Cover Image

Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah

The research was inspired by series of geological studies on Semanggol formation found exposed at North Perak, South Kedah and North Kedah. The chert unit comprised interbedded chert-shale rocks are the main lithologies sampled in a small-scale outcrop of Pokok Sena area. Black shale materials were...

Full description

Saved in:
Bibliographic Details
Main Authors: Ahmad, N.R., Jamin, N.H.
Format: Article
Published: Institute of Physics Publishing 2018
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046094482&doi=10.1088%2f1755-1315%2f140%2f1%2f012117&partnerID=40&md5=61fb4e512e44e153190c5256f086e8a8
http://eprints.utp.edu.my/21612/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utp.eprints.21612
record_format eprints
spelling my.utp.eprints.216122018-10-23T01:54:09Z Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah Ahmad, N.R. Jamin, N.H. The research was inspired by series of geological studies on Semanggol formation found exposed at North Perak, South Kedah and North Kedah. The chert unit comprised interbedded chert-shale rocks are the main lithologies sampled in a small-scale outcrop of Pokok Sena area. Black shale materials were also observed associated with these sedimentary rocks. The well-known characteristics of shale that may swell when absorb water and leave shrinkage when dried make the formation weaker when load is applied on it. The presence of organic materials may worsen the condition apart from the other factors such as the history of geological processes and depositional environment. Thus, this research is important to find the preliminary relations of the geotechnical properties of soft rocks and the geological reasoning behind it. Series of basic soil tests and 1-D compression tests were carried out to obtain the soil parameters. The results obtained gave some preliminary insight to mechanical behaviour of these two samples. The black shale and weathered interbedded chert-shale were classified as sandy-clayey-SILT and clayey-silty-SAND respectively. The range of specific gravity of black shale and interbedded chert/shale 2.3 - 2.6 and fall in the common range of shale and chert specific gravity value. In terms of degree of plasticity, the interbedded chert/shale samples exhibit higher plastic degree compared to the black shale samples. Results from oedometer tests showed that black shale samples had higher overburden pressure (Pc) throughout its lifetime compare to weathered interbedded chert-shale, however the compression index (Cc) of black shale were 0.15 - 0.185 which was higher than that found in interbedded chert-shale. The geotechnical properties of these two samples were explained in correlation with their provenance and their history of geological processes involved which predominantly dictated the mechanical behaviour of these two samples. © 2018 Published under licence by IOP Publishing Ltd. Institute of Physics Publishing 2018 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046094482&doi=10.1088%2f1755-1315%2f140%2f1%2f012117&partnerID=40&md5=61fb4e512e44e153190c5256f086e8a8 Ahmad, N.R. and Jamin, N.H. (2018) Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah. IOP Conference Series: Earth and Environmental Science, 140 (1). http://eprints.utp.edu.my/21612/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The research was inspired by series of geological studies on Semanggol formation found exposed at North Perak, South Kedah and North Kedah. The chert unit comprised interbedded chert-shale rocks are the main lithologies sampled in a small-scale outcrop of Pokok Sena area. Black shale materials were also observed associated with these sedimentary rocks. The well-known characteristics of shale that may swell when absorb water and leave shrinkage when dried make the formation weaker when load is applied on it. The presence of organic materials may worsen the condition apart from the other factors such as the history of geological processes and depositional environment. Thus, this research is important to find the preliminary relations of the geotechnical properties of soft rocks and the geological reasoning behind it. Series of basic soil tests and 1-D compression tests were carried out to obtain the soil parameters. The results obtained gave some preliminary insight to mechanical behaviour of these two samples. The black shale and weathered interbedded chert-shale were classified as sandy-clayey-SILT and clayey-silty-SAND respectively. The range of specific gravity of black shale and interbedded chert/shale 2.3 - 2.6 and fall in the common range of shale and chert specific gravity value. In terms of degree of plasticity, the interbedded chert/shale samples exhibit higher plastic degree compared to the black shale samples. Results from oedometer tests showed that black shale samples had higher overburden pressure (Pc) throughout its lifetime compare to weathered interbedded chert-shale, however the compression index (Cc) of black shale were 0.15 - 0.185 which was higher than that found in interbedded chert-shale. The geotechnical properties of these two samples were explained in correlation with their provenance and their history of geological processes involved which predominantly dictated the mechanical behaviour of these two samples. © 2018 Published under licence by IOP Publishing Ltd.
format Article
author Ahmad, N.R.
Jamin, N.H.
spellingShingle Ahmad, N.R.
Jamin, N.H.
Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah
author_facet Ahmad, N.R.
Jamin, N.H.
author_sort Ahmad, N.R.
title Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah
title_short Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah
title_full Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah
title_fullStr Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah
title_full_unstemmed Preliminary view of geotechnical properties of soft rocks of Semanggol formation at Pokok Sena, Kedah
title_sort preliminary view of geotechnical properties of soft rocks of semanggol formation at pokok sena, kedah
publisher Institute of Physics Publishing
publishDate 2018
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046094482&doi=10.1088%2f1755-1315%2f140%2f1%2f012117&partnerID=40&md5=61fb4e512e44e153190c5256f086e8a8
http://eprints.utp.edu.my/21612/
_version_ 1738656313826607104
score 13.211869

Similar Items