Effects of Doping Glass Fibers on the Early Strength of Sand-Based Cemented Paste Backfill for Solid Wastes Disposal in a Coal Mine

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Diameter (mm)</td><td class="align_center">Elongation at break (%)</td><td class="align_center">Elastic modulus (MPa)</td><td class="align_center">Density (g/cm<sup>3</sup>)</td><td class="align_center">Tensile strength (MPa)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">0.3–0.4</td><td class="align_center">3.3–3.6</td><td class="align_center">7300–8600</td><td class="align_center">2.49</td><td class="align_center">3100–4650</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The basic parameters of glass fiber.</div>

Advances in Civil Engineering

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Table 2

Table 2: Effects of Doping Glass Fibers on the Early Strength of Sand-Based Cemented Paste Backfill for Solid Wastes Disposal in a Coal Mine 