摘   要：基于正交试验研究了微珠、硅灰、矿粉对超高强灌浆料流动度及抗压强度的影响，并通过极差分析得到了较优配合比。结果表明：微珠能有效改善灌浆料的流动度，且掺入适量微珠能提高灌浆料的后期抗压强度；硅灰掺入会增大灌浆料的需水量，使其流动度降低，但掺入适量硅灰能提高灌浆料的1 d抗压强度；矿粉对灌浆料的流动度及抗压强度的提高均有利；当微珠、硅灰、矿粉的掺量分别为胶凝材料总质量的7%、4%、7%时，制备的灌浆料各项性能满足GB/T 50448—2015《水泥基灌浆材料应用技术规范》中Ⅲ类灌浆料的要求。

Abstract: Based on the orthogonal test method, the influences of microbeads, silica fume and mineral powder on the fluidity and compressive strength of ultra-high strength grouting material were studied, and a optimal mix proportion was obtained through range analysis. The results show that the microbeads can effectively improve the fluidity of the grouting material, and an appropriate amount of microbeads can improve the late compressive strength of the grouting material. The incorporation of silica fume can increase the water demand and reduce the fluidity of the grouting material, and the incorporation of appropriate amount of silica fume can increase the early compressive strength of the grouting material at various curing time. Mineral powder is beneficial to the fluidity and compressive strength of the grouting material. When the content of microbeads, silica fume and mineral powder are 7%, 4% and 7% of the total weight of the cementitious material, the performance of the grouting material can meet the require of Type Ⅲ grouting material for GB/T 50448—2015 Code for Application Technique of Cementitious Grout.