II. Preparation of functional aggregate: 18 parts of heat preservation ceramic microbeads, carrier is 82 μm hollow ceramic microbeads, internal adsorption of binary phase change material, mass ratio 8:3; wherein, the particle size of hollow ceramic microbeads is 30 μm, the bulk density is 120 kg / m3, and the functional aggregate is heat preservation ceramic microbeads. The binary phase change material is to melt the solid paraffin with a melting point of 50℃ and undecylic acid at a ratio of 7:2 in a 72℃ water bath, stirring for 8 min to form a solution. The solution and 70 μm hollow ceramic microbeads are adsorbed at a ratio of 2:1 at 50℃ for 70 min, and finally encapsulated with epoxy resin-polyurethane-silicate cement at a mass ratio of 1:1:2.

[0049] III. Preparation of damping material: 25 parts of methyl vinyl silicone rubber based polymer damping material, filled with stearic acid and silane coupling agent modified mica sheet, modified mica sheet accounts for 0.6%, the above materials are uniformly dispersed through mixing equipment to form damping material with good weather resistance and stable damping performance; wherein, the silane coupling agent is reacted with deionized water and anhydrous ethanol at a ratio of 1:1:20 for 30 min to prepare a modified liquid; nano mica sheet and stearic acid are added to the modified liquid at a ratio of 1:2, stirred at 1600 rpm for 35 min and dried; and methyl vinyl silicone rubber is mixed at 99.5:0.6 at 65℃, and granulated by vulcanization.

[0050] IV. Auxiliary material: 20 parts of primary fly ash, 70 parts of fine sand, and 10 parts of ethylene-vinyl acetate copolymer latex powder are mixed; wherein, the primary fly ash of the auxiliary material has a sieve residue of ≤12% using a 45 square hole sieve, and a water content ratio of ≤95%; the average particle size of the fine sand is 0.2 mm, and the particles with a particle size greater than 0.075 mm need to account for more than 85% of the total weight.

[0051] V. Add water, latex powder and polycarboxylic acid water reducer to the cementitious material 60 parts, functional aggregate 20 parts, damping material 13 parts and auxiliary material 7 parts and stir. Wherein, the mixing is in stages, stirring first slowly, 100 rpm, 3 min; then fast, 180 rpm, 3 min.

[0052] Example Two

[0053] A method for preparing a heat and sound insulation mortar, including the following ingredients by weight parts: cementitious material 60 parts; functional aggregate 15 parts; damping material 15 parts; auxiliary material 10 parts;

[0054] Including the following steps:

[0055] I. Preparation of cementitious material: cementitious material is selected from sulphoaluminate cement 15 parts + Portland cement 85 parts, sulphoaluminate cement 20 parts + Portland cement 80 parts is dissolved in organic solvent, stirring at room temperature to form a uniform solution, adding acid or alkali to the sol solution to adjust the pH value to 7, then adding stabilizer, room temperature standing to form gel; wherein the stabilizer is a mixture of potassium silicate and sodium silicate. Acid is hydrochloric acid; alkali is sodium hydroxide.

[0056] II. Preparation of functional aggregate: 18 parts of heat preservation ceramic microbeads, carrier is 82 μm hollow ceramic microbeads, adsorbing binary phase change material inside, mass ratio is 8:3; wherein the particle size of hollow ceramic microbeads is 30 μm, the bulk density is 120 kg / m3, and the functional aggregate is heat preservation ceramic microbeads. The binary phase change material is to melt solid paraffin with a melting point of 50℃ and undecylic acid at a ratio of 7:2 in a 72℃ water bath, stirring for 8 min to form a solution. The solution and 70 μm hollow ceramic microbeads are adsorbed at a ratio of 2:1 at 50℃ for 70 min, and finally encapsulated with epoxy resin-polyurethane-silicate cement at a mass ratio of 1:1:2.

[0057] III. Preparation of damping material: 25 parts of methyl vinyl silicone rubber based polymer damping material, filled with stearic acid and silane coupling agent modified mica sheet, the modified mica sheet accounts for 0.6%, the above materials are uniformly dispersed through mixing equipment to form a damping material with good weather resistance and stable damping performance; wherein the silane coupling agent is reacted with deionized water and anhydrous ethanol at a ratio of 1:1:20 for 30 min to prepare a modified liquid; the nano mica sheet and stearic acid are added to the modified liquid at a ratio of 1:2, stirred at 1600 rpm for 35 min and then dried; mixed with methyl vinyl silicone rubber at a ratio of 99.5:0.6 at 65℃, and granulated by vulcanization.

