@article{Mary Ann Q. Adajar_Miller DL. Cutora_2018, title={THE EFFECT OF VOID RATIO, MOISTURE CONTENT AND VERTICAL PRESSURE ON THE HYDROCOMPRESSION SETTLEMENT OF COPPER MINE TAILING}, volume={14}, url={https://geomatejournal.com/geomate/article/view/1838}, abstractNote={<p>Copper mine tailing (CMT) has the potential to be used as embankment material but this<br>waste material contains plasticity. Soils containing plasticity are highly reactive to any form of liquid and<br>considered to have greater compressibility when exposed to water. As an embankment material, CMT is<br>susceptible to different environmental condition which can cause significant settlement. One possible cause<br>of volume loss is the compression due to wetting or hydrocompression. This study aims to determine the<br>consolidation properties and hydrocompression settlement of waste materials with plasticity like copper mine<br>tailing when used as embankment material. One-dimensional consolidation tests were performed on<br>reconstituted specimens. The obtained consolidation properties indicate that CMT is very slightly<br>compressible under over-consolidated condition to moderately compressible under normally consolidated<br>condition. The hydrocompression settlement of CMT in relation to initial void ratio, moisture content and<br>vertical pressure was investigated. The hydrocompression settlement increases with increasing pressure until<br>the preconsolidation pressure is reached, then decreases with pressure beyond the preconsolidation pressure.<br>Samples with lower density and initial water content less than its optimum exhibit greater hydrocompression<br>settlement. The determined hydrocompression strain in every condition is less than 5% which means that<br>CMT has a degree of collapsibility classified as low to negligible despite of having plasticity. CMT when<br>used as embankment materials should be prepared with initial moisture content slightly more than its<br>optimum, it should be in its very dense condition and preloaded with vertical stress more than its<br>preconsolidation pressure to make hydrocompression strain negligible.</p>}, number={44}, journal={GEOMATE Journal}, author={Mary Ann Q. Adajar and Miller DL. Cutora}, year={2018}, month={Apr.}, pages={82–89} }