Abstract
This study elaborates on the destructive and non-destructive test methods in investigation of slope failure. Borehole method is the conventional destructive test method which commonly used to investigate the slope failure. Due to the sensitivity of the slope failure, the non-destructive investigation was conducted using electrical resistivity method. Both methods were used to investigate the slope failure area and to obtain the engineering properties of the study area. Field resistivity test was carried out using ABEM Terrameter SAS400 instrument for resistivity profiling. Borehole drilling works were conducted to provide bore log data. The results of resistivity are illustrated in imaging profile and engineering properties such as soil classifications, moisture content, soil hardness and SPT N-value were analysed from the laboratory tests. In order to develop the relationships of both resistivity and engineering properties, a comparison between soil hardness and resistivity value was determined. The findings of this study show that both methods are reliable to investigate the slope failure via sub-surface profile and engineering properties.
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