摘要
选用红黏土和角砾组成土石混合料,以5 mm作为土、石料分界粒径,通过制备不同含石量和颗粒级配的土石混合料试件进行压缩特性和抗剪强度研究.结果表明:含石量为70%左右时,土石混合料具有良好的压缩性能,孔隙比最小,压缩模量和最大干密度最大;含石量对抗剪强度影响较大,随试件含石量增加,抗剪强度递增,而曲率系数对土石混合料抗剪强度影响较少.
In this paper,red clay and breccias,which are 5mm in diameter as critical grain size,are used to make the soil-rock mixture for the preparation of different soil-rock mixture specimens with different stone contents and particle gradations.Through the study of compression characteristics and shear strength of the test piece,it was found that the soil-rock mixture had good compressibility,minimum void ratio,maximum compressive modulus and maximum dry density when the content of the stone was about70%.The shear strength has a great influence.With the increase of stone content,the shear strength increases,while the curvature coefficient has little effect on the shear strength of earth-rock mixture.
作者
郭东红
GUO Dong-hong(Shanxi Transportation Research Institute,Taiyuan 030006,China)
出处
《兰州工业学院学报》
2018年第6期20-23,56,共5页
Journal of Lanzhou Institute of Technology
关键词
土石混合料
路基
压缩特性
抗剪强度
soil-rock mixture
roadbed
compression properties
shear strength
