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Red sandstone aerated concrete and preparation method thereof

A technology of aerated concrete and red sandstone, which is applied in the field of building materials, can solve the problems of low utilization rate of red sandstone, low utilization rate of red sandstone, and pollution of the environment by discharge, so as to alleviate the shortage of river sand resources, improve the level of development and utilization, The effect of raising the pH

Active Publication Date: 2015-08-12
HUBEI PROVINCIAL CENT FOR QUALITY SUPERVISION AD TEST OF CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Red sandstone is widely distributed in Hubei, Hunan and other regions in my country, and the distribution in Hunan alone reaches more than 40,000 km 3 At present, the development and utilization rate of red sandstone is at a low level. In the field of road engineering, when the technical conditions cannot meet the requirements of using red sandstone as roadbed filler, it is necessary to carry out long-distance transportation, discarding and land-finding stacking, which will not only cause construction High cost and may pollute the environment
Another study uses red sandstone to undergo solid-phase reaction at high temperature to produce high-temperature sintered bricks or ceramic materials. Such products consume a lot of energy, pollute the environment, and have a low market share.
It can be seen that the current utilization rate of red sandstone is at a low level

Method used

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  • Red sandstone aerated concrete and preparation method thereof
  • Red sandstone aerated concrete and preparation method thereof
  • Red sandstone aerated concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of red sandstone aerated concrete, it is prepared by dry material and water; Water material (dry material) ratio is 0.63;

[0032] The dry material includes cement, red sandstone, quicklime, gypsum, metakaolin, calcined hydrotalcite, aluminum powder paste, water glass and modifier, and the mass percentages of each raw material in the dry material are: cement 13%, red 60% of sandstone, 20% of quicklime, 2% of gypsum, 1.5% of metakaolin, 1.5% of calcined hydrotalcite, 0.11% of aluminum powder paste, 1.5% of water glass, and 0.39% of modifier. The water in the material ratio includes the water contained in the water glass.

[0033] In the above-mentioned technical scheme, SiO in the described red sandstone 2 The content is 84.5wt%, Al 2 o 3 The content is 11.7wt%, the iron content is 1.57wt%, and the rest is other; the red sandstone is ground to a 0.08mm sieve and the remaining 12%, and the homogenization treatment is carried out according to "flat laying and str...

Embodiment 2

[0053] A kind of red sandstone aerated concrete, it is prepared by dry material and water; Water material (dry material) ratio is 0.58;

[0054] The dry material includes cement, red sandstone, quicklime, gypsum, metakaolin, calcined hydrotalcite, aluminum powder paste, water glass and modifier, and the mass percentages of each raw material in the dry material are: cement 13%, red 61% of sandstone, 19% of quicklime, 2% of gypsum, 1.3% of metakaolin, 1.7% of calcined hydrotalcite, 0.11% of aluminum powder paste, 1.5% of water glass, and 0.39% of modifier. The water in the material ratio includes the water contained in the water glass.

[0055] In the above-mentioned technical scheme, SiO in the described red sandstone 2 The content is 84.5wt%, Al 2 o 3 The content is 11.7wt%, and the iron content is 1.57wt%. It is produced in Enshi, Hubei. Grind the red sandstone to a 0.08mm sieve with 12% remaining, and perform homogenization treatment according to "straight-laying and dir...

Embodiment 3

[0078] A red sandstone aerated concrete, which is prepared from dry materials and water; the ratio of water to material (dry materials) is 0.62;

[0079] The dry material includes cement, red sandstone, quicklime, gypsum, metakaolin, calcined hydrotalcite, aluminum powder paste, water glass and modifier, and the mass percentages of each raw material in the dry material are: cement 14%, red 60% of sandstone, 19% of quicklime, 2% of gypsum, 1.3% of metakaolin, 1.7% of calcined hydrotalcite, 0.11% of aluminum powder paste, 1.5% of water glass, and 0.39% of modifier. The water in the material ratio includes the water contained in the water glass.

[0080] In the above-mentioned technical scheme, described red sandstone SiO 2 The content is 84.5wt%, Al 2 o 3 The content is 11.7wt%, and the iron content is 1.57wt%, produced in Enshi, Hubei. Grind the red sandstone to a 0.08mm sieve with 11% remaining, and perform homogenization treatment according to "straight laying" to obtain ...

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Abstract

The invention belongs to the field of building materials. A red sandstone aerated concrete is characterized by being prepared from dry materials and water, and the ratio of water to material is 0.50-0.64. The dry materials include, by weight, 8%-15% of cement, 50%-75% of red sandstone, 10%-20% of lime, 1%-5% of gypsum, 0.5%-3% of metakaolin, 0%-3% of calcined hydrotalcite, 0.02%-0.15% of aluminum powder paste, 0.2%-5% of water glass and 0.05%-2% of a modifier, wherein the water glass is calculated by the solid content, and the ratio of water to material calculates the water contained in the water glass. The invention utilizes the red sandstone to prepare the energy-saving insulation wall material in line with the standard requirements, improves utilization of red sandstone, and eases the problem of shortage of river sand resources.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a red sandstone aerated concrete and a preparation method thereof. Background technique [0002] With the development of society, the shortage of global resources is becoming more and more serious, the energy consumption of buildings has soared, and the importance of energy saving in buildings has become increasingly prominent. 30% of the total energy consumption, the research and development, promotion and use of new energy-saving wall materials have gained a good opportunity and development space. [0003] Aerated concrete is a man-made material with a porous structure. It has the advantages of light weight, heat preservation, sound insulation, earthquake resistance and fire prevention. It is a wall material that saves soil, waste, and energy. Air-entrained concrete has a history of more than 40 years in our country. According to incomplete statistics, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/10C04B14/06
Inventor 王康张玉平曹廷维章杰陈泽涛汪日新程浩
Owner HUBEI PROVINCIAL CENT FOR QUALITY SUPERVISION AD TEST OF CONSTR ENG
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