摘   要：选用普通硅酸盐水泥、砂、石膏、铝矾土等来研制早强微膨胀高性能锚杆注浆材料。采用正交试验，并用极差法对试验结果进行分析，得出以下结论：1d、3d、14d抗压强度和抗折强度分别达到17MPa、38MPa、61MPa和4.9MPa、7.5MPa、9.1MPa。1d竖向膨胀率为0.089%，属于微膨胀，后期膨胀较稳定，可以有效避免由于浆体收缩引起的锚杆失效。此外，利用SEM、XRD和压汞仪对硬化浆体微观结构进行表征，发现1d时硬化浆体中就有大量的钙矾石生成。

Abstract: A new type of anchor grouting material with early strength, micro-expansion and high performance by using Portland cement, sand, gypsum, bauxite, etc. is developed. The orthogonal test and range analysis method for analyzing the experiment result are used. The analytic results demonstrate that the compressive strength of the mortar is 17MPa、38MPa、61MPa and the flexural strength is 4.9MPa、7.5MPa、9.1MPa at 1d, 3d and 14d age. The expansion ration is 0.089%, which belongs to micro-expansion and its volume is stability after 14 days, and then it could avoid the damage of anchor resulting from the shrinkage of mortar. It is characterized by SEM, XRD and MIP, and the result shows that it appears a lot of ettringite in hard mortar at 1d.