Study on Evaluation of Ultimate Mechanical Strength of Cement Improved Silty Clay Roadbed
In order to improve the frost resistance of silty clay roadbed and reduce the vibration settle-ment of roadbed,cement is used to reinforce the silty clay roadbed.In this paper,the factors affecting the mechanical strength of cement-modified silty clay are studied,and a method for predicting the ultimate me-chanical strength of cement-modified silty clay roadbed in the laboratory is proposed.The results show that the compressive strength of cement improved soil increases linearly with the increase of cement dosage,in-creases nonlinearly with the increase of compaction coefficient,and the growth rate decreases gradually.The compressive strength increases rapidly and then tends to be gentle with the extension of the curing age.After 90 days,the strength basically does not change.
万方数据
维普
