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《Chinese Journal of Underground Space and Engineering》 2011-S1
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Influencing Factors on Dynamic Elastic Modulus of Lime Soil for Subgrade

Chen Bao,Li Yonggang(Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,China)  
Dynamic triaxial tests were carried out to study the effect of several factors,such as the confining pressure,frequency,consolidation ratio,dynamic strain,and lime content,on the dynamic elastic modulus and the maximum dynamic elastic modulus of lime soil.Combined with the equivalent hyperbolic model,the maximum dynamic elastic modulus are also determined under different experimental conditions.The results show that: the dynamic elastic modulus and the maximum dynamic elastic modulus of lime soil increase with the growth of the confining pressure,frequency,consolidation ratio and lime content;the dynamic elastic modulus decreases by the increasing of dynamic strain,and the reduction is significant in small strain conditions,and tends to be gentle when the strain increases;the maximum dynamic elastic modulus of lime soil increases slowly under the conditions of low lime content and low consolidation ratio,and increases quickly to high lime content and high consolidation ratio.
【CateGory Index】: U416.1
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