[0058] IV. Auxiliary material: 20 parts of first grade fly ash, 70 parts of fine sand, and 10 parts of ethylene-vinyl acetate copolymer latex powder are mixed; wherein the first grade fly ash of the auxiliary material has a sieve residue ≤12% using a 45 square hole sieve, and a water content ratio ≤95%; the average particle size of the fine sand is 0.2 mm, and the particles with a particle size greater than 0.075 mm need to account for more than 85% of the total weight.

[0059] V. Mix 60 parts of cementitious material, 20 parts of functional aggregate, 13 parts of damping material, and 7 parts of auxiliary material, and then add water, latex powder, and polycarboxylic acid water reducer and stir. The mixing is carried out in stages, first slowly at 100 rpm for 3 min, and then quickly at 180 rpm for 3 min.

[0060] Example three

[0061] A preparation method of a heat preservation and sound insulation mortar, including the following ingredients by weight: 70 parts of cementitious material; 10 parts of functional aggregate; 10 parts of damping material; 10 parts of auxiliary material

[0062] comprising the following steps:

[0063] I. Preparation of cementitious material: cementitious material is selected from sulphoaluminate cement 15 parts + Portland cement 85 parts, sulphoaluminate cement 20 parts + Portland cement 80 parts is dissolved in an organic solvent, stirring at room temperature to form a uniform solution, adding acid or alkali to the sol solution to adjust the pH value to 7, then adding stabilizer, room temperature standing to form gel; wherein the stabilizer is a mixture of potassium silicate and sodium silicate. The acid is hydrochloric acid; the alkali is sodium hydroxide.

[0064] II. Preparation of functional aggregate: adopt heat preservation ceramic microbeads 18 parts, carrier is 82 μm hollow ceramic microbead, adsorb binary phase change material inside, mass ratio 8:3; wherein the particle size of hollow ceramic microbead is 30 μm, the bulk density is 120 kg / m3, and the functional aggregate is heat preservation ceramic microbead. The binary phase change material is to melt solid paraffin with a melting point of 50℃ and undecylic acid at a ratio of 7:2 in a 72℃ water bath, stirring for 8 min to form a solution. The solution and 70 μm hollow ceramic microbead are adsorbed at a ratio of 2:1 at 50℃ for 70 min, and finally encapsulated with epoxy resin-polyurethane-silicate cement at a mass ratio of 1:1:2.

[0065] III. Preparation of damping material: adopt methyl vinyl silicone rubber based polymer damping material 25 parts, fill stearic acid and silane coupling agent modified mica sheet, modified mica sheet accounts for 0.6%, the above materials are uniformly dispersed through mixing equipment to form damping material with good weather resistance and stable damping performance; wherein the silane coupling agent is reacted with deionized water and anhydrous ethanol at a ratio of 1:1:20 for 30 min to prepare a modified liquid; nano mica sheet and stearic acid are added to the modified liquid at a ratio of 1:2, stirred at 1600 rpm for 35 min and then dried; and methyl vinyl silicone rubber is mixed at 65℃ at a ratio of 99.5:0.6, and then granulated by vulcanization.

[0066] IV. Auxiliary material: first grade fly ash 20 parts, fine sand 70 parts, ethylene-vinyl acetate copolymer latex powder 10 parts are mixed; wherein the first grade fly ash of the auxiliary material has a sieve residue ≤12% using a 45 square hole sieve, and a water content ratio ≤95%; the fine sand has an average particle size of 0.2 mm, and the particles with a particle size greater than 0.075 mm need to account for more than 85% of the total weight.

[0067] V. Mix cementitious material 60 parts, functional aggregate 20 parts, damping material 13 parts, auxiliary material 7 parts, and then add water, latex powder and polycarboxylic acid water reducer and stir. The mixing is carried out in stages, first slowly at 100 rpm for 3 min, and then quickly at 180 rpm for 3 min.

