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Aerated concrete doped with steel slag

A technology of aerated concrete and steel slag, applied in the field of aerated concrete, can solve the problems of low activity and achieve the effects of low preparation cost, small modification, and reduced emission pollution

Inactive Publication Date: 2021-08-03
ZHEJIANG PROV BUILDING MATERIAL SAI&TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that steel slag contains minerals such as calcium silicate similar to Portland cement, which has certain hydraulic properties, but its activity is very low at room temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] The aerated concrete mixed with steel slag uses steel slag to replace the cement in the calcareous raw material of the aerated concrete, and the replacement amount of the steel slag is 20-50% of the original cement in the aerated concrete by weight percentage.

[0017] For example: when the original batching scheme of the aerated concrete not containing steel slag is: by weight percentage, when cement 20%, lime 15%, sand or fly ash 62%, gypsum 3%; adopt technical scheme of the present invention (steel slag Substitute cement 30%) is: according to weight percentage, cement 14%, steel slag 6%, lime 15%, sand or fly ash 62%, gypsum 3%. In order to better stimulate the activity of steel slag, 3% calcium chloride (dissolved in water first) of steel slag consumption can be added as the active stimulating agent of steel slag. The aerated concrete production line only needs to add a steel slag silo, and the ingredients are fed in parallel with cement lime, and the production pro...

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Abstract

The invention discloses aerated concrete doped with steel slag, cement in the calcium raw material of the aerated concrete is replaced by the steel slag, and the replacement amount of the steel slag is 20-50% of the original cement amount in the aerated concrete in percentage by weight. The aerated concrete has the characteristics that the use amount of cement in the aerated concrete calcareous raw material is reduced, the resource utilization of the steel slag is expanded, the emission pollution amount is reduced, and the preparation cost is relatively low.

Description

technical field [0001] The invention relates to an aerated concrete, in particular to an aerated concrete mixed with steel slag. Background technique [0002] Air-entrained concrete is a lightweight porous silicate made of siliceous and calcareous materials as the main raw materials, mixed with an air-generating agent, and made through batching, stirring, pouring, pre-curing, cutting, and autoclaving. products. After years of wall reform and promotion, aerated concrete has become the leading new wall material in my country and has been widely used in construction projects. Air-entrained concrete mainly includes two series of cement-lime-sand and cement-lime-fly ash, of which cement and lime are calcareous materials, accounting for about 30-35%, sand and fly ash are siliceous materials, accounting for about 60-70%. Cement and lime are high-energy-consuming and high-emission industrial products, and are used in a huge amount in the aerated concrete industry every year. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08C04B28/14
CPCC04B28/082C04B28/14C04B7/00C04B18/142C04B22/064C04B14/06C04B22/124C04B18/08
Inventor 祝志雄应晓猛
Owner ZHEJIANG PROV BUILDING MATERIAL SAI&TECH