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Chemical foaming low-density alkali slag foam concrete and preparation method thereof

A foamed concrete and chemical foaming technology, applied in the field of building materials, can solve problems such as poor durability, change, and a large amount of garbage, and achieve the effects of short setting time, rapid strength development, and good thermal insulation and sound insulation performance.

Inactive Publication Date: 2021-02-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, because organic thermal insulation materials have many problems such as fire hazards, poor durability, and a large amount of garbage after service, it is only a matter of time before building thermal insulation materials represented by polystyrene boards withdraw from the market. In this case, inorganic thermal insulation materials The research and preparation will lead to changes in the field of thermal insulation materials

Method used

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  • Chemical foaming low-density alkali slag foam concrete and preparation method thereof
  • Chemical foaming low-density alkali slag foam concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: A kind of chemically foamed low-density alkali slag foam concrete is composed of the following components by mass percentage: slag: 56%; water glass: 16%; sodium hydroxide: 2%; chemical blowing agent: 1 %; foam stabilizer: 0.057%; water: 12%; surfactant: 1.0%.

[0046] Among them, the modulus of water glass is 3.08, the water content is 57.1%, Na 2 O content is 9.1%, SiO 2 The content is 27.19%. The chemical foaming agent is aluminum powder, which is prepared into aluminum powder-water-surfactant suspension during use. The foam stabilizer is tea saponin. Surfactant is aqueous calcium stearate, and the mass fraction is 50%. The slag is ground water-quenched blast furnace slag.

[0047] The preparation method is as follows:

[0048] S1: Disperse aluminum powder in water and stir for 5 minutes, then add water-based calcium stearate and mix and stir for 5 minutes to prepare water-aluminum powder-water-based calcium stearate suspension;

[0049] S2: Add ...

Embodiment 2

[0052] Embodiment 2: A kind of chemically foamed low-density alkali slag foam concrete is composed of the following components by mass percentage: slag: 58%; water glass: 20%; sodium hydroxide: 4%; chemical foaming agent: 2 %; foam stabilizer: 0.082%; water: 18%; surfactant: 1.2%.

[0053] Among them, the modulus of water glass is 3.08, the water content is 57.1%, Na 2 O content is 9.1%, SiO 2 The content is 27.19%. The chemical foaming agent is aluminum powder, which is prepared into aluminum powder-water-surfactant suspension during use. The foam stabilizer is tea saponin. Surfactant is aqueous calcium stearate, and the mass fraction is 50%. The slag is ground water-quenched blast furnace slag.

[0054] The preparation method is as follows:

[0055] S1: Disperse aluminum powder in water and stir for 5 minutes, then add water-based calcium stearate and mix and stir for 5 minutes to prepare water-aluminum powder-water-based calcium stearate suspension;

[0056] S2: Add ...

Embodiment 3

[0059]Embodiment 3: A kind of chemically foamed low-density alkali slag foam concrete is composed of the following components by mass percentage: slag: 57%; water glass: 18%; sodium hydroxide: 3%; chemical foaming agent: 1.3% %; foam stabilizer: 0.057%; water: 15%; surfactant: 1.1%.

[0060] Among them, the modulus of water glass is 3.08, the water content is 57.1%, Na 2 O content is 9.1%, SiO 2 The content is 27.19%. The chemical foaming agent is aluminum powder, which is prepared into aluminum powder-water-surfactant suspension during use. The foam stabilizer is tea saponin. Surfactant is aqueous calcium stearate, and the mass fraction is 50%. The slag is ground water-quenched blast furnace slag.

[0061] The preparation method is as follows:

[0062] S1: Disperse aluminum powder in water and stir for 5 minutes, then add water-based calcium stearate and mix and stir for 5 minutes to prepare water-aluminum powder-water-based calcium stearate suspension;

[0063] S2: Ad...

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Abstract

The invention discloses chemical foaming low-density alkali slag foam concrete and a preparation method thereof, and relates to the technical field of building materials, and the key points of the technical scheme are as follows: the chemical foaming low-density alkali slag foam concrete comprises the following components in percentage by mass: 56-58% of slag; 16-20% of water glass; 2-4% of sodiumhydroxide; 1-2% of a chemical foaming agent; 0.057-0.082% of a foam stabilizing agent; 12-18% of water; and 1.0-1.2% of a surfactant. The alkali slag foam concrete provided by the invention is as lowas 250kg / m < 3 > in density, has the advantages of short setting time and high strength development speed, also has good heat preservation and sound insulation properties, can effectively utilize industrial by-product slag, is a light, low-carbon and environment-friendly concrete material, and conforms to the development trend of 'green and environment-friendly' building materials.

Description

technical field [0001] The invention relates to the technical field of building materials, and relates to foamed concrete, in particular to a chemically foamed low-density alkali slag foamed concrete and a preparation method thereof. Background technique [0002] Cement is a commonly used building material in industry. However, the production process of cement consumes a lot of energy and emits carbon dioxide. According to data, the carbon dioxide gas emitted during the production of ordinary Portland cement accounts for 5% of the global carbon dioxide release. This will exacerbate the greenhouse effect and is not in line with the national strategy of low energy consumption and low carbon. Alkali slag cement is a new type of cementitious material whose main components are alkali metal compounds and ground water-quenched blast furnace slag, and is an industrial by-product. Alkali slag cement is known as the cementitious material with the most development potential in the 21...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08C04B38/02C04B103/40C04B103/48C04B111/52
CPCC04B28/082C04B38/02C04B2103/40C04B2103/48C04B2111/52C04B2201/20C04B2201/50C04B12/04C04B18/142C04B22/062C04B22/04C04B24/38C04B24/085
Inventor 张智强陈飞屹余林文李建林杨长辉
Owner CHONGQING UNIV
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