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

<table class="table-group" id="tab8"><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">Mix 1</td><td class="align_center">4.731</td><td class="align_center">4.913</td><td class="align_center">5.245</td></tr><tr><td class="align_left">Mix 2</td><td class="align_center">4.913</td><td class="align_center">5.068</td><td class="align_center">5.372</td></tr><tr><td class="align_left">Mix 3</td><td class="align_center">3.452</td><td class="align_center">3.816</td><td class="align_center">4.275</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

tab8

Table 8

Table 8: [Retracted] Empirical Investigation on Compressive Strength of Geopolymer and Conventional Concretes by Nondestructive Method 