Experimental Study of Performance of Over-wet Soil Subgrde Filler Treated with Quick Lime and Cement
To improve the performance of the over-wet soil subgrade filler,using quick lime and cement as the modifiers,the performance of the modified over-wet soil subgrade filler was compared and studied by experiments.The results showed that compared with plain over-wet soil,the optimum water content,unconfined compressive strength,and resilience modulus of the modified over-wet soil were improved and increased with the increase of the content of quick lime or cement.Although the CBR value of the over-wet soil treated with quick lime was improved,it still could not meet the specification requirements of subgrade fillers for class-1 highways and expressways.The CBR value of the cement-treated over-wet soil was significantly increased and met the specification requirements.The optimum water content of over-wet soil treated with quick lime was higher than that treated with cement,however,the cement-treated over-wet soil had better CBR value,unconfined compressive strength,and resilience modulus.
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