### Abstract

Shear strength parameters such as friction angle of discontinuity surfaces of rock are among the essential data for the design of rock engineering structures like underground excavation and cut slopes. Constant normal load direct shear test has been employed on artificially sawn surfaces of fresh and slightly weathered granite to determine the basic friction angle of the discontinuity plane surfaces. The granite samples were collected from Kajang Rock Quarry, Semenyih, Ulu Langat, Selangor, Kajang Silk Highway (km 14.6), Selangor and Pos Selim-Kampung Raja road (km 30-29), Cameron Highland, Pahang/Perak and JKR Quarry Bukit Penggorak, Kuantan, Pahang. A total of 84 direct shear tests were carried out, comprising 65 and 19 tests on fresh and slightly weathered granite, respectively. For fresh granite, the basic friction angle is 42° ± 0.6° with standard deviation of 2.26 and coefficient of determination, R ^{2}of 0.98. For slightly weathered granite, the basic friction angle is 38° ±1.9° with standard deviation of 3.99 and coefficient of determination, R ^{2} of 0.97. These values are considerably higher than the often assumed value of 30°-35° for fresh granite.

Original language | Undefined/Unknown |
---|---|

Pages (from-to) | 419-423 |

Number of pages | 5 |

Journal | Sains Malaysiana |

Volume | 40 |

Issue number | 5 |

Publication status | Published - May 2011 |

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### Keywords

- Basic friction angle
- Direct shear test
- Granite

### ASJC Scopus subject areas

- General

### Cite this

*Sains Malaysiana*,

*40*(5), 419-423.

**Ujian ricih terus permukaan satah ketakselanjaran granit.** / Goh, Thian Lai; Rafek, A. Ghani; Ariffin, M. Hariri; Baizurayunus, N.

Research output: Contribution to journal › Article

*Sains Malaysiana*, vol. 40, no. 5, pp. 419-423.

}

TY - JOUR

T1 - Ujian ricih terus permukaan satah ketakselanjaran granit

AU - Goh, Thian Lai

AU - Rafek, A. Ghani

AU - Ariffin, M. Hariri

AU - Baizurayunus, N.

PY - 2011/5

Y1 - 2011/5

N2 - Shear strength parameters such as friction angle of discontinuity surfaces of rock are among the essential data for the design of rock engineering structures like underground excavation and cut slopes. Constant normal load direct shear test has been employed on artificially sawn surfaces of fresh and slightly weathered granite to determine the basic friction angle of the discontinuity plane surfaces. The granite samples were collected from Kajang Rock Quarry, Semenyih, Ulu Langat, Selangor, Kajang Silk Highway (km 14.6), Selangor and Pos Selim-Kampung Raja road (km 30-29), Cameron Highland, Pahang/Perak and JKR Quarry Bukit Penggorak, Kuantan, Pahang. A total of 84 direct shear tests were carried out, comprising 65 and 19 tests on fresh and slightly weathered granite, respectively. For fresh granite, the basic friction angle is 42° ± 0.6° with standard deviation of 2.26 and coefficient of determination, R 2of 0.98. For slightly weathered granite, the basic friction angle is 38° ±1.9° with standard deviation of 3.99 and coefficient of determination, R 2 of 0.97. These values are considerably higher than the often assumed value of 30°-35° for fresh granite.

AB - Shear strength parameters such as friction angle of discontinuity surfaces of rock are among the essential data for the design of rock engineering structures like underground excavation and cut slopes. Constant normal load direct shear test has been employed on artificially sawn surfaces of fresh and slightly weathered granite to determine the basic friction angle of the discontinuity plane surfaces. The granite samples were collected from Kajang Rock Quarry, Semenyih, Ulu Langat, Selangor, Kajang Silk Highway (km 14.6), Selangor and Pos Selim-Kampung Raja road (km 30-29), Cameron Highland, Pahang/Perak and JKR Quarry Bukit Penggorak, Kuantan, Pahang. A total of 84 direct shear tests were carried out, comprising 65 and 19 tests on fresh and slightly weathered granite, respectively. For fresh granite, the basic friction angle is 42° ± 0.6° with standard deviation of 2.26 and coefficient of determination, R 2of 0.98. For slightly weathered granite, the basic friction angle is 38° ±1.9° with standard deviation of 3.99 and coefficient of determination, R 2 of 0.97. These values are considerably higher than the often assumed value of 30°-35° for fresh granite.

KW - Basic friction angle

KW - Direct shear test

KW - Granite

UR - http://www.scopus.com/inward/record.url?scp=79957992244&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79957992244&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:79957992244

VL - 40

SP - 419

EP - 423

JO - Sains Malaysiana

JF - Sains Malaysiana

SN - 0126-6039

IS - 5

ER -