矿粉料在桩底压浆的钻孔灌注柱中的应用

The application of mine powder used as pressing mud for filling pile after drilling hole

钻孔灌注桩后压浆法是在钻孔灌注桩成桩后,将浆料通过导管和设备压入桩底的方法。为改善或根除成孔时形成的泥皮和孔底沉渣引起的桩底承载力不良现象,恢复并提高被扰动和软化的土体强度,尝试采用掺加矿粉的水泥浆,并对掺合后的压浆方法和应用效果进行分析和探讨。结果表明:该浆液各项性能均满足需要,且注浆效果好。

This method means that the mud materials are send to the bottom of piles by ducts and equipments. In order to improve or elimate the effect of mud crust and sediments for pile end force, as well as recovering and improving the strength of soil after loosening and softening, the cement is mixed with mine powder. The paper analyzes the method of pressing mixture and the effect. The results show that the properties of the mixture are satisfied with the requirements.