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A method for preparing concrete with industrial waste slag fine aggregate

A technology of industrial waste residue and preparation method, which is applied in solid waste management, sustainable waste treatment, climate sustainability, etc., to achieve the effects of good strength deferred, high substitution rate, and simple and easy preparation method

Active Publication Date: 2016-06-01
徐州经济技术开发区诚意商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of industrial waste slag fine aggregate concrete preparation method, solve the problem of filling cement consumption, improve concrete strength and improve concrete workability

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: On the basis of the standard mix ratio of ordinary concrete, the industrial waste slag is broken to a particle size range smaller than the sand, so that it forms a continuous gradation between the sand, industrial waste slag and cement, and the fine industrial waste slag and stones are respectively The weight ratio can replace 10% fine aggregate and 10-20% cement in the same amount. When other mixing materials remain unchanged, the cost of mixing concrete can be saved by 10-20 yuan per cubic meter. The age strength is equal to or higher than that of contrast concrete;

[0021] The preparation method includes: material preparation, calculation ratio and benchmark ratio, the specific method process is as follows:

[0022] (1) Material preparation: crush industrial waste until it passes through a 0.3mm square hole sieve. If it is powder such as fly ash, it can be used directly without crushing. If the raw material is wet, it needs to be dried before crushing;...

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Abstract

The invention provides a method for preparing concrete from industrial waste residue fine aggregate, which belongs to preparation methods for concrete. According to the method, a standard mix ratio of common concrete is adjusted and fine industrial waste residue and cobblestone are used together to equivalently replace a part of fine aggregate and cement so as to improve physical and mechanical properties of concrete and reduce material cost; in mixing of concrete materials, fine industrial waste residue is used to equivalently replace 10 to 15% of fine aggregate and fine industrial waste residue and cobblestone are used together to equivalently replace 20 wt% of cement on the basis of the standard mix ratio of common concrete, other mixing materials are maintained unchanged, so cost for each cubic of concrete can be decreased by 10 to 20 Yuan, and the mixed concrete has strength equivalent to or higher than the strength of concrete prepared based on the standard mix ratio in every stage and has the characteristics of good workability, small slump loss, low heat of hydration, good later strength deferment, resistance to sulfate erosion, strong resistance to chemical attack, good durability, no unfavorable influence on concrete performance, etc.

Description

technical field [0001] The invention relates to a concrete preparation method, in particular to a preparation method of industrial waste slag fine aggregate concrete. Background technique [0002] my country's iron and steel, electric power, chemical industry and other industries have released more than 1 billion tons of solid industrial waste on average annually, including: 200 million tons of fly ash, nearly 100 million tons of slag, 20 million tons of steel slag, and more than 200 million tons of coal gangue , more than 1 billion tons of waste concrete and construction waste, 50 million tons of urban sludge, and 260 million tons of industrial tailings. At present, the comprehensive utilization rate of solid waste in my country is less than 40%, and the accumulated solid waste has reached 7 billion tons. About 70,000 Km2 caused great environmental pollution and waste of land resources. Among the above-mentioned industrial wastes, in addition to the good use of slag, the eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/04
CPCY02W30/91
Inventor 姬永生田丰侯志辉金澄鲍忠正刘志勇张领雷
Owner 徐州经济技术开发区诚意商品混凝土有限公司
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