Norlia, Mohamad Ibrahim, Dr.
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/39896
This page provides access to scholarly publication by UniMAP Faculty members and researchers2024-03-28T13:07:28ZStudy on Characteristics of Lightweight Aggregate Concrete Made From Foam and Ordinary Portland Cement
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/68511
Study on Characteristics of Lightweight Aggregate Concrete Made From Foam and Ordinary Portland Cement
Norlia, Mohamad Ibrahim; K.N., Ismail; Shamshinar, Salehuddin; ‪Roshazita, Che Amat‬; Abdul Rahim, Abdul Razak; Zaity Syazwani, Mohd Odli
The production and characteristic of lightweight bubble aggregates (LBA) are presented in this paper. The LBA are produced by
mixing between the foam and ordinary Portland cement according to the composition which has been set. Then, the characteristics of LBA such as density, water absorption, specific gravity, compressive strength, aggregate impact value and microscopic analysis of the LBA are analyzed. Those characteristics are identified in order to ensure that the LBA are
successfully categorized into lightweight aggregate. The loose bulk density is obtained at 812.5 kg/m3 which can be categorized under lightweight aggregate group. For water absorption the value obtained is 9.7 % which is slightly higher compared to normal aggregate. Meanwhile the average specific gravity obtained for the samples of LBAis 1.75. Compressive strength for the aggregates was 17.76 MPa. The highest compressive strength for LBA foamed concrete was obtained at 25% replacement with
7.83MPa. Thus, the LBA have a significant features and characteristics that can be used as coarse aggregates in concrete.
Link to publisher's homepage at https://www.matec-conferences.org/
2016-01-01T00:00:00ZAn evaluation of stand-alone electrical power PV systems at Orang Asli villages in Cameron Highland, Malaysia
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41474
An evaluation of stand-alone electrical power PV systems at Orang Asli villages in Cameron Highland, Malaysia
Abdul Rahim, Abdul Razak; Ahmad Shukri, Fazil Rahman; Norlia, Mohamad Ibrahim; Yazhar, Yatim; Zamri, Hasan; Shahrun, Nizam; Uda, Hashim
This paper present a case study investigation on the functionality status of the rural photovoltaic electrical power photovoltaic (PV) systems installed at several Orang Asli villages or settlement around Cameron Highland, Pahang, Malaysia after average of 10 years of operation. Several important findings are highlighted and discussed.
Link to publisher's homepage at http://ieeexplore.ieee.org
2012-01-01T00:00:00ZEffects of DC line voltage environment on different types of compact fluorescent lamps operation
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41473
Effects of DC line voltage environment on different types of compact fluorescent lamps operation
Abdul Rahim, Abdul Razak; Uda, Hashim; Norlia, Mohamad Ibrahim; Syafruddin, Hasan; Ahmad Shukri, Fazil Rahman
Compact fluorescent lamps are tested under DC operating conditions. Five random samples are evaluated in term of their starting and operation response compared to normal AC environment. Experiment result shows that DC line supply has successfully able to start and operate any conventional CFL at almost the same lux level and power consumption rate of 240ac rms.
Link to publisher's homepage at http://ieeexplore.ieee.org
2013-01-01T00:00:00ZA study on Hydrogen Sulphide as potential tracer in landfill gas monitoring
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/35603
A study on Hydrogen Sulphide as potential tracer in landfill gas monitoring
Tengku Nuraiti, Tengku Izhar, Dr.; Zaity Syazwani, Mohd Odli; Irnis Azura, Zakarya, Dr.; Farah Naemah, Mohd Saad; Norlia, Mohamad ibrahim; Roshazita, Che Amat; Tan, Ley Binn
Municipal solid waste (MSW) landfills are one of the major source of hydrogen sulphide (H2S) which is the offensive odours potentially creating annoyance in adjacent communities. This project focuses on H2S emission from landfills in Perlis, Malaysia. Landfill gas (LFG) samples were collected and analyzed accordance with NIOSH method 6013. The mean concentrations of H2S in Kuala Perlis Landfill and Padang Siding Landfill are 210.68 ppm and 242.85 ppm respectively. High concentrations of H2S may be a concern for employees working on the landfill site. These results indicate that workers should use proper personal protection at landfill when involved in excavation, landfill gas collection, and refuse compaction. The formation of H2S most likely to be contributed by the biological conversion of sulfate from gypsum-rich soils and landfill wastewater treatment sludges by sulfate-reducing bacteria (SRB) which can utilize dissolved sulfate as an electron acceptor. H2S is conveniently detected by hand held analyzer, such Jerome meter, landfill gas analyzer. In the organic range, in the ease of detection range in the dispersion rate within the landfill site, the monitored H2S gas form a very noticeable concentration with the travelling wind direction. It proved that the dispersion rate of H2S are suitable as tracer to detect route of travelling in a certain distance.
Link to publisher's homepage at http://www.ttp.net/
2013-01-01T00:00:00Z