Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Investigation of Shear Strength of Prefailed Overconsolidated Clayey Slopes by Fast Shearing
Clayey soils might be investigated since the days of the beginning of the geotechnical science. The behaviour of the clays under different loading and environmental conditions is still under investigation. This study is dealing with the pre-failed soil slopes consist of high and low plastic overconsolidated clays. After failure of a slope, the thought of “soil strength reduces its residual strength” has found general acceptance and residual strength is applied to the calculations of the stability of pre-failed slopes. At this point, the question comes to the minds; if the slope formed with clayey soil or more specifically, high or low plastic overconsolidated clays, what would be the difference in shear behaviour after failure? That is the main point of this study. In the tests, Kaolin clay is used for low plastic samples and 50% Kaolin + 50% Bentonite in weight are used for high plastic clay samples. As testing steps; first, samples are over-consolidated, then sheared until their residual strengths and finally tested after a certain time at the highest rate of shearing of the apparatus. At the end of the 30 (thirty) tests, the results are obtained as expected. High plastic samples could serve lower strength values under the same normal stress; however, the interesting result was about the difference in values between the residual strength and the shear strength at a higher rate of shearing.
Investigation of Shear Strength of Prefailed Overconsolidated Clayey Slopes by Fast Shearing
Clayey soils might be investigated since the days of the beginning of the geotechnical science. The behaviour of the clays under different loading and environmental conditions is still under investigation. This study is dealing with the pre-failed soil slopes consist of high and low plastic overconsolidated clays. After failure of a slope, the thought of “soil strength reduces its residual strength” has found general acceptance and residual strength is applied to the calculations of the stability of pre-failed slopes. At this point, the question comes to the minds; if the slope formed with clayey soil or more specifically, high or low plastic overconsolidated clays, what would be the difference in shear behaviour after failure? That is the main point of this study. In the tests, Kaolin clay is used for low plastic samples and 50% Kaolin + 50% Bentonite in weight are used for high plastic clay samples. As testing steps; first, samples are over-consolidated, then sheared until their residual strengths and finally tested after a certain time at the highest rate of shearing of the apparatus. At the end of the 30 (thirty) tests, the results are obtained as expected. High plastic samples could serve lower strength values under the same normal stress; however, the interesting result was about the difference in values between the residual strength and the shear strength at a higher rate of shearing.
Investigation of Shear Strength of Prefailed Overconsolidated Clayey Slopes by Fast Shearing
Gültekin Kırım (Autor:in) / Alper Cebeci (Autor:in)
2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
pre-failed slope , high and low plastic clayey soil , residual and shear strength , overconsolidation , slope stability , fast shearing test , önceden kaymış şev , yüksek ve alçak plastiliteli killi toprak , reziduel ve kesme kuvveti , aşırı konsolide , şev kararlılığı , hızlı kesme testi , Agriculture , S , Agriculture (General) , S1-972 , Technology (General) , T1-995
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The residual stress of a thawed overconsolidated clayey soil
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Microstructure of Overconsolidated Clays and Its Shearing Behavior During Direct Shear Tests
| British Library Online Contents | 1994