Three kinds of grout with phosphate as their retarder are screened out by orthogonal experiment according to engineering requirement. Their performance and feature are introduced.

• 针对工程实际的要求，筛选了以磷酸盐为缓凝剂的3种类型的注浆浆液，采用正交法进行试验研究，并介绍了它们各自的性能特点。