论文部分内容阅读
针对煤矸石在规范击实条件下最大干密度偏小和三轴试验试块制作成型存在缺陷的问题,改进了三轴试件的制作方法,对某地区拟路用煤矸石进行了试件成型试验和煤矸石细料、掺25%粗粒料、掺50%粗粒料和掺75%粗粒料的三轴试验。试验结果表明:压实功对煤矸石最佳含水量和最大干密度影响不容忽视;粗粒料含量对路用煤矸石抗剪强度指标粘聚力和摩擦角的影响分别呈现线性变化和非线性变化规律;根据粗粒料含量对粘聚力和摩擦角的影响关系,给出了粗粒料含量与粘聚力和摩擦角增量的函数关系。
Aiming at the problem of the maximum dry density of coal gangue under the standard compaction conditions and the defect of the manufacture and molding of the triaxial test coupon, the production method of the triaxial coupon is improved, and the sample formation of the coal gangue to be used in a certain area is completed Triaxial tests of coal gangue fines, 25% coarse aggregate, 50% coarse aggregate and 75% coarse aggregate were carried out. The test results show that the influence of compaction on the optimal moisture content and maximum dry density of coal gangue can not be ignored. The influence of coarse aggregate content on cohesion and friction angle of shear strength index of road gangue exhibit linear change and nonlinearity According to the influence of coarse aggregate content on cohesion and friction angle, the function of coarse aggregate content as a function of cohesion and friction angle increment is given.