Abstract
In this paper, coal gangue soil, steel slag powder and polycarboxylic acid superplasticizer with different dosages were combined into ordinary Portland cement. Grouting solution was prepared according to different water-cement ratios and solidified under standard conditions. Through orthogonal experiments, the influence of different dosages on the rate of grout stones and the compressive strength of stones in different ages was studied. The experimental results show that the increase in the amount of coal gangue will lead to the decrease of the slurry stone first and then increase, and the compressive strength will decrease. The increase in the amount of steel slag powder reduces the stone rate and compressive strength of the slurry.
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