Ultra-light-weight foam concrete and manufacturing method of same

A foam concrete, ultra-light technology, applied in ceramic products, other household utensils, applications, etc., can solve the problems of easy pulverization of the surface, difficulty in controlling the foaming process, bubble size, and low compressive strength

Inactive Publication Date: 2013-01-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The density of the foam concrete is 130~150kg / m 3 However, the resulting foamed concrete has low compressive strength, easy pulverization of the surface, and due to the use of chemical foaming, it is difficult to control the foaming process and the size of the bubbles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The cementitious material of the present invention is composed of 42.5 ferric aluminate cement and granulated blast furnace slag in a mass ratio of 9:1. The granulated blast furnace slag is granulated blast furnace slag that meets the national standard GB / T 203-2008. The weight ratio of the water to the gelling material is 0.4, the hydroxyethyl methyl cellulose ether is 0.04% by weight of the gelling material, and the viscosity range of the hydroxyethyl methyl cellulose ether is 50000~100000mPa s, the basalt fiber is 0.2% by mass of cementitious material, the length of basalt fiber is 6-18mm, and the water-reducing agent is polycarboxylate water-reducing agent, which is used by Wuhan Huaxuan High-tech Co., Ltd. The KH-5 polycarboxylate superplasticizer produced (its main component is polycarboxylate, the water reducing rate is 30%, the same below), its solid content is 20%, and its mass ratio is 0.2% for gelled material. The foaming agent is a mixture of rosin and anima...

Embodiment 2

[0032] The cementitious material described in the present invention is composed of 42.5 ferrite aluminate cement and granulated blast furnace slag in a mass ratio of 9:1, and the granulated blast furnace slag is granulated according to the national standard GB / T 203-2008 Blast furnace slag, the weight ratio of the water to the cementitious material is 0.33, the hydroxyethyl methyl cellulose ether is 0.06% of the cementitious material quality, and the viscosity range of the hydroxyethyl methyl cellulose ether is 50000~100000mPa·s, the basalt fiber is a cementitious material with a mass ratio of 0.3%, and the water reducer is a polycarboxylate water reducer with a solid content of 20%, which is a cementitious material with a mass ratio of 0.2% %, the foaming agent is a mixture of rosin and animal protein composite surfactant in a mass ratio of 3:1, and the mass ratio of the prepared foam to gelling material is 12%.

[0033] 1) Preparation of cement slurry: Weigh quantitatively 1...

Embodiment 3

[0039] The cementitious material of the present invention is composed of 42.5 ferric aluminate cement and granulated blast furnace slag in a mass ratio of 7.3:1. The granulated blast furnace slag is granulated blast furnace slag that meets the national standard GB / T 203-2008. The weight ratio of the water to the gelling material is 0.45, the hydroxyethyl methyl cellulose ether is 0.02% by weight of the gelling material, and the viscosity range of the hydroxyethyl methyl cellulose ether is 50000~100000mPa s, the basalt fiber is 0.1% by mass of cementitious material, and the water reducer is polycarboxylate water reducer with a solid content of 20%, which is 0.4% by mass of cementitious material. The foaming agent described above is a mixture of rosin and animal protein composite surfactant with a mass ratio of 6:1, and the mass ratio of the prepared foam to gelling material is 6%.

[0040] 1) Preparation of cement slurry: Weigh quantitatively 225g of water, 440g of iron-alumina...

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Abstract

The invention relates to an ultra-light-weight foam concrete and a manufacturing method of the same. The manufacturing method comprises the following steps of: slowing stirring water, a cementing material, a water reducer and basalt fiber at a speed of 120rpm for 2 minutes after being mixed uniformly, quickly stirring the water, the cementing material, the water reducer and the basalt fiber at a speed of 240rpm for 2 minutes, mixing foam and cement paste, adding hydroxyethyl methyl cellulose into the mixture, stirring the mixture at a speed of 120rpm for 2 minutes to obtain paste, pouring the paste into a mould, putting the paste into a curing chamber for standard curing after being demoulded, and standing the paste for 28 days to obtain the ultra-light-weight foam concrete. Compared with the prior art, the ultra-light-weight foam concrete provided by the invention has the advantages of small dry density, low thermal conductivity and high compressive strength, can be made into a sheet material with a fire rating A and applied in an external thermal insulation system, and has the advantages of short curing time and no easy for surface pulverization.

Description

technical field [0001] The invention relates to the field of building material preparation, in particular to an ultra-light foam concrete and a preparation method thereof. Background technique [0002] Foam concrete is a lightweight concrete with a large number of closed pores formed by introducing foaming agent into mortar, forming and curing. Because of its advantages of high fluidity (good workability), light weight, and good thermal insulation performance, it has been widely used in wall thermal insulation systems, pipeline backfill, roadbed treatment and other fields. Due to the different performance requirements of foam concrete in various fields, foam concrete with different densities can be prepared. By changing the amount of holes introduced to control the density, foamed concrete can be used as load-bearing, thermal insulation, partition and filling materials in buildings, which has great economic significance and good development prospects. [0003] As the globa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B38/02
Inventor 马保国刘敏李相国蹇守卫苏雷赵志广
Owner WUHAN UNIV OF TECH
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