Recycling of Oily Sludge as a Roadbed Material Utilizing Phosphogypsum-Based Cementitious Materials

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr class="thead"><td class="align_left">Materials</td><td class="align_center">SiO<sub>2</sub></td><td class="align_center">CaO</td><td class="align_center">SO<sub>3</sub></td><td class="align_center">Al<sub>2</sub>O<sub>3</sub></td><td class="align_center">Fe<sub>2</sub>O<sub>3</sub></td><td class="align_center">MgO</td><td class="align_center">Na<sub>2</sub>O</td><td class="align_center">LOI</td></tr><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr><td class="align_left">Content (%)</td><td class="align_center">7.83</td><td class="align_center">3.74</td><td class="align_center">3.41</td><td class="align_center">4.23</td><td class="align_center">10.14</td><td class="align_center">0.58</td><td class="align_center">2.41</td><td class="align_center">66.21</td></tr><tr class="table-tr"><td colspan="9"><hr class="tbody-hr"/></td></tr></table></td></tr><tr class="table-fn"><td><div>LOI: loss on ignition at 1000°C.<br/></div></td></tr></table>

<div>Chemical composition of dried oily sludge.</div>

Advances in Civil Engineering

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Table 2

Table 2: Recycling of Oily Sludge as a Roadbed Material Utilizing Phosphogypsum-Based Cementitious Materials 