Study on Hygroscopic Swelling and Dehumidification Cracking Characteristics of Expansive Soil under Acid Rain and Cyclic Drying-Wetting

<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" rowspan="3">pH value</td><td class="align_center" colspan="5">Average crack width (mm)</td></tr><tr class="thead"><td class="align_center" colspan="5">Humidity</td></tr><tr class="thead"><td class="align_center">22%</td><td class="align_center">19–21%</td><td class="align_center">15–16%</td><td class="align_center">10–11%</td><td class="align_center">7–8%</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">3</td><td class="align_center">0.00</td><td class="align_center">1.91</td><td class="align_center">2.48</td><td class="align_center">2.27</td><td class="align_center">1.99</td></tr><tr><td class="align_left">5</td><td class="align_center">0.00</td><td class="align_center">1.71</td><td class="align_center">2.19</td><td class="align_center">2.04</td><td class="align_center">1.79</td></tr><tr><td class="align_left">7</td><td class="align_center">0.00</td><td class="align_center">1.66</td><td class="align_center">2.02</td><td class="align_center">1.81</td><td class="align_center">1.41</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The average crack width of the sample under four-time cyclic drying-wetting.</div>

Advances in Civil Engineering

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Table 6

Table 6: Study on Hygroscopic Swelling and Dehumidification Cracking Characteristics of Expansive Soil under Acid Rain and Cyclic Drying-Wetting 