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本文介绍采用煤炭开采废弃物和少量水泥通过外加剂调整制备出了一种可泵性良好、拆模时间和强度适当的充填膏体。其中当促凝剂硅酸钠最佳掺量为0.75%、保水剂HPMC掺量为0.09%、减水剂木钙掺量为0.02%、早强剂氯化钠掺量为0.1%和早强剂三乙醇胺掺量为0.04%时,制备出来的煤矸石基充填膏体符合使用条件。
This article describes the use of coal mining waste and a small amount of cement through the adjustment of additives to prepare a good pumpability, mold release time and strength appropriate filling paste. Among them, when the optimal content of sodium coagulant sodium silicate is 0.75%, the content of HPMC for water retaining agent is 0.09%, the amount of wood-based calcium superplasticizer is 0.02%, the content of early strength agent sodium chloride is 0.1% Agent triethanolamine content of 0.04%, prepared gangue-based paste filled with the use of conditions.