Process for preparing steel slag cement concrete by using converter steel slag

Abstract

The invention discloses a process for preparing steel slag cement concrete from converter steel slag, and relates to the field of concrete preparation.The process comprises the steps that 1 / 2 of water and a concrete reinforcing agent are added into a mixing machine to be stirred, cement, steel slag, sand and gravel are added after uniform stirring, stirring continues to be conducted, and a mixture A is obtained after uniform stirring; adding the rest 1 / 2 of the water reducing agent, the curing agent and the defoaming agent into the mixing machine, stirring uniformly to obtain a mixture B, adding the mixture B into the mixture A, continuously stirring, and uniformly stirring to obtain the steel slag cement concrete. The cement and the steel slag serve as main raw materials, a large amount of steel slag can be turned into wealth and fully utilized, the environment is protected, meanwhile, resource waste is avoided, then the concrete reinforcing agent is added, the mechanical property of the steel slag cement concrete is improved, and the defect that existing steel slag cement concrete is prone to cracking is overcome.

Description

technical field [0001] The invention relates to the field of concrete preparation, in particular to a process for preparing steel slag cement concrete by using converter steel slag. Background technique [0002] Steel slag is a solid waste slag composed of smelting reactants, eroded furnace bodies, furnace repair materials, impurities brought by metal charge and slag-forming materials specially added to adjust the properties of steel slag in the process of steel production. In actual production, 15%-20% of steel slag is produced for every 1 ton of steel produced. A large amount of steel slag is directly stacked on the open storage yard near the smelter without treatment, occupying a lot of land resources and steel slag. The heavy metals in the steel will also damage the surrounding ecological environment with the rainwater leaching. If these steel slag is not comprehensively utilized, it will occupy more and more land, pollute the environment, and cause waste of resources; ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a process for preparing steel slag cement concrete using converter steel slag: by adding 1 / 2 of water and concrete reinforcing agent Stir in the mixer, add cement, steel slag, sand, and gravel after stirring evenly, and continue to stir, and get mixture A after stirring evenly, add the remaining 1 / 2 of water reducer, curing agent and defoamer to Stir in the mixer, mix evenly to get the mixture B, add the mixture B to the mixture A and continue to stir, and get the steel slag cement concrete after mixing evenly, which solves the problem of the low plastic deformation ability of the existing steel slag concrete, which causes The cracking of the concrete structure, and micro-cracks appear on the surface. Under the influence of expansion, the overall safety of the concrete structure is seriously threatened.

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