Study on Bond Defect Detection in Grouted Rock Bolt Systems under Pullout Loads

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Ingredient</td><td class="align_center">Density (kg/m<sup>3</sup>)</td><td class="align_center">Elastic modulus (GPa)</td><td class="align_center">Poisson’s ratio</td></tr><tr><td class="align_left" colspan="4"><hr/></td></tr><tr><td class="align_left">Rockbolt</td><td class="align_center">7850</td><td class="align_center">210</td><td class="align_center">0.3</td></tr><tr><td class="align_left">Cement mortar</td><td class="align_center">2035</td><td class="align_center">15.3</td><td class="align_center">0.16</td></tr><tr><td class="align_left">Concrete</td><td class="align_center">2300</td><td class="align_center">33</td><td class="align_center">0.23</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Material properties of the rock bolt, concrete, and cement mortar.</div>

Advances in Materials Science and Engineering

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Table 2

Table 2: Study on Bond Defect Detection in Grouted Rock Bolt Systems under Pullout Loads 