High-content steel slag grouting material

Abstract

The invention relates to a high-content steel slag grouting material, which is prepared from the following raw materials by weight percent: 0%-8% of steel slag, 0%-16% of sulfoaluminate cement, 0%-31% of portland cement, 0%-15% of coal ash, 0%-50% of sand, 0.2%-2.0% of exciting agent, 0.4%-1.5% of water reducing agent and 0.02%-0.05% of expanding agent. The steel slag grouting material provided by the invention has the advantages of high steel slag content, high strength, no shrinkage and good mobility; the performance indexes of the steel slag grouting material meet the requirements of Technical Regulations of Cement-Based Grouting Material Application GB / T50448-2008; resources can be saved; solid wastes can be utilized; low carbon economy and resource recycling can be realized.

Description

technical field [0001] The invention relates to a cement-based large-volume steel slag grouting material. The used admixtures are steel slag powder and steel slag particles, which can be added simultaneously or one of them as required. Background technique [0002] With the rapid development of the modern iron and steel industry and the continuous increase in steel output, the output of industrial solid waste such as steel slag has also increased sharply. The rational use and effective recycling of steel slag is an important symbol of the technological progress of the modern iron and steel industry. One of them is an important measure for iron and steel enterprises to solve the shortage of scrap steel, reduce production costs, and improve the economic benefits of enterprises. It is also a good strategy for protecting the environment, reducing pollution, turning harm into profit, turning waste into treasure, and benefiting the country and the people. The major steel producing...

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Problems solved by technology

[0005] In order to solve the above-mentioned deficiencies in the patent documents and prior art, as well as the problems of high quartz sand and river sand content, low interface strength, and poor durability of the existing commercially available grouting materials, the present invention proposes a steel slag powder Part of the cementitious material is replaced by adding steel slag particles to replace part or all of the quartz sand and river sand, and steel slag powder and steel slag particles can be added at the same time according to actual needs, or only steel slag powder or steel slag particles can be added, and the mixing can be flexibly adjusted Increased proportion of new grouting material

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