采用干式制砂设备生产玄武岩机制砂时，会产生大量的石粉，储备不当时会造成环境污染，针对这一问题，提出使用玄武岩石粉取代水泥和机制砂制备干混砂浆，以达到利用尾矿降低砂浆生产成本的效果，同时满足绿色环保的要求。本文通过试验研究了使用玄武岩石粉取代水泥和机制砂对干混砂浆各性能指标的影响，以确定玄武岩石粉的最佳使用量，为玄武岩石粉的利用提供基础。试验结果表明，玄武岩石粉取代率较低时，砂浆各性能变化较小，在20%以内时均可满足抗压强度要求。
When using dry sand-making equipment to produce basalt machine-made sand, a large amount of stone powder will be produced, and improper storage will cause environmental pollution. In view of this problem, it is proposed to use basalt powder instead of cement and machine-made sand to prepare dry-mixed mortar. In order to achieve the effect of using tailings to reduce the production cost of mortar and meet the requirements of green environmental protection. In this paper, the influence of using basalt powder instead of cement and machine-made sand on the performance index of dry-mixed mortar is studied through experiments, in order to determine the best usage of basalt powder and provide the basis for the utilization of basalt powder. The test results show that when the substitution rate of Black Tortoise rock powder is low, the performance of mortar changes little, and it can meet the requirement of compressive strength when it is less than 20%.
