The Potential to Replace Cement with Nano-Calcium Carbonate and Natural Pozzolans in Cemented Mine Backfill

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Appearance</td><td class="align_center">CaCO<sub>3</sub> (%)</td><td class="align_center">HCl insoluble (%)</td><td class="align_center">Particle size (nm)</td><td class="align_center">Fe (%)</td><td class="align_center">Mn (%)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">White powder</td><td class="align_center">≥98</td><td class="align_center">≤0.1</td><td class="align_center">20–50</td><td class="align_center">≤0.08</td><td class="align_center">≤0.006</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Chemical and physical properties of nano-calcium carbonate.</div>

Advances in Civil Engineering

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Table 3

Table 3: The Potential to Replace Cement with Nano-Calcium Carbonate and Natural Pozzolans in Cemented Mine Backfill 