STUDY GRADATION AND MOISTURE CONTENT OF SAND EMBANKMENT ON PEAT SUBJECTED VIBRATION POTENTIAL LIQUEFACTION

Quality in Research: International Symposium on Materials, Metallurgy, and Chemical Engineering

材料科学;冶金学;化学工业

Nugroho, Soewignjo Agus^1 ; Putra, Agus Ika^2 ; Yusa, Muhamad^3

Civil Engineering Undergraduate Program, University of Riau, Kampus Bina Widya, Pekanbaru

28293, Indonesia^1

Soil and Rock Mechanics Laboratory, Engineering Faculty Riau University, Subrantas KM 12.5, Pekanbaru

28293, Indonesia^2

Civil Engineering Department, University of Riau, Kampus Bina Widya Subrantas KM 12.5, Faculty Riau University, Pekanbaru, Indonesia^3

关键词: Evaluation of liquefactions;    Excess pore water pressure;    Geotechnical problems;    gradation;    Grain size;    Liquefaction potentials;    Saturated conditions;    settlement;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/316/1/012033/pdf
DOI  :  10.1088/1757-899X/316/1/012033

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In recent years large earthquakes often occur on the island of Sumatra. There is a phenomenon of the damage occurred during the earthquake, one of the effects is a phenomenon of loss of soil strength due to vibration called liquefaction. Some cases of liquefaction occur in some areas in Aceh, Nias Island, Padang and Pariaman. Pekanbaru is located close to the fault area that causes the occurrence of earthquake wave propagation. Pekanbaru are also at risk for geotechnical problems because of earthquake such as liquefaction. Evaluation of liquefaction potential could using by in-situ test and by laboratory test. The laboratory test to evaluation liquefaction potential among which method of experiment shaking table. In this study, liquefaction phenomenon was conducted by creating a physical model of a laboratory scale using a one-way vibration machine, with a review of how big the influence of sand gradation, sand shaped and grain-size, and surface water level in the sand against liquefaction potential. Evaluate of liquefaction potential based on the surface reading of the soil movement, elapsed time for final settlement and an excess pore water dissipation (EPD) during testing. Based on the results of performed test, indicated that fine sand on fully saturated conditions have the potential of maximum settlement for 20.67% and maximum ascend of pore water for 46.67%. This result mean that poorly graded fine sand on fully saturated conditions has more liquefaction potential than medium sand, coarse sand, and well graded sand.