In order to study the reinforcement effect of plant roots on the slope soils under freezing-thaw ing cycles,three types of herbaceous( Zoysia japonica,Eleusine indica and Setaria viridis) roots common to Harbin,Dongying and Hefei highw ays were selected as research objects. Based on the interface friction effect between plant roots and soil,pull-out test and direct shear test were carried out on root-soil composites of different plant roots after various freezing-thaw ing cycles. The experimental results sh...
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