[0068] The thermal insulation and sound insulation mortar prepared by the first, second and third examples is compared with the performance of the common thermal insulation mortar, and it is shown that the performance of the second example is the best. Figure 2

[0069] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments based on the technical essence of the present application are still within the scope of the technical solution of the present application.​

Claims

1. A method for preparing a thermal insulation and sound insulation mortar, characterized in that: By weight It includes the following ingredients: 50-70 parts of cementitious material; 10-25 parts of functional aggregate; 8-20 parts of damping material; 5-13 copies of supporting materials; The following steps are involved:

1. Preparation of cementitious material: The cementitious material is 5-20 parts of sulphoaluminate cement + 80-100 parts of silicate cement. 5-20 parts of sulphoaluminate cement + 80-100 parts of silicate cement are dissolved in an organic solvent and stirred at room temperature to form a uniform solution. Acid or alkali solution is added to the sol solution to adjust the pH value, and then a stabilizer is added. The solution is allowed to stand at room temperature to form a gel.

2. Preparation of functional aggregate: Use 10-20 parts of thermal insulation ceramic microspheres, 50-100μm hollow ceramic microspheres as carrier, and internally adsorb binary phase change material, with a mass ratio of 7-8:2-3; 3. Preparation of damping material: Use 10-30 parts of methyl vinyl silicone rubber-based polymer damping material, fill it with mica flakes modified with stearic acid and silane coupling agent, and the modified mica flakes account for 0.3-0.8%. The above materials are evenly dispersed through a mixing device to form a damping material with good weather resistance and stable damping performance; 4. Auxiliary materials: Mix 15-25 parts of first-grade fly ash, 60-150 parts of fine sand, and 5-10 parts of ethylene-vinyl acetate copolymer latex powder; 5. Mixing: 50-70 parts of cementitious material; 10-25 parts of functional aggregate; 8-20 parts of damping material; Add 5-13 parts of auxiliary materials, water, latex powder and polycarboxylate water reducer and stir.

2. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step 1, the stabilizer is a mixture of one or more of potassium silicate, sodium silicate, boron phosphate, aluminum phosphate, alkyl borate, etc.

3. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step 1, the acid is hydrochloric acid, sulfuric acid or phosphoric acid; The alkali solution is sodium hydroxide, calcium hydroxide or potassium hydroxide.

4. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step 2, the particle size of the hollow ceramic microspheres is 20-40 μm, and the bulk density is 100-200 kg / m 3 , the functional aggregate includes one of thermal insulation ceramic microspheres, expanded perlite, aerated concrete particles and hollow glass microspheres.

5. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step 2, the binary phase change material is prepared by melting solid paraffin with a melting point of 47-51° C. and undecanoic acid in a ratio of 7-8:2-3 in a water bath at 70-80° C., and stirring for 5-10 minutes to form a solution.

6. The method for preparing a thermal insulation and sound insulation mortar according to claim 5, characterized in that: The solution was adsorbed with 50-100 μm hollow ceramic microbeads at a ratio of 2-2.5:1 at 45-60 °C for 60-90 minutes, and finally encapsulated with epoxy resin-polyurethane-silicate cement at a mass ratio of 1:1:2-3.

7. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step three, the silane coupling agent is reacted with deionized water and anhydrous ethanol in a ratio of 1:1:18-25 for 30-40 minutes to prepare a modified liquid; nano-mica flakes and stearic acid are added to the modified liquid in a ratio of 1-2:2-4, stirred at 1000-2000 rpm for 30-40 minutes and then dried; and mixed with methyl vinyl silicone rubber in a ratio of 99.2-99.7:0.3-0.8 at 60-70°C, and vulcanized to form granules.

8. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step 4, the first-grade fly ash of the auxiliary material has a sieve residue of ≤12% using a 45 square hole sieve and a water ratio of ≤95%; the average particle size of the fine sand of the auxiliary material is between 0.125mm and 0.25mm, and particles with a particle size greater than 0.075mm must account for more than 85% of the total weight.

9. The method for preparing a thermal insulation and sound insulation mortar according to claim 1, characterized in that: In step 5, mixing is performed in stages, with stirring starting at a slow speed of 80-130 rpm for 2-3 min; Then fast, 150-200rpm, 2-3min.

10. Application of thermal insulation and sound insulation mortar, wherein the material is prepared using the preparation method of the thermal insulation and sound insulation mortar according to any one of claims 1 to 9, characterized in that: It is used in residential building floor systems, public building wall systems, building energy-saving renovation projects, special building structures, and floating floor systems.

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