The design of cement ratio is encountered by means of replacing the soil with grout, and the distribution of cement in the pile is changing with the return soil-cement.

• 在置换地基土才能使水泥掺入量满足设计要求的情况下,上返水泥土的存在改变了水泥掺入量的分配,桩体实际水泥掺入比随水泥土上返量大小及固相中水泥所占比例而改变。