[Retracted] Empirical Investigation on Compressive Strength of Geopolymer and Conventional Concretes by Nondestructive Method

<table class="table-group" id="tab9"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Concrete mix</td><td class="align_center" colspan="3">UPV (km/s)</td></tr><tr class="thead"><td class="align_center">7 days</td><td class="align_center">14 days</td><td class="align_center">28 days</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">GPC 1</td><td class="align_center">1.534</td><td class="align_center">2.556</td><td class="align_center">3.884</td></tr><tr><td class="align_left">GPC 2</td><td class="align_center">2.523</td><td class="align_center">3.596</td><td class="align_center">4.756</td></tr><tr><td class="align_left">GPC 3</td><td class="align_center">2.573</td><td class="align_center">3.592</td><td class="align_center">4.165</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Advances in Materials Science and Engineering

tab9

Table 9

Table 9: [Retracted] Empirical Investigation on Compressive Strength of Geopolymer and Conventional Concretes by Nondestructive Method 