A geotechnical engineering characterisation of interbedded Kenny Hill weak rock in Malaysia wet tropical environment

Zainab Mohamed, Abd Ghani Rafek, Ibrahim Komoo

Research output: Contribution to journalArticle

Abstract

An attempt to quantify the geotechnical properties of interbedded Kenny Hill weak rock mass requires an integrated knowledge on the principle of rock and soil mechanics. A Kenny Hill formation is widely found within the vicinity of Kuala Lumpur, which is dominated by interbedding of sandstone and shale. An engineering field mapping was carried out to document the mode of physical deterioration of both rock materials as a unit rock mass subjected to Malaysian wet tropical environment. A systematic approach of the method of characterisation was developed for sandstone and shale that was known as a weak rock. A series of laboratory index tests were proposed for quantifying the qualitative deterioration of these two rock materials. Sandstone and shale characterisation by hardness, texture, jar slake and slake durability were carried out followed by a uniaxial compressive strength and a point load tests. From the extensive effort it can be summarised that as for weak rock, the method of geotechnical characterisation should be best carried out using test procedure that require the least sample preparation. This paper highlighted the outcome of a systematic design approach adopted to meet the objective. A comparative study showed that the geotechnical properties of these two rocks are extremely different forming a heterogeneous rock mass. Thus more than one method of testing with modified approach is required in order to obtain a higher degree of laboratory results.

Original languageEnglish
JournalElectronic Journal of Geotechnical Engineering
Volume11 C
Publication statusPublished - 2006

Fingerprint

weak rock
Geotechnical engineering
tropical environment
geotechnical engineering
Rocks
shale
rock
geotechnical property
sandstone
Shale
Sandstone
soil mechanics
rock mechanics
Deterioration
sample preparation
durability
compressive strength
hardness
comparative study
Soil mechanics

Keywords

  • Engineering testing
  • Interbedded rock mass
  • Kenny Hill formation
  • Weak rock

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

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title = "A geotechnical engineering characterisation of interbedded Kenny Hill weak rock in Malaysia wet tropical environment",
abstract = "An attempt to quantify the geotechnical properties of interbedded Kenny Hill weak rock mass requires an integrated knowledge on the principle of rock and soil mechanics. A Kenny Hill formation is widely found within the vicinity of Kuala Lumpur, which is dominated by interbedding of sandstone and shale. An engineering field mapping was carried out to document the mode of physical deterioration of both rock materials as a unit rock mass subjected to Malaysian wet tropical environment. A systematic approach of the method of characterisation was developed for sandstone and shale that was known as a weak rock. A series of laboratory index tests were proposed for quantifying the qualitative deterioration of these two rock materials. Sandstone and shale characterisation by hardness, texture, jar slake and slake durability were carried out followed by a uniaxial compressive strength and a point load tests. From the extensive effort it can be summarised that as for weak rock, the method of geotechnical characterisation should be best carried out using test procedure that require the least sample preparation. This paper highlighted the outcome of a systematic design approach adopted to meet the objective. A comparative study showed that the geotechnical properties of these two rocks are extremely different forming a heterogeneous rock mass. Thus more than one method of testing with modified approach is required in order to obtain a higher degree of laboratory results.",
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author = "Zainab Mohamed and Rafek, {Abd Ghani} and Ibrahim Komoo",
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AU - Mohamed, Zainab

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N2 - An attempt to quantify the geotechnical properties of interbedded Kenny Hill weak rock mass requires an integrated knowledge on the principle of rock and soil mechanics. A Kenny Hill formation is widely found within the vicinity of Kuala Lumpur, which is dominated by interbedding of sandstone and shale. An engineering field mapping was carried out to document the mode of physical deterioration of both rock materials as a unit rock mass subjected to Malaysian wet tropical environment. A systematic approach of the method of characterisation was developed for sandstone and shale that was known as a weak rock. A series of laboratory index tests were proposed for quantifying the qualitative deterioration of these two rock materials. Sandstone and shale characterisation by hardness, texture, jar slake and slake durability were carried out followed by a uniaxial compressive strength and a point load tests. From the extensive effort it can be summarised that as for weak rock, the method of geotechnical characterisation should be best carried out using test procedure that require the least sample preparation. This paper highlighted the outcome of a systematic design approach adopted to meet the objective. A comparative study showed that the geotechnical properties of these two rocks are extremely different forming a heterogeneous rock mass. Thus more than one method of testing with modified approach is required in order to obtain a higher degree of laboratory results.

AB - An attempt to quantify the geotechnical properties of interbedded Kenny Hill weak rock mass requires an integrated knowledge on the principle of rock and soil mechanics. A Kenny Hill formation is widely found within the vicinity of Kuala Lumpur, which is dominated by interbedding of sandstone and shale. An engineering field mapping was carried out to document the mode of physical deterioration of both rock materials as a unit rock mass subjected to Malaysian wet tropical environment. A systematic approach of the method of characterisation was developed for sandstone and shale that was known as a weak rock. A series of laboratory index tests were proposed for quantifying the qualitative deterioration of these two rock materials. Sandstone and shale characterisation by hardness, texture, jar slake and slake durability were carried out followed by a uniaxial compressive strength and a point load tests. From the extensive effort it can be summarised that as for weak rock, the method of geotechnical characterisation should be best carried out using test procedure that require the least sample preparation. This paper highlighted the outcome of a systematic design approach adopted to meet the objective. A comparative study showed that the geotechnical properties of these two rocks are extremely different forming a heterogeneous rock mass. Thus more than one method of testing with modified approach is required in order to obtain a higher degree of laboratory results.

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