Engineering Geology Research Group
Dr. Ng Tham Fatt
Room No : GB 214 (New Building)
Members 1. Prof. Dr Ismail Yusoff 2. Dr. Ros Fatihah Muhammad
Collaborators 1. Dato. Prof. Dr. Ir. Roslan Hashim, Faculty of Engineering, UM 2. Dr. Aishah Binti Abu Bakar, Facukty of Engineering, UM Research direction
Geotechnical properties of the earth materials of Malaysia are characterized for effective and economic earth works for development purposes and optimal use of rocks as construction aggregates. Research involves field investigation and sampling of earth materials and the laboratory determinations of their physical, mineralogical and mechanical properties. The research group is also working on the assessment of geological hazards such as landslides, floods and sinkholes, and discontinuity surveys of rock slopes using LiDAR.
Research Areas 1. Geotechnical properties of earth materials in Malaysia 2. Stability of natural slopes and slope cuts in Malaysia 3. Assessment of geological hazards 4. Characterization and stabilization of peat
Research Accomplishments and Findings
Earth materials in different parts of Malaysia have been defined and characterized in terms of their morphological features and geotechnical properties, allowing for their classification in terms of excavability. Slope failures at several sites in Malaysia have been investigated, allowing understanding of the causes of failures and the recommendation of appropriate remedial measures. Peat deposits in Kota Samarahan have been mapped, characterized and classified. The strength of the peat can be improved through stabilization using Portland cement and fillers.
A. Ongoing PhD:
1. Wong Mum Keng (SHC 120070): Genomic study of soils derived from sedimentary rocks in Malaysia
B. Graduated PhD:
1. Mohammadreza Gharibreza (SHC080044): Sedimentation rates in Bera Lake and soil redistribution at its catchment using radioisotopes.
2. Mohamad Tarmizi Mohamad Zulkifley (SHB100011): Occurrence and geotechnical engineering properties of peat and soft soils (and stabilized peat and soft soils) in the Kota Samarahan Area, West Sarawak.
3. Nkpadobi Johnbosco Ikenna (SHC100016): Geotechnical properties of meta-sedimentary bedrock and the stability of cut slopes along the Pos Selim Highway in Perak State, Malaysia.
D. ISI publications:
Mohamad Tarmizi Mohamad Zulkifley, Ng T.F., Zainey Konjing, Muhammad Aqeel Ashraf, (2016): Development of Tropical Lowland Peat Forest Phasic Community Zonations in the Kota Samarahan-Asajaya area, West Sarawak, Malaysia. Earth Sciences Research Journal, 20(1), 1-10.
Nkpadobi, J. I., Raj, J.K. & Ng. T.F. (2016): Classification of cut slopes in weathered meta-sedimentary bedrocks. Earth Sciences Research Journal, 20(3), doi: 10.15446/esrj.v20n2.52781
Nkpadobi, J. I., Raj J. K. & Ng T. F. (2015): Failure mechanisms in weathered meta-sedimentary rocks. Environmental Earth Sciences. 73 (8), 4405-4418.
Mohamad Tarmizi M. Z., Ng, T.F., Abdullah, W.H. John Kuna Raj, Shuib, M.K., Ghani, A.A., Ahmad Farid, Paramananthan, S., Muhammad Aqeel Ashraf, 2015. Geochemical characteristics of a tropical lowland peat dome in the Kota Samarahan-Asajaya area, West Sarawak, Malaysia. Environmental Earth Sciences, 74(4), 1443-1458.
Mohd. Tarmizi Mohd. Zulkifley, Ng T.F, Raj, J.K., Roslan Hashim & Ashraf, M.A. (2014): Effects of lateral variation in vegetation and Basin "dome" shape on Tropical lowland peat stabilisation in the Kota Samarahan-Asajaya area, West Sarawak, Malaysia. Acta Geologica Sinica (English Edition), v.88, No.3, p.894-914.
Dr. Mohamad Tarmizi Bin Mohamad Zulkifley, Ng T.F., Raj, J.K., Roslan Hashim, Ahmad Farid Abu Bakar, S. Paramathan & Muhammad Aqeel Ashraf (2013): A review of the stabilization of tropical lowland peats. Bull. Engng. Geol. and the Environment 73(3), 733-746.
