Evaluation of Reclaimed Hydrated Fly Ash as an Aggregate for Sustainable Roadway Base Material

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Chemical composition</td><td class="align_center">Mass percentage (%)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Silicon dioxide (SiO<sub>2</sub>)</td><td class="align_center">26.81</td></tr><tr><td class="align_left">Aluminum oxide (Al<sub>2</sub>O<sub>3</sub>)</td><td class="align_center">15.94</td></tr><tr><td class="align_left">Ferric oxide (Fe<sub>2</sub>O<sub>3</sub>)</td><td class="align_center">5.21</td></tr><tr><td class="align_left">Calcium oxide (CaO)</td><td class="align_center">22.45</td></tr><tr><td class="align_left">LOI (loss on ignition) 950<sup>o</sup>C</td><td class="align_center">18.96</td></tr><tr><td class="align_left" colspan="2"><hr/></td></tr><tr><td class="align_left">Engineering properties</td><td class="align_center"> </td></tr><tr><td class="align_left">Bulk specific gravity</td><td class="align_center">1.5</td></tr><tr><td class="align_left">Dry unit weight (kN/m<sup>3</sup>)</td><td class="align_center">1440</td></tr><tr><td class="align_left">Los Angeles abrasion (AASHTO T96), grading B, loss %</td><td class="align_center">&lt;55</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Chemical constituent and engineering properties of the HFA [<a href="/journals/ace/2021/8756569/#B7" target="_blank">7</a>].</div>

Advances in Civil Engineering

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Table 1

Table 1: Evaluation of Reclaimed Hydrated Fly Ash as an Aggregate for Sustainable Roadway Base Material 