Laboratory Test Methods for Shear Strength Behavior of Unsaturated Soils Under Suction Control, Using Triaxial Apparatus

Saffari, Pooya; Noor, Mohd Jamaludin Md; Hadi, Basharudin Abdul; Motamedi, Shervin

doi:10.1007/978-981-287-290-6_50

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…In terms of partially saturated condition a modified double wall triaxial apparatus with suction control was used. The suction of 70 kPa (residual suction obtained from SWCC test) was applied to the specimen using axis translation technique [14]. The triaxial test has been conducted at effective stresses of 50 kPa, 100 kPa, 200 kPa and 300 kPa.…”

Section: Triaxial Test Resultsmentioning

confidence: 99%

“…Later on, it was reported that there is a unique relationship between the minimum mobilized friction angle, Ø' min mob , and axial strain, ε a [14] . Applying the deviator stress rotates the mobilized shear strength into a new position regardless of the value of effective or net stress in accordance with axial strain either for saturation or unsaturation condition.…”

Section: Rotational Multiple Yield Surface Framework (Rmysf)mentioning

confidence: 99%

“…The authors claimed that this relationship is able to predict the stress-strain response of a specific soil at every desired net stress or effective stress. Equation 1, was introduced by [14] in order to obtain the best fit curve for the minimum mobilized friction angle, Ø' min mob and axial strain, ε a .…”

Section: Rotational Multiple Yield Surface Framework (Rmysf)mentioning

confidence: 99%

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Stress-Strain response of Malaysian granitic residual soil grade V, according to Rotational Multiple Yield Surface Framework

2016

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Abstract. In soil mechanics characterizing the soil volume change behavior is based on the effective stress concept. Conventional soil settlement models which have been developed by this principle, are empirical in nature and being verified against experimental or field observations. However, they are not still able to explain and formulate some unusual soil volume change behaviors such as wetting collapse by this concept. The consequence of shear strength in the interaction of effective stress should be integrated into volume change frameworks in such cases in order to puzzle out these weird behaviors. The principle has been incorporated in an anisotropic soil settlement model know as Rotational Multiple Yield Surface Framework (RMYSF). The framework has been developed from the standpoint of the soil stress-strain response within anisotropic stress condition. The anisotropic soil volume change behavior is described from the interaction between applied stress (presented by the Mohr-Coulomb circle) and shear strength (in terms of curved-surface mobilized shear strength envelope). The applicability of the model has been examined for limestone gravel from the United Kingdom and granitic residual soil grade VI from Kuala Kuba Baru, Malaysia before, however still needs to be tested for another kind of soils. In this paper, a series of triaxial tests were conducted on Malaysian granitic residual soil grade V, in saturated and unsaturated condition. The stress-strain curves and volume change behavior of the soil were obtained from laboratory test results. Besides that, the stress-strain response of the soil has been predicted using RMYSF framework. The predicted stress-strain curves were compared with the test result and the accuracy of the framework was examined. The obtained and predicted curves had a fairly good match.

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Section: Triaxial Test Resultsmentioning

confidence: 99%

Section: Rotational Multiple Yield Surface Framework (Rmysf)mentioning

confidence: 99%

Section: Rotational Multiple Yield Surface Framework (Rmysf)mentioning

confidence: 99%

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Stress-Strain response of Malaysian granitic residual soil grade V, according to Rotational Multiple Yield Surface Framework

2016

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Collapse behavior of unsaturated remolded granitic residual soil

Saffari

Nie

Noor

et al. 2020

Bull Eng Geol Environ

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Shear Strength of Unsaturated Malaysian Granitic Residual Soil

Saffari

Noor

Ashaari

et al. 2019

Journal of Testing and Evaluation

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This study aims to understand the shear strength of unsaturated Malaysian granitic residual soil. The soil was obtained from Kuala Klawang, Negeri Sembilan, Malaysia. A pressure plate was used for obtaining soil-water characteristic curves under zero net confining pressure. Multistage consolidated drained triaxial tests were carried out on both saturated and unsaturated compacted specimens at a constant strain rate. The experimental data of the saturated and unsaturated shear strength of the soil were fitted with a comprehensive constitutive shear strength model that represents both linear and nonlinear shear strength behaviors, with respect to suction and net stress or effective stress for unsaturated and saturated conditions, respectively.

show abstract

Laboratory Test Methods for Shear Strength Behavior of Unsaturated Soils Under Suction Control, Using Triaxial Apparatus

Cited by 3 publications

References 25 publications

Stress-Strain response of Malaysian granitic residual soil grade V, according to Rotational Multiple Yield Surface Framework

Stress-Strain response of Malaysian granitic residual soil grade V, according to Rotational Multiple Yield Surface Framework

Collapse behavior of unsaturated remolded granitic residual soil

Shear Strength of Unsaturated Malaysian Granitic Residual Soil

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