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What is the relationship between basic friction angle and residual friction angle of sandstone?
Wiki User
∙ 10y ago
For rock, the basic friction angle is somewhat less than residual angle. The basic friction strength is that shear resiatance of two smooth surfaces. The residual shear atrength is that for two rough surfaces after long shearing. At residual state, the shear resistance almost keeps constant and no shear-dilation.
Wiki User
∙ 10y ago
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