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29 results for “Brittle”
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Research ArticleOpen accessIn the abstractAdhesion and Hardness Evaluation of Modified Silicone-Dammar as Natural Coating MaterialsR. Zakaria, A. H. AhmadProblem statement: Dammar is a natural resin that used anciently in varnish production. The use of dammar natural resin in coating is limited by undesirable properties for application in coating where it is considered very brittle. Due to dammar's brittle nature, an aged dammar coating can be easily scratched or abraded. Approach: Dammar natural resin could be modified into Silicone-Dammar … …American Journal of Applied Sciences, Vol. 9, Issue 6 · 20 Mar 2012 · 7,630 accessesView PDFCite
Research ArticleOpen accessIn the abstractShear Strength of Reinforced Concrete Beam Strengthened by Transverse External Post-tensionSayan Sirimontree, Boonsap Witchayangkoon, Nathavudh Khaosri, Jaruek TeerawongProblem statement: Shear failure of concrete beam is brittle manner without warning so inadequate design for shear of beam and/or material deterioration lead to the possibility of sudden failure of beam. The change of functional use and future increased load of structure lead to the need for strengthening of concrete structure. Approach: This research focuses on behaviors under static loading … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 1 · 31 Jan 2011 · 8,863 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluence of Oil Contamination on Geotechnical Properties of Basaltic Residual SoilZulfahmi Ali Rahman, Umar Hamzah, Mohd. Raihan Taha et al.Problem statement: Oil contamination due to accidental spillage or leakage brings hefty damage to the environments. It percolates steadily into subsurface environments and contaminates the soil and water system. Hydrocarbon contamination has not just affected the quality of the soil but will also alter the physical properties of oil-contaminated soil. Approach: This study presented the geotechnical properties of oil-contaminated soils … …American Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 10,265 accessesView PDFCite
Research ArticleOpen accessIn the abstractLead Free Solder Joint Thermal Condition in Semiconductor PackagingM. Najib Harif, Allina Nadzri, Kamaruzaman JusoffProblem statement: Solder joints are responsible for both electrical and mechanical connections. Solder does not have adequate ductility to ensure the repeated relative displacements due to the mismatch between expansion coefficients of the chip carrier and the circuit board. Solder material plays a crucial role to provide the necessary electrical and mechanical interconnections in an electronic assembly. Finding a technique … …American Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 7,160 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Comparison between Unconfined and Confined Condition of Foamed Concrete Under Uni-Axial Compressive LoadMohd Zairul Affindy Abdul Rahman, Ahmad Mujahid Ahmad Zaidi, Ismail Abdul RahmanProblem statement: Foamed concrete has become most commercial material in construction industry. People in industries were come out with the new mix design of foamed concrete to meet the specification and the requirements needed. Approach: This is because foamed concrete has the possibility as alternative of lightweight concrete for producing intermediate strength capabilities with excellent thermal insulation, freeze-thaw resistance, high-impact … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 8,637 accessesView PDFCite
Research ArticleOpen accessIn the abstractRestrained Shrinkage-Induced Cracking of Light Weight High Performance Fiber Reinforced Cementitious CompositesShaikh Faiz Uddin Ahmed, Hirozo MihashiProblem statement: Shrinkage induced cracking cause damage to reinforced concrete structures. An experimental study was conducted on restrained shrinkage test of cement mortar and light weight High Performance Fiber Reinforced Cementitious Composites (HPFRCC). Approach: Two types of light weight HPFRCC and a premix mortar containing small amount of fiber were included in the experiment. Results: Results showed the multiple cracks, … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,369 accessesView PDFCite
Research ArticleOpen accessIn the abstractNonlinear Models and Experimental Investigation of Lifetime History of HSC Flexural BeamsK. Masti, A.A. Maghsoudi, R. RahgozarThe nature of fracture in high strength concrete is brittle and therefore, the investigation behavior of flexural high strength concrete (HSC) members is important. This paper describes the deflection, strain and energy ductility and the lifetime history of experimental and theoretical analysis of six caste reinforced HSC beams with different percentage of ρ and ρρ'. The beams were loaded incrementally … …American Journal of Applied Sciences, Vol. 5, Issue 3 · 31 Mar 2008 · 6,755 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Assessment of Compressive Size Effect of Plane Concrete Using Combination of Micro-Plane Damage Based Model and 3D Finite Elements ApproachM. Labibzadeh, S. A. Sadrnejad, M. NaisipourIn recent years, the material behavior dependence of laboratory concrete specimens built with the same concrete mixture under the same load conditions to their geometrical sizes is well established. This phenomenon which is observed not only in concrete but also in most quasi-brittle materials such as rock, ceramic or composite materials is now called as size effect. Many of the … …American Journal of Applied Sciences, Vol. 5, Issue 2 · 28 Feb 2008 · 7,005 accessesView PDFCite
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