%A YANG Jun, YANG Zhi %T Experimental study on shear strength of cement-treated weathered sand under the condition of freeze-thaw cycles %0 Journal Article %D 2014 %J Journal of Shandong University(Engineering Science) %R 10.6040/j.issn.1672-3961.0.2013.303 %P 42-48 %V 44 %N 5 %U {http://gxbwk.njournal.sdu.edu.cn/CN/abstract/article_820.shtml} %8 %X Different content of cement was put into the weathered aggregate with the mass ratio of 3%, 5%, 7%, 9% respectively. The freezing-thawing cycles test was done 1,3,5,7,9 times separately in the freeing test chamber after 7days' standard conditions maintenance at the temperature during -15~15 ℃. Then the direct shear test was done on the strain-controlled direct shear apparatus, and the angle of internal friction and cohesive force change law was obtained for cement stabilization with weathered aggregate in China Three Gorges reservoir area after different times of freezing-thawing cycles test. Based on the Coulomb theory, the change law of shear strength of cement stabilization with weathered aggregate was calculated, which could provide theoretical basis and experiments directions for the weathered aggregate used for the subgrade in China Three Gorges reservoir area.