Kekuatan geomekanik batuan granit dan syis di Semenanjung Malaysia

Translated title of the contribution: Geomechanical strength of granites and schists of Peninsular Malaysia

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The geomechanical strength of rock materials plays a significant role in influencing the stability of structures like cut slopes and excavation of opening in rock mass. The strength characteristics of rock mass where these structures are constructed are influenced by both material characteristics and the condition of weathering. This paper presents the results of a systematic research to quantify the mechanical characteristics of fresh as well as slightly weathered granites and schists of Peninsular Malaysia. A total of 1,013 geomechanical strength tests were conducted for both these lithologies for fresh as well as slightly weathered rock materials employing the uniaxial compressive strength test, Brazilian tensile strength as well as the point load strength index test. Statistical analysis of the results at 95 percent confidence level showed that the means of compressive strength for fresh and slightly weathered granites were 113.6±7.0 and 68.9±3.6 MPa while the respective values for fresh and slightly weathered schists were 137.3±9.2 and 84.8±5.1 MPa. Subsequently, the respective mean values of tensile strength for fresh and slightly weathered granites were 8.8±0.4 and 5.3±0.1 MPa while the values of mean for fresh and slightly weathered schists were 17.1±0.9 and 10.5±0.4 MPa, respectively. For the point load strength, the means for fresh and slightly weathered granites were 9.4±0.30 and 5.6±0.10 MPa whereas the respective values for fresh and slightly weathered schists were 10.9±0.42 and 7.0±0.10 MPa. The results of this research revealed that the geomechanical strengths of fresh rock material deteriorated by approximately 1/3 when weathering grade of the rock material reduces to slightly weathered rock materials.

Original languageUndefined/Unknown
Pages (from-to)193-198
Number of pages6
JournalSains Malaysiana
Volume41
Issue number2
Publication statusPublished - Feb 2012

Fingerprint

Rocks
Weathering
Compressive strength
Tensile strength
Lithology
Excavation
Loads (forces)
Statistical methods

Keywords

  • Brazilian tensile strength test
  • Granite
  • Point load strength index test
  • Schist
  • Uniaxial compressive strength test

ASJC Scopus subject areas

  • General

Cite this

Kekuatan geomekanik batuan granit dan syis di Semenanjung Malaysia. / Goh, Thian Lai; Rafek, A. Ghani; Arifin, Mohd Hariri.

In: Sains Malaysiana, Vol. 41, No. 2, 02.2012, p. 193-198.

Research output: Contribution to journalArticle

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