Experimental Study on Physicomechanical Properties of Deep Sandstone by Coupling of Dry-Wet Cycles and Acidic Environment

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Before immersion</td><td class="align_center">pH = 4</td><td class="align_center">pH = 5</td><td class="align_center">pH = 6</td><td class="align_center">pH = 7</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left"><i>m</i></td><td class="align_center">1.177</td><td class="align_center">1.258</td><td class="align_center">1.434</td><td class="align_center">1.197</td><td class="align_center">1.137</td></tr><tr><td class="align_left"><i>F</i>/10<sup>−2</sup></td><td class="align_center">1.268</td><td class="align_center">1.318</td><td class="align_center">1.582</td><td class="align_center">1.371</td><td class="align_center">1.377</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Values of <i>m</i> and <i>F</i> in different states.</div>

Advances in Civil Engineering

tab6

Table 6

Table 6: Experimental Study on Physicomechanical Properties of Deep Sandstone by Coupling of Dry-Wet Cycles and Acidic Environment 