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41 articles for “MPA”
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Research ArticleOpen accessIn the abstractInfluences of Short Discrete Fibers in High Strength Concrete with Very Coarse SandMahyuddin Ramli, Kwan Wai HoeProblem statement: High Strength Concrete (HSC) normally content high cementitous amount and low water binder ratio. However, these would cause substantial volume changes to the concrete and therefore affected the strength development. In addition, the brittleness of HSC was increased when silica fume used as partial cement replacement to achieve high strength. Approach: This study discussed the effects of incorporated … …American Journal of Applied Sciences, Vol. 7, Issue 12 · 31 Dec 2010 · 7,812 accessesView PDFCite
Research ArticleOpen accessIn the abstractRational Mix Design Approach for High Strength Concrete Using Sand with very High Fineness ModulusKwan Wai Hoe, Mahyuddin RamliProblem statement: Production of concrete is always deal with inconsistency. Sources of variation like materials from different geographical basis, mix design method, fineness of aggregates and so on will attribute to different level of achievement of the concrete. Even though researcher had verified that higher fineness modulus of sand would yield better performance for the concrete, but so far there … …American Journal of Applied Sciences, Vol. 7, Issue 12 · 31 Dec 2010 · 8,217 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Mix Proportion of High Performance Mortar for Structural ApplicationsCheah Chee Ban, Mahyuddin RamliProblem statement: Mortar mix is a major construction material in fabrication of ferrocement structural elements. However, there have been scarce amount of technical data available on suitable mix proportion to achieve structural grade mortar with specific strength requirement and adequate level of workability for proper placement into construction formwork. Moreover, current practice in ferrocement construction work which uses mortar mix … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 8,810 accessesView PDFCite
Research ArticleOpen accessIn the abstractLaboratory Scale of Liquid Coal Fuel Combustion Process and Exhaust Gas FormationKartika Kus Hendratna, Osami Nishida, Hirotsugu Fujita, Wataru HaranoProblem statement: Much research of coal has been already undertaken to ascertain the possibilities of coal being used as substitute for heavy fuel oil in the transportation sector. The effects of using coal as transportation fuel to the environment must also be considered. This study will review several aspects of the coal oil combustion process including combustion behavior, flame stability, … …American Journal of Environmental Sciences, Vol. 6, Issue 3 · 30 Jun 2010 · 6,761 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Effects of Drought and Salt Stress on Germination and Seedling Growth of Pennisetum divisum (Gmel.) Henr.Wafa’a A. Al-TaisanProblem statement: Water stress due to drought and salinity is probably the most significant abiotic factor limiting plant and also crop growth and development. Salinity and drought stresses are physiologically related, because both induce osmotic stress and most of the metabolic responses of the affected plants are similar to some extent. Water deficit affects the germination of seed and the … …American Journal of Applied Sciences, Vol. 7, Issue 5 · 31 May 2010 · 27,311 accessesView PDFCite
Research ArticleOpen accessIn the abstractStrength Modeling of High-Strength Concrete with Hybrid Fibre ReinforcementA. Ravichandran, K. Suguna, P. N. RagunathThe low tensile strength and limited ductility, the unavoidable deficiency, of concrete can be overcome by the addition of fibres. High strength concrete (HSC) of 60 MPa containing hybrid fibres, combination of steel and polyolefin fibres, at different volume fraction of 0.5, 1.0, 1.5 and 2.0% were compared in terms of compressive, splitting tensile strength and flexural properties with HSC … …American Journal of Applied Sciences, Vol. 6, Issue 2 · 28 Feb 2009 · 7,541 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effects of Briquetting Pressure on Banana-Peel Briquette and the Banana Waste in Northern ThailandPatomsok WilaiponBanana is considered as one of the most important agricultural products of Northern Thailand. A large amount of banana peel has been left as garbage after industrial processes. The raw material is plentiful and has low economic value. Therefore, the characteristics of banana-peel briquettes including banana peel properties were investigated. The briquettes were produced with pressures ranging from 3 to … …American Journal of Applied Sciences, Vol. 6, Issue 1 · 31 Jan 2009 · 11,911 accessesView PDFCite
Research ArticleOpen accessIn the abstractDensity Equation of Bio-Coal Briquettes and Quantity of Maize Cob in Phitsanulok, ThailandPatomsok WilaiponOne of the most important crops in Phitsanulok, a province in Northern Thailand, is maize. Base on the calculation, the quantity of maize cob produced in this region was approximately 220 kton year-1. The net heating value of maize cob was found to be 14.2 MJ kg-1. Therefore, the total energy over 874 TJ year-1 can be obtained from this … …American Journal of Applied Sciences, Vol. 5, Issue 12 · 31 Dec 2008 · 7,891 accessesView PDFCite
Research ArticleOpen accessIn the abstractEquilibrium Adsorption of Hydrogen and Methane on 5A Molecular SieveHayder A. Abdul Bari, Abdul Halim A.K. Mohammed, Abbas K.M. Shua'ab, Rosli Bin Mohd. YunusAdsorption equilibrium isotherms of hydrogen and methane are reported for the temperature range 303-333 K and pressure up to 4 MPa. The adsorbent was 5A molecular sieve (supplied by Rhone Poulenc industries Ltd.). Experimental data were obtained using a static system for gas-solid adsorption. The Langmuir adsorption equilibrium equation gave excellent predictions. Adsorption of hydrogen and methane on 5A molecular … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2008 · 7,389 accessesView PDFCite
Research ArticleOpen accessIn the abstractFuel Injection Pressure Effect on Performance of Direct Injection Diesel Engines Based on ExperimentRosli Abu Bakar, Semin, Abdul Rahim IsmailFuel injection pressures in diesel engine plays an important role for engine performance obtaining treatment of combustion. The present diesel engines such as fuel direct injection, the pressures can be increased about 100 -200 Mpa bar in fuel pump injection system. The experimental investigated effects of fuel injection pressure on engine performance. Experiments have been performed on a diesel engine … …American Journal of Applied Sciences, Vol. 5, Issue 3 · 31 Mar 2008 · 8,877 accessesView PDFCite