Dr. Mohamad Tarmizi Bin Mohamad Zulkifley, Ng. T.F., Raj, J.K., Roslan Hashim, Dr. Azman Ghani, Mustaffa Kamal Shuib & (2013): Definitions and engineering classification of tropical lowland peats. Muhammad Aqeel Ashraf Bull. Engng. Geol. & the Environment. 72, 547–553
Ng T.F., Raj, J.K. & Azman A. Ghani (2013): Potential alkali-reactivity of granite aggregates in the Bukit Lagong area, Selangor, Peninsular Malaysia. Sains Malaysiana, 42(6), 773-781.
Mohd. Tarmizi Mohd. Zulkifley, Ng, T.F., Raj, J.K., Wan Hasiah Wan Abdullah & Ashraf, M.A. (2013): Distribution, classification, petrological and related geochemical (SRA) characteristics of a tropical lowland peat dome in the Kota Samarahan-Asajaya area, West Sarawak, Malaysia. Central European Jour. Geosciences, 5(2), 285-314.
Gharibreza, M., Raj, J.K., Ismail Yusoff, Zainuddin Othman, Wan Zakaria Wan Muhamad Tahir & Ashraf, M.A. (2013): Land use changes and soil redistribution estimation using 137Cs in the tropical Bera Lake catchment, Malaysia. Soil & Tillage Research, v.131, p.1-10.
Gharibreza, M., Raj, J.K., Ismail Yusoff, Zainuddin Othman, Wan Zakaria Wan Muhamad Tahir & Ashraf, M.A. (2013): Sedimentation rates in Bera Lake (Peninsular Malaysia) using 210Pb and 137Cs radioisotopes. Geosciences Jour., 01/2013.
Gharibreza, M., Raj, J.K., Ismail Yusoff & Ashraf, M.A. (2013): An evaluation of Bera Lake (Malaysia) sediment contamination using sediment quality guidelines. Indian Jour. Chemistry. 01/2013.
Gharibreza, M., Raj, J.K., Ismail Yusoff, Zainuddin Othman, Wan Zakaria Wan Muhamad Tahir & Ashraf, M.A. (2013): Historical variations of Bera Lake (Malaysia) sediments geochemistry using radio-isotopes and sediment quality indices. Jour. Radioanalytical & Nuclear Chemistry, v.295 (3), p.1715-1730.
Gharibreza, M., Raj, J.K., Ismail Yusoff, Zainuddin Othman, Wan Zakaria Wan Muhamad Tahir & Ashraf, M.A. (2013): Effects of agricultural projects on nutrient levels at Bera Lake (Tasek Bera), Peninsular Malaysia. Agricultre, Ecosystems & Environment. v.165, p.19-27.
E. Non-ISI publications: Raj, J.K. (2010): Soil moisture retention characteristics of earth materials in the weathering profile over a porphyritic biotite granite. Am. Jour. Geosciences, v.1, No.1, p.12-20.
Raj, J.K. & J.I. Nkpadobi (2008): Shear strength along foliation planes in meta-rhyolitic tuff from the Dinding Schist, Kuala Lumpur. Newsletter, Geol. Soc. Malaysia. V.34, p.151-155.
Raj, J.K. & Ahmad Nazmi Mohamed Ali (2007): Point load strength of contact metamorphic rocks from the Batu Melintang area, Kelantan Darul Naim. Newsletter, Geol. Soc. Malaysia, v.33, p.201-209.
Nkpadobi, J.I., Raj, J.K. & Ng, T.F., (2015). Influence of discontinuities on the stability of cut slopes in weathered meta-sedimentary rocks. Geomechanics and Geoengineering, 10(4), 290-302.
Ng, T.F., Vijayan, V.R., Chow, W.S. & Abdullah Sulaiman, (2008). Assessment of oil spill vulnerability of Southwest Pulau Pinang shoreline. Geol. Soc. Malaysia Bull. 54:123-131.
Ng, T.F. & Yeap, E.B., (2007). Potential alkali-silica reaction in aggregate of deformed granite. Geol. Soc. Malaysia Bull. 53:81-88.