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Application of electrical resistivity method to detect deep cracks in unsaturated residual soil slope

Suryo, Eko Andi, Gallage, Chaminda, Trigunarsyah, Bambang, Mochtar, Indrasurya B., & Soemitro, Ria (2011) Application of electrical resistivity method to detect deep cracks in unsaturated residual soil slope. In Mairaing, Warakorn, Jotisankasa, Apiniti, & Sawangsuriya, Auckpath (Eds.) Proceedings of AP-UNSAT 2011: 5th Asia-Pasific Conference on Unsaturated Soils, Geotechnical Engineering Research and Development Center (GERD) Department of Civil Engineering, Faculty of Engineering Kasetsart University, Thailand, Dusit Thani Pattaya Hotel, Pattaya, pp. 1-6.

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Abstract

Crack is a significant influential factor in soil slope that could leads to rainfall-induced slope instability. Existence of cracks at soil surface will decrease the shear strength and increase the hydraulic conductivity of soil slope. Although previous research has shown the effect of surface-cracks in soil stability, the influence of deep-cracks on soil stability is still unknown. The limited availability of deep crack data due to the difficulty of effective investigate methods could be one of the obstacles. Current technology in electrical resistivity can be used to detect deep-cracks in soil. This paper discusses deep cracks in unsaturated residual soil slopes in Indonesia using electrical resistivity method. The field investigation such as bore hole and SPT tests was carried out at multiple locations in the area where the electrical resistivity testing have been conducted. Subsequently, the results from bore-hole and SPT test were used to verify the results of the electrical resistivity test. This study demonstrates the benefits and limitations of the electrical resistivity in detecting deep-cracks in a residual soil slopes.

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ID Code: 44151
Item Type: Conference Paper
Keywords: Residual Soil Slope, Deep Cracks, Electrical Resistivity Method, SPT N-value, Bore-hole Data
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Civil Geotechnical Engineering (090501)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2011 [please consult the authors]
Deposited On: 24 Aug 2011 09:25
Last Modified: 18 Nov 2011 04:48

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