An Apparatus for Evaluating Adhesion Between Soils and Solid Surfaces
An Apparatus for Evaluating Adhesion Between Soils and Solid Surfaces
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DOI：
10.1520/jte12286j
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发表时间：
2002
影响因子：
1.2
通讯作者：
K. S. Rao;M. Allam;R. Robinson
中科院分区：
文献类型：
--
作者：
K. S. Rao;M. Allam;R. Robinson
研制了一套用于不排水条件下土-土和土-固体材料接触面试验的直剪试验装置。对该装置的评价表明，满足模拟剪切不排水条件的所有要求。界面试验结果表明，粘附因子α随固体材料表面粗糙度的增大而增大。在正常固结状态下，对于给定的表面，α实际上与粘土的不排水抗剪强度无关。在超固结状态下，光滑表面的α与不排水抗剪强度和超固结比有关，而粗糙表面的α与不排水抗剪强度和超固结比无关。
An apparatus in the direct shear mode has been developed to conduct soil-soil and soil-solid material interface tests in the undrained condition. Evaluation of the apparatus showed that all the requirements for simulating the undrained condition of shear are satisfied. The interface test results show that the adhesion factor α increases with the surface roughness of the solid material. In the case of the normally consolidated state, α is practically independent of the undrained shear strength of the clay for a given surface. For the overconsolidated state, α depends on the undrained shear strength and the overconsolidation ratio for smooth surfaces but for rough surfaces, α is independent of both undrained shear strength and overconsolidation ratio.