Flame-retardant high-strength foam concrete and preparation method thereof

A foamed concrete, high-strength technology, used in the construction industry, can solve the problems of foamed concrete prone to shrinkage and cracking, affecting foam water absorption and waterproofness, and large shrinkage of mixed slurry, so as to promote secondary hydration reaction, The effect of changing surface properties and improving post-strength

Inactive Publication Date: 2018-10-09
上海天行新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main problem that the foamed concrete of prior art exists is: 1, because foamed concrete is mainly to be made up of cement and other silicon-calcium material, water, air bubble, its mixed slurry shrinkage rate is big; 2, tensile strength is lower, in Under limited condi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Cement 40 parts, Ⅱ grade fly ash 20 parts, fine sand 30 parts, inorganic flame retardant 2 parts, silicate 5 parts, expansion agent 11 parts, foaming agent 0.7 parts, foam stabilizer 0.4 parts, water reducing agent 0.6 parts, 1.5 parts of early strength agent, 1.2 parts of water repellent, 0.2 parts of fiber, and 45 parts of water.

[0032] Preparation:

[0033] A. Weigh cement, grade Ⅱ fly ash, fine sand, inorganic flame retardant, silicate, fiber according to the proportion and mix them evenly to make a dry powder;

[0034] B. Add expansion agent, foam stabilizer, water reducing agent, early strength agent, water repellent and water to the dry powder prepared in step A according to the ratio, and stir uniformly at 900-1100rpm for 6-10min to prepare cement Pulp

[0035] C. Dilute 0.4-0.7 parts of foaming agent and water at a mass ratio of 1:35 into foaming liquid, and use a foaming machine to make the foaming liquid into foam;

[0036] D. Add the foam prepare...

Example Embodiment

[0039] Example 2

[0040] 60 parts cement, 30 parts fly ash, 15 parts fine sand, 6 parts inorganic flame retardant, 15 parts silicate, 4 parts expansion agent, 0.4 parts foaming agent, 1.2 parts foam stabilizer, water reducing agent 1.1 parts, early strength agent 0.3 parts, water-repellent agent 0.6 parts, fiber 0.1 parts, water 25 parts.

[0041] Preparation:

[0042] A. Weigh cement, grade Ⅱ fly ash, fine sand, inorganic flame retardant, silicate, fiber according to the proportion and mix them evenly to make a dry powder;

[0043] B. Add expansion agent, foam stabilizer, water reducing agent, early strength agent, water repellent and water to the dry powder prepared in step A according to the ratio, and stir uniformly at 900-1100rpm for 6-10min to prepare cement Pulp

[0044] C. Dilute 0.4-0.7 parts of foaming agent and water at a mass ratio of 1:35 into foaming liquid, and use a foaming machine to make the foaming liquid into foam;

[0045] D. Add the foam prepared in step C to the...

Example Embodiment

[0048] Example 3

[0049] Cement 50 parts, Ⅱ grade fly ash 25 parts, fine sand 25 parts, inorganic flame retardant 5 parts, silicate 10 parts, expanding agent 8 parts, foaming agent 0.6 parts, foam stabilizer 1 part, water reducing agent 0.8 parts, 1.2 parts of early strength agent, 1.1 parts of water-repellent agent, 0.15 parts of fiber, 30 parts of water.

[0050] Preparation:

[0051] A. Weigh cement, grade Ⅱ fly ash, fine sand, inorganic flame retardant, silicate, fiber according to the proportion and mix them evenly to make a dry powder;

[0052] B. Add expansion agent, foam stabilizer, water reducing agent, early strength agent, water repellent and water to the dry powder prepared in step A according to the ratio, and stir uniformly at 900-1100rpm for 6-10min to prepare cement Pulp

[0053] C. Dilute 0.4-0.7 parts of foaming agent and water at a mass ratio of 1:35 into foaming liquid, and use a foaming machine to make the foaming liquid into foam;

[0054] D. Add the foam prepare...

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PUM

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Abstract

The invention provides flame-retardant high-strength foam concrete and a preparation method thereof. The foam concrete comprises the following components by mass: 40-60 parts of cement, 20-30 parts ofgrade-II fly ash, 15-30 parts of fine sand, 2-6 parts of an inorganic flame retardant, 5-15 parts of silicate, 4-11 parts of an expansion agent, 0.4-0.7 part of a foaming agent, 0.4-1.2 parts of a foam stabilizer, 0.6-1.1 parts of a water reducing agent, 0.3-1.5 parts of an early-strength agent, 0.6-1.2 parts of a water repellent, 0.1-0.2 part of fibers and 25-45 parts of water. The invention provides the flame-retardant high-strength foam concrete and the preparation method thereof; and the prepared foam concrete has high strength, flame retardation performance, water resistance and anti-cracking performance.

Description

technical field [0001] The invention belongs to the technical field of construction industry, and in particular relates to a flame-retardant high-strength foam concrete and a preparation method thereof. Background technique [0002] With the needs of building energy conservation and the requirements for fire protection grades of building insulation materials, developing new building energy-saving materials that meet the requirements of building energy conservation and fire protection grades has become the mission and work direction of special building materials researchers. [0003] As a new type of building energy-saving material, foam concrete is a foamy concrete material containing a large number of small, closed, and uniform pores inside. The pores inside the material are closed and do not communicate with each other, and cannot form convective circulation of air. Isolation, each spherical air hole is surrounded by a solidified cement slurry film, the interface forms a g...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10C04B24/02C04B111/28
CPCC04B24/026C04B28/021C04B2111/28C04B2201/20C04B2201/50C04B18/08C04B14/06C04B22/0013C04B12/04C04B22/064C04B2103/48C04B2103/302C04B22/0093C04B24/42C04B20/0048C04B38/106
Inventor 徐俊赵生怡张云仁金建清
Owner 上海天行新型材料有限公司
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