Impact of weathering on rock material strengths .
Statistical analysis of the results at 95 percent confidence level exhibited that the means of compressive strength for fresh and slightly weathered granites were 113.6±7.0 MPa and 68.9±3.6 MPa. The respective mean values of tensile strength for fresh and slightly weathered granites were 8.8±0.4 MPa and 5.3±0.1 MPa. The results revealed that the geomechanical strengths of fresh rock ...
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