Assessing the Quality of Concrete Tunnel Lining Exposed to Tunnel Fire through Residual Compressive Strength

<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">Material</td><td class="align_center">Proportion (%)</td><td class="align_center">Type (class)</td><td class="align_center">Specific gravity</td><td class="align_center">Size</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Cement including fly ash</td><td class="align_center">90</td><td class="align_center">Fly ash type F</td><td class="align_center">2.1</td><td class="align_center">—</td></tr><tr><td class="align_left">Silica fume</td><td class="align_center">10</td><td class="align_center">—</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr><td class="align_left">Polypropylene fibre</td><td class="align_center">1</td><td class="align_center">—</td><td class="align_center">0.9</td><td class="align_center">Length 12 mm</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Physical properties of the materials and mix design proportion for SPC.</div>

Advances in Civil Engineering

tab2

Table 2

Table 2: Assessing the Quality of Concrete Tunnel Lining Exposed to Tunnel Fire through Residual Compressive Strength 