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Advances in Civil Engineering
/
2020
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Article
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Tab 8
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Research Article
Experimental Study on Physicomechanical Properties of Deep Sandstone by Coupling of Dry-Wet Cycles and Acidic Environment
Table 8
Correlation coefficient
R
between test value and calculated value.
pH
4
5
6
7
R
0.96
0.91
0.98
0.96