摘要
为描述橡胶砂复合土抗剪强度的变化规律,对其进行直剪试验,分析不同掺量和粒径的橡胶颗粒在不同围压下橡胶砂复合土抗剪强度变化的特征。结果表明:橡胶砂复合土的抗剪强度主要由内摩擦角决定;随着橡胶颗粒掺量的增加,内摩擦角呈先增大后减小的趋势,掺加一定量的橡胶颗粒可以提高风积沙的抗剪强度且最佳粒径为1.18mm。
In order to describe the changing rule of the rubber compound sand soil shear strength,the sand of rubber composite soil indoor direct shear test,through the analysis of the test different content and particle size of rubber particles under different confining pressure,the change characteristics of rubber compound sand soil shear strength.The experimental results show that the shear strength of rubber sand composite soil is mainly determined by the Angle of internal friction.With the increase of rubber particle content,the Angle of internal friction first increases and then decreases,indicating that the increase of rubber particles can improve the shear strength of aeolian sand and the optimal particle size is 1.18 mm.
出处
《科学技术创新》
2020年第11期97-99,共3页
Scientific and Technological Innovation
关键词
橡胶砂复合土
抗剪强度
直剪试验
Rubber compound sand soil
Shear strength
Direct shear test
