00000ctm a22000004i 4500 UP-99796217612935556 Buklod 20230215105418.0 m |o d | ta 190107s xx d r |||| u| (iLib)UPD-00397766037 DENGII rda eng DMLUC LG 993.5 2017 E63 L59 Lizardo, Raziel Angela author. Compressive strength of gold mine tailings stabilized with coal fly ash and cement Raziel Angela Lizardo, Ludwig Van B. Molina ; Lestelle V. Torio-Kaimo, faculty adviser. Quezon City College of Engineering, University of the Philippines Diliman 2017. x, 78 leaves color illustrations 28 cm. text rdacontent unmediated rdamedia volume rdacarrier Thesis (Bachelor of Science in Civil Engineering)--University of the Philippines Diliman June 2017. In efforts to address the growing issue of mining wastes in the form of mine tailings, studies have been conducted on remediation by stabilization through additives like fly ash, cement and lime, proving that the addition of such materials affect not only the leaching potential of the mine tailings, but also strength parameters and other engineering properties. This study presents the results of laboratory research on the utilization of gold mine tailings (GMT) mixed with coal fly ash (CFA) as soil cement, focusing on the compressive strength. Following ASTM standards, the samples of GMT and GMT-CFA mixtures, with varying CFA percentages, underwent a series of preliminary laboratory tests to determine key geotechnical properties. A predetermined amount of cement was then used as a binding material for the mixtures. The cemented mixtures were prepared in standard cylindrical molds, with optimum moisture and at maximum density for confined compressive strength testing (UCT) at 7, 14 and 28 days. Results show that addition of CFA does not significantly change most geotechnical properties of the GMT samples. However, the addition of cement along with CFA significantly increases the compressive strength of GMT. Using one-way analysis of variance, it was observed that there is no significant difference between the 7th, 4th, and 28th day strength of all the mix proportions. By then taking the average value of compressive strength for the different proportions and comparing these values, it was seen that the optimum GMT-CFA mixture is 5% CFA, with an average strength reaching 1.89 MPa. Tailings (Metallurgy). Fly ash. Molina, Luwdig Van B. author. Torio-Kaimo, Lestelle V. faculty adviser. Thesis FI UP UPD DENG-II LG 993.5 2017 E63 L59 Thesis