Through practice of filling the roadbed construction of section II on Cen Wu highway in Guangxi Province, this paper explains the construction technology and method of filling roadbed with sand high liquid clay.

In this paper,the author introduce the construction of one section of Jingzhu highway in south GuangDong,and present the experimental analysis of applying high liquid limited sand soil on high-class road bed,for the reference of relevant engineers and technicians.

Study of fielding testing for high limit liquid soil improving to roadbed-stuffing;

Study on compaction standard of subgrade with bearing sand silt of low liquid limit;

Study of compacting mechanism and construction technology of filling road bed with bearing sand silt of low liquid limit;