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A novel technique to predict soil deformation

Madun, Aziman and Ghazali, Mohd Imran and Zainorabidin, Adnan and KSM Kader Ibrahim, Babul Salam and Yusoff, Nor Azizi and Ahmad Tajudin, Saiful Azhar and Kamarudin, Ahmad Fahmy and Joret, Ariffuddin and Nayan, Nafarizal and Zahari, Muhammad Nur Hidayat and Zainuddin, Siti Zuraidah (2014) A novel technique to predict soil deformation. Other thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

The geophysical method such as seismic surface wave offered advantages in the geotechnical site investigation via non-destructive testing. The geophysical methods have been widely used to detect any spatial material property changes which cannot be seen using naked eyes of human. Therefore, this research focused on a development of the seismic wave technique of surface wave with in situ non-destructive testing. The method presented in this research is by obtaining the surface wave phase velocity of a material in order to develop the graph of phase velocity versus wavelength. These researches utilize two different seismic surface wave techniques in one seismic complete system. The two seismic surface wave technique used is the Spectral Analysis Surface Wave (SASW) and Continuous Surface Wave (CSW). This research explores the effect of the relationship between source and receiver distance for both methods. The practical testing has been conducted on known materials; where the CSW system has been used on a concrete mortar. The ratio for this concrete mortar is 1 : 15; cement and sand and lm x Im x 1.5m for its dimension. Meanwhile, the SASW system has been used to test for soft soil conducted at RECESS soft soil test site in UTHM. The CSW method is based on generating a mono-frequency source using piezoelectric transducers in order to produce a seismic energy. For SASW method an impact source using a hammer is used to generate the seismic energy. The seismic recording used in this research includes a pair of accelerometer sensors and National Instrument data acquisition system. The collected data were stored, and processed after the completion of a data acquisition session. The portable personal computer with the developed Matlab programmed has been used to control the SASW and CSW system and the data acquisition during site investigation. The experimental result for phase velocity obtained in this research for concrete mortar is average at 374.29 m/s between 0.5m to 0.6m wavelength. Meanwhile, for SASW system the phase velocity of soil at a wavelength of 0.34m to 3.5m is average at 75.03 mls.

Item Type: Thesis (Other)
Subjects: Q Science > QE Geology
Depositing User: Normajihan Abd. Rahman
Date Deposited: 12 May 2015 07:47
Last Modified: 12 May 2015 07:47
URI: http://eprints.uthm.edu.my/id/eprint/6913
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