摘要
三趾马黏土具有特殊的持水性质,易引发多种工程问题。为了解决三趾马黏土填筑路基时产生的多种工程问题,进一步确定对其进行改良的适宜胶粒含量,采用不固结不排水三轴压缩试验对掺入胶粒径级(4、8、10、12、14目)、胶粒含量(2%、4%、6%、8%、10%、12%)的三趾马黏土以及素三趾马黏土的强度进行检测。结果表明:三趾马黏土的黏聚力在胶粒含量为2%时达到最大值,当超过2%时,胶粒含量越大粘聚力越小,且不同胶粒径级下胶粒含量对黏聚力的影响趋势具有一致性。当胶粒含量为4%时,掺入4目胶粒的三趾马黏土内摩擦角达到最大值,其它粒径的内摩擦角在胶粒含量为6%时达到最大值。从而得出对三趾马黏土进行改良的适宜的胶粒含量为2%的结论。该研究为废弃轮胎在工程领域的再利用和三趾马黏土路基填料稳定性的提高提供了良好的参考。
The hipparion clay has special water-holding properties,which can cause many kinds of engineering problems.In order to solve the problems of various engineering problems arising from the roadbed construction by the hipparion clay and determine the optimum of colloidal content.Unconsolidated and undrained triaxial compression test was applied to strength test for adding rubber particle size(4orders tol4orders),rubber particle content(2%to8%)of the hipparion clay and normal hipparion clay.The results showed that the hipparion clay cohesive force reached the maximum when rubber particle content is2%.When content is more than2%,the smaller the content,the greater the cohesive force.The influence trend of rubber particles content on the cohesive force is consistent for different rubber particle size.When rubber particle content is4%,mixed with4orders rubber particles,hipparion clay reaches maximum of internal friction angle.Mixed with other rubber particles size,internal friction angle of hipparion clay peaked in the rubber particle content is6%.The suitable rubber particle content of hipparion clay was2%.It provided a good reference for the waste tyres recycling in the field of engineering and hipparion clay subgrade filling stability.
作者
赵胜
Zhao Sheng(The Fifth Engineering Office of Inner Mongolia Road and Bridge Limited Company, Hohhot 010050)
出处
《森林工程》
2017年第5期104-107,112,共5页
Forest Engineering
基金
内蒙古农业大学博士启动基金项目(BJ09-30)
关键词
三趾马黏土
胶粒
径级
含量
强度
hipparion clay
rubber particle
size
content
strength
