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101 results for “CRAC”
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Research ArticleOpen accessIn the abstractTermite Damage to Buildings: Nature of Attacks and Preventive Construction MethodsAbdel Ghaly, Skai EdwardsProblem statement: Termites are an essential member of the soil ecosystem and are found throughout the world. In their natural environment, they improve soil pH, organic carbon content, water content and porosity by cycling dead organics. However, they can negatively impact human welfare by causing damage to unprotected timber structures, underground cables, earthen dams, irrigation ditches and farming equipment. Globally, … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 2 · 12 Jul 2011 · 26,775 accessesView PDFCite
Research ArticleOpen accessIn the abstractRiver Embankment and Bank Failure: A Study on Geotechnical Characteristics and Stability AnalysisMd. Bellal Hossain, Toshinori Sakai, Md. Zakaria HossainProblem statement: Embankment failure and riverbank erosion are common problem in Bangladesh. Almost every year earthen embankments and riverbanks are facing problems like erosion, breaching or retirements. Among many reasons the major causes are considered due to the use of geotechnically unstable materials, improper method of construction, seepage and sliding. In this study the problem is considered geotechnical point of … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 11,007 accessesView PDFCite
Research ArticleOpen accessIn the abstractDifferent Sorption Approaches and Leachate Fluxes Affecting on Mn2+ Transport through Lateritic AquiferSrilert Chotpantarat, Chakkaphan SutthiratProblem statement: Contamination of the underlying aquifer beneath a mining area is usually of great concern even when a prevention plan has been implemented. Approach: To assess the potential risk of heavy metal contamination, the simulation of heavy metal transport was carried out with different leachate fluxes and sorption parameters derived from equilibrium models with linear and Langmuir isotherms and … …American Journal of Environmental Sciences, Vol. 7, Issue 1 · 28 Feb 2011 · 6,150 accessesView PDFCite
Research ArticleOpen accessIn the abstractFlexural Behaviors of Damaged Full-Scale Highway Bridge Girder Strengthened by External Post TensionSayan Sirimontree, Jaruek TeerawongProblem statement: Prestressed Concrete (PC) I section girder with Reinforced Concrete (RC) topping slab has been widely applied to long span bridge girders for several years. A bridge girder is subjected to severe conditions caused by an aggressive environment and overloading. A crack can be initiated and propagate when the tensile stress exceeds the tensile strength of concrete due to … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 8,675 accessesView PDFCite
Research ArticleOpen accessIn the abstractBioengineering Assessment on Sloppy GroundMu'azu Mohammed Abdullahi, Nazri Bn Ali, Kamarudin Bn Haj AhmedProblem statement: Soft engineering solution of sloppy surface utilizes mechanical and hydrological effects of vegetation. The hydrological effects driven by transpiration, induces an increase in matric suction and consequently tension also increase along with the decrease of moisture. Therefore once the horizontal stress of the soil exceeds the limit of tensile strain of the soil cracks occurs. Approach: The negative … …American Journal of Environmental Sciences, Vol. 6, Issue 4 · 31 Aug 2010 · 7,246 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Path to Treatment: Does It Matter? Relapse and the Reason for Seeking TreatmentEvelyn A. Cage, