Acoustic Emission and Ultrasonic Characteristics in the Failure Process of Cemented Waste Concrete-Coal Gangue Backfilling (CWCGB) under Uniaxial Loading

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Types</td><td class="align_center">Fine coal gangue</td><td class="align_center">Fine waste concrete</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Bulk density (kg·m<sup>−3</sup>)</td><td class="align_center">1536.36</td><td class="align_center">1295.72</td></tr><tr><td class="align_left">Apparent density (kg·m<sup>−3</sup>)</td><td class="align_center">2130.50</td><td class="align_center">1986.70</td></tr><tr><td class="align_left">Absorption (%)</td><td class="align_center">6.59</td><td class="align_center">12.57</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Bulk density and apparent density of the coal gangue and waste concrete aggregate.</div>

Advances in Civil Engineering

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Table 2

Table 2: Acoustic Emission and Ultrasonic Characteristics in the Failure Process of Cemented Waste Concrete-Coal Gangue Backfilling (CWCGB) under Uniaxial Loading 

Table 2 | Acoustic Emission and Ultrasonic Characteristics in the Failure Process of Cemented Waste Concrete-Coal Gangue Backfilling (CWCGB) under Uniaxial Loading 