TY - JOUR AU - Rina Yuliet, AU - Abdul Hakam, AU - Mas Mera, AU - Fauzan, PY - 2020/09/30 Y2 - 2024/03/28 TI - UPWARD-SEEPAGE EFFECTS ON BOTH EXCESS PORE-WATER PRESSURE AND SHALLOW-FOUNDATION STABILITY ABOVE SATURATED SAND JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 19 IS - 73 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/1751 SP - 14-19 AB - <p>Upward seepage of water is indicated by the presence of Excess Pore Water Pressure (EPWP),<br>and liquefaction occurs. In this paper, the effects of upward seepage are discussed based on observations of<br>the physical model in the laboratory. The samples of sand are collected from two areas in Padang City,<br>Indonesia. The gradation (sieve analysis) tests are then carried out to obtain sand fraction based on the United<br>Soil Classification System (USCS). The present experimental results show that upward seepage in saturated<br>fine-sand causes an increase in the EPWP so that the effective stress decreases. Consequently, the shallow<br>foundation above it becomes unstable. While the addition of coarse sand on saturated sand can reduce the<br>EPWP so that the effective stress increases and the shallow foundation becomes stable.<br><br></p> ER -