Clayey soil Can be used as roadbed filler, And its performance can meet the requirements of the mechanical properties under specified conditions, fully demonstrated by the tests, And mixed with lime to improve its quality.

Discussion on standard compaction test of swelling clay in roadbed after gray-doped modification;

This paper studies the swelling deformationg of expansive soil and lime improving expansive soil by contrastive CBR tests,and the changing rule of swelling-quantity and time expanding-velocity has been gained,which is helpful to the engineering practice.

The author elaborates on the inflation earth characteristics and harms,analyses the lime improvement inflation earth reform mechanism,presents the technology of improvement inflation earth mixture,emphatically introduces the lime improvement inflation earth quality control and examination method,and the lime dosage diminishing law.

By the technique of sequent liquid flow method,the influence of lime amendment to phosphorus adsorption-desorption kinetics were studied in three acid soils.

Comparison between slow-ashing method and improved fast-ashing method in commission test;