A Nonlinear Constitutive Model for Disintegrated Carbonaceous Mudstone Based on Logarithmic Functions

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Degree of compaction</td><td class="align_center" colspan="3">Confining pressure</td></tr><tr class="thead"><td class="align_center">50 kPa</td><td class="align_center">100 kPa</td><td class="align_center">150 kPa</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">90%</td><td class="align_center">10.97</td><td class="align_center">12.65</td><td class="align_center">14.1</td></tr><tr><td class="align_left">93%</td><td class="align_center">7.81</td><td class="align_center">8.33</td><td class="align_center">9.06</td></tr><tr><td class="align_left">96%</td><td class="align_center">9.65</td><td class="align_center">14.76</td><td class="align_center">8.91</td></tr><tr><td class="align_left">Average value</td><td class="align_center" colspan="3">10.69</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Absolute value of relative error of axial strain (%).</div>

Advances in Civil Engineering

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Table 3

Table 3: A Nonlinear Constitutive Model for Disintegrated Carbonaceous Mudstone Based on Logarithmic Functions 