Application Of Surface Wave And Geoelectrical Resistivity Methods In Geotechnical Site Investigation

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dc.contributor.authorKhaizal
dc.date.accessioned2017-11-01T01:22:49Z
dc.date.available2017-11-01T01:22:49Z
dc.date.issued2013-07
dc.description.abstractMany cases of constructions failure have been reported and the prohibitive cost of investigation has also increased due to the unavailability of subsurface information. The physical and mechanical behaviours of geological materials are commonly unpredictable. Lately conventional methods that include: drilling, cone penetration test (CPT), vane shear test, standard penetration test (SPT) have long been directly used in geotechnical site investigation for civil engineering purpose. Yet, in its implementation these methods required more cost compared to the total cost of construction project. Commonly three to five boreholes only, which geotechnical engineers using extrapolate method of boreholes to cover entirely site area. Advanced geophysical technologies are capable of solving these problems. These methods are relative more cost-effective, fast, non invasive and more robust of data acquired. Geophysical methods of surface wave and geo-electrical resistivity imaging methods were carried out at three investigation sites: Merbok Kedah, Balik Pulau and Nibong Tebal Pulau Pinang in Peninsular Malaysia. Continuous fixed roll along method was implemented for two dimensional surface wave field data acquisition. A Wenner-Schlumberger array was selected for geo-electrical resistivity imaging. The results of the study at the three sites showed that for Merbok site, the geophysical methods have successfully delineated residual soil over bedrocks and successfully detected marine sediments over weathered granitic bedrocks at Balik Pulau site as well as also reasonable results of detected low velocity zone at Nibong Tebal site. Drilling of two boreholes which include SPT test were conducted in each of the sites. Comparisons of shear wave velocity and geo-electrical resistivity-value with boreholes data showed good agreement and consistence. Although, geophysical methods showed good results, borehole data even in minimum quantities are still needed in the geotechnical engineering site investigation. The results of the study show that the application of surface wave and geo-electrical resistivity methods can be complement of conventional methods and in turn reduce the cost of site investigation.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/5196
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPhysical and mechanical behaviours ofen_US
dc.subjectgeological materialsen_US
dc.titleApplication Of Surface Wave And Geoelectrical Resistivity Methods In Geotechnical Site Investigationen_US
dc.typeThesisen_US
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