Flame retardant and heat-insulation foamed concrete and preparation method thereof

A foamed concrete, flame retardant and thermal insulation technology, applied in the field of flame retardant thermal insulation building materials, can solve the problems of restricting the popularization and application of foam concrete materials, easy to absorb water and crack, low strength, etc., and meet thermal insulation requirements, excellent thermal insulation performance, strength high effect

Inactive Publication Date: 2012-01-18
杨淑贤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of prior art foam concrete are: low strength, large shrinkage, and easy water absorption and cracking; these shortcomings limit the popularization and application of foam concrete materials

Method used

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  • Flame retardant and heat-insulation foamed concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]Flame retardant and thermal insulation foam concrete 1 is prepared according to the following mass ratios: 40 parts of cement, 42 parts of fly ash, 18 parts of mineral powder, 0.2 parts of water reducing agent, 0.03 parts of cellulose ether, 0.2 parts of water repellent, 4.8 parts of gypsum, 0.08 parts of polypropylene fiber, 0.20 parts of foaming agent, and 0.33 parts of water.

[0055] The preparation method is as follows:

[0056] (1) Mix cement, fly ash, mineral powder, water reducing agent, cellulose ether, water repellent, gypsum, and anti-cracking fiber evenly to prepare dry powder.

[0057] (2) The foaming agent is diluted with water, and the foaming agent aqueous solution is made into a foam with an air compression foaming machine;

[0058] (3) Add water to the dry powder material prepared in step (1) and stir evenly;

[0059] (4) Add the foam prepared in the step (2) into the cement slurry, mix and stir evenly, and prepare the flame-retardant and heat-preserv...

Embodiment 2

[0061] Flame retardant and thermal insulation foam concrete 2 is prepared according to the following mass ratios: 50 parts of cement; 25 parts of fly ash; 25 parts of mineral powder; 0.4 parts of water reducing agent; 0.03 parts of cellulose ether; 0.16 parts of polypropylene fiber; 0.21 parts of foaming agent; 0.31 parts of water.

[0062] The preparation method is the same as in Example 1.

Embodiment 3

[0064] Flame-retardant and thermal insulation foam concrete 3 is prepared according to the following mass ratios: 60 parts of cement; 12 parts of fly ash; 28 parts of mineral powder; 0.3 parts of water reducing agent; 0.05 parts of cellulose ether; 0.2 parts of water-repellent agent; 0.24 parts of polypropylene fiber; 0.20 parts of foaming agent; 0.32 parts of water.

[0065] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to a flame retardant and heat-insulation building material, relates to flame retardant and heat-insulation foamed concrete and a preparation method thereof. In the prior art, the foamed concrete has disadvantages of low strength, large shrinkage, easy cracking due to water absorption. The flame retardant and heat-insulation foamed concrete provided by the present invention comprises the following materials, wherein the materials comprise, by mass, 30-60 parts of cement, 30-70 parts of fly ash, 10-40 parts of mineral powder, 0.05-1.0 parts of a siloxane water reducing agent, 0.02-0.2 parts of a cellulose ether, 0.05-1.0 parts of a silane water-repelling agent, 1-10 parts of anhydrite, 0.06-0.2 parts of polypropylene fibers, 0.1-0.4 parts of a foaming agent and 0.30-0.60 parts of water. The flame retardant and heat-insulation foamed concrete and the preparation method provided by the present invention have the following advantages that: the foamed concrete has characteristics of high strength, low shrinkage and good water repellency; the foamed concrete has excellent heat insulation property, such that different heat insulation requirements of the building can be met; the preparation process is simple; the industrial waste materials such as fly ash, mineral powder and the like are adopted so as to protect the environment.

Description

technical field [0001] The invention belongs to flame-retardant and heat-preserving building materials, in particular to a flame-retardant and heat-preserving foam concrete and a preparation method thereof. Background technique [0002] At present, a large number of thermal insulation materials are used in China's building energy-saving and thermal insulation projects. Because many materials have poor flame-retardant effects and are prone to fires, the Chinese building energy-saving market urgently needs flame-retardant thermal insulation materials. The combustion performance of the inorganic foam insulation material reaches the non-combustible A level. Among inorganic foam materials, foam glass, foam aluminum, and foam ceramics are expensive and cannot be the main source of flame-retardant and thermal insulation building materials. Although the price of fiber insulation materials such as rock wool and mineral wool is slightly lower, it is still much higher than that of foa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B28/36
Inventor 杨淑贤
Owner 杨淑贤
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