Effective shear strength parameters for remolded granite residual soil in direct shear and triaxial tests

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Abstract

This paper presents a comparison between effective shear strength parameters measured with direct shear and triaxial tests on granite residual soils. Two types of direct shear tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD); and two types of triaxial tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD), were performed on remolded specimens. CU and CD direct shear tests were conducted under the normal stresses of 100, 200, and 300 kN/m2. Meanwhile, CU and CD triaxial tests were carried out with consideration of confining pressure of 490, 590, and 690 kN/m2 with a back pressure of 390 kN/m2. The results show that the effective shear strength parameters for triaxial tests were higher than the direct shear tests. CD triaxial tests gave the highest of effective cohesion, while the highest effective internal friction angle was obtained from CU triaxial tests. Result from CU triaxial test indicated that effective shear strength parameters are close to the results obtained from CU and CD direct shear tests. All clearly showed the same trend in the stress-strain plots and did not have a definitive peak point.

Original languageEnglish
Pages (from-to)4559-4569
Number of pages11
JournalElectronic Journal of Geotechnical Engineering
Volume19 R
Publication statusPublished - 2014

Fingerprint

residual soil
Granite
shear test
triaxial test
Shear strength
shear strength
granite
Soils
Internal friction
confining pressure
parameter
cohesion
friction

Keywords

  • Direct shear test
  • Effective shear strength parameters
  • Granite residual soils
  • Remolded specimen
  • Triaxial test

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

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title = "Effective shear strength parameters for remolded granite residual soil in direct shear and triaxial tests",
abstract = "This paper presents a comparison between effective shear strength parameters measured with direct shear and triaxial tests on granite residual soils. Two types of direct shear tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD); and two types of triaxial tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD), were performed on remolded specimens. CU and CD direct shear tests were conducted under the normal stresses of 100, 200, and 300 kN/m2. Meanwhile, CU and CD triaxial tests were carried out with consideration of confining pressure of 490, 590, and 690 kN/m2 with a back pressure of 390 kN/m2. The results show that the effective shear strength parameters for triaxial tests were higher than the direct shear tests. CD triaxial tests gave the highest of effective cohesion, while the highest effective internal friction angle was obtained from CU triaxial tests. Result from CU triaxial test indicated that effective shear strength parameters are close to the results obtained from CU and CD direct shear tests. All clearly showed the same trend in the stress-strain plots and did not have a definitive peak point.",
keywords = "Direct shear test, Effective shear strength parameters, Granite residual soils, Remolded specimen, Triaxial test",
author = "Rohaya Alias and Anuar Kasa and Taha, {Mohd. Raihan}",
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publisher = "Oklahoma State University",

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TY - JOUR

T1 - Effective shear strength parameters for remolded granite residual soil in direct shear and triaxial tests

AU - Alias, Rohaya

AU - Kasa, Anuar

AU - Taha, Mohd. Raihan

PY - 2014

Y1 - 2014

N2 - This paper presents a comparison between effective shear strength parameters measured with direct shear and triaxial tests on granite residual soils. Two types of direct shear tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD); and two types of triaxial tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD), were performed on remolded specimens. CU and CD direct shear tests were conducted under the normal stresses of 100, 200, and 300 kN/m2. Meanwhile, CU and CD triaxial tests were carried out with consideration of confining pressure of 490, 590, and 690 kN/m2 with a back pressure of 390 kN/m2. The results show that the effective shear strength parameters for triaxial tests were higher than the direct shear tests. CD triaxial tests gave the highest of effective cohesion, while the highest effective internal friction angle was obtained from CU triaxial tests. Result from CU triaxial test indicated that effective shear strength parameters are close to the results obtained from CU and CD direct shear tests. All clearly showed the same trend in the stress-strain plots and did not have a definitive peak point.

AB - This paper presents a comparison between effective shear strength parameters measured with direct shear and triaxial tests on granite residual soils. Two types of direct shear tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD); and two types of triaxial tests: 1. consolidated undrained (CU), and 2. consolidated drained (CD), were performed on remolded specimens. CU and CD direct shear tests were conducted under the normal stresses of 100, 200, and 300 kN/m2. Meanwhile, CU and CD triaxial tests were carried out with consideration of confining pressure of 490, 590, and 690 kN/m2 with a back pressure of 390 kN/m2. The results show that the effective shear strength parameters for triaxial tests were higher than the direct shear tests. CD triaxial tests gave the highest of effective cohesion, while the highest effective internal friction angle was obtained from CU triaxial tests. Result from CU triaxial test indicated that effective shear strength parameters are close to the results obtained from CU and CD direct shear tests. All clearly showed the same trend in the stress-strain plots and did not have a definitive peak point.

KW - Direct shear test

KW - Effective shear strength parameters

KW - Granite residual soils

KW - Remolded specimen

KW - Triaxial test

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