Low thermal conductivity foam cement

A technology of foaming cement and low thermal conductivity, which is applied in the field of cement, can solve problems affecting cement performance, and achieve the effects of avoiding cracking and enlargement, increasing strength, and reducing capillary channels

Inactive Publication Date: 2018-12-21
怀宁建国混凝土制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal conductivity of foamed cement is generally 0.1-0.2W / m·k, and the thermal conductivity can be reduced by adjusting the cement formula or insulation materials, but generally it is only reduced to about 0.08W / m·k, and it will affect other cement properties. performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of low thermal conductivity foaming cement, its raw material comprises by weight: 100 parts of high-strength sulfoaluminate cement, 2 parts of hydrogen peroxide, 7.5 parts of thermal insulation material, 0.013 part of dispersant, 0.6 part of foam stabilizer, 0.15 part of coagulation accelerator, 13 parts of waterproofing agent, 0.8 part of carboxymethyl cellulose, and 46 parts of water, wherein the thermal insulation materials are nano-titanium dioxide and vitrified microspheres.

Embodiment 2

[0019] A kind of low thermal conductivity foaming cement, its raw material comprises by weight: 100 parts of high-strength sulfoaluminate cement, 1 part of hydrogen peroxide, 8 parts of thermal insulation material, 0.01 part of sodium tripolyphosphate, 0.7 part of foam stabilizer, 0.1 part of coagulation accelerator 14 parts, 14 parts of waterproofing agent, 0.7 part of carboxymethyl cellulose, 48 parts of water, wherein, heat preservation material is nano-titanium dioxide and vitrified microsphere;

[0020] Foam stabilizer is sodium stearate, xanthan gum, polyacrylamide;

[0021] The coagulant is sodium hydroxide, potassium carbonate, sodium fluoride;

[0022] The waterproofing agent is water glass and redispersible latex powder.

Embodiment 3

[0024] A kind of low thermal conductivity foaming cement, its raw material comprises by weight: 100 parts of high-strength sulfoaluminate cement, 3 parts of hydrogen peroxide, 7 parts of thermal insulation material, 0.015 part of sodium tripolyphosphate, 0.5 part of foam stabilizer, 0.2 part of coagulation accelerator 12 parts, 12 parts of waterproofing agent, 0.9 part of carboxymethyl cellulose, 44 parts of water, wherein, heat preservation material is nano-titanium dioxide and vitrified microsphere, and wherein, the weight ratio of nano-titanium dioxide and vitrified microsphere is 2:38;

[0025] The foam stabilizer is sodium stearate, xanthan gum, and polyacrylamide, wherein the weight ratio of sodium stearate, xanthan gum, and polyacrylamide is 8:3:5;

[0026] The coagulant is sodium hydroxide, potassium carbonate and sodium fluoride, wherein the weight ratio of sodium hydroxide, potassium carbonate and sodium fluoride is 9:4:0.1;

[0027] The waterproofing agent is water ...

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PUM

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Abstract

The invention discloses low thermal conductivity foam cement, which is prepared from the following raw materials in parts by weight: 100 parts of high-strength sulphoaluminate cement, 1-3 parts of hydrogen peroxide, 7-8 parts of a heat preservation material, 0.01-0.015 part of a dispersant, 0.5-0.7 part of a foam stabilizer, 0.1-0.2 part of a coagulant, 12-14 parts of a waterproof agent, 0.7-0.9 part of carboxymethyl cellulose and 44-48 parts of water, wherein the heat preservation material is prepared from nano titanium dioxide and vitrified microspheres. The low thermal conductivity foam cement is low in heat conductivity coefficient and better in strength.

Description

technical field [0001] The invention relates to the technical field of cement, in particular to a low thermal conductivity foamed cement. Background technique [0002] Foamed cement is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and evenly mix the foam with the cement slurry, and then go through the pumping system of the foaming machine for cast-in-place construction or mold molding. A new type of lightweight thermal insulation material with a large number of closed pores formed by natural conservation. The thermal conductivity of foamed cement is generally 0.1-0.2W / m·k, and the thermal conductivity can be reduced by adjusting the cement formula or insulation materials, but generally it is only reduced to about 0.08W / m·k, and it will affect other cement properties. performance. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention proposes a foamed cement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/06
CPCC04B28/06C04B2111/27C04B2111/40C04B2201/32C04B2201/50C04B22/068C04B22/16C04B24/04C04B24/2652C04B24/38C04B22/062C04B22/10C04B22/126C04B24/26C04B12/04C04B14/24C04B14/305C04B38/02
Inventor 刘三宝
Owner 怀宁建国混凝土制品有限责任公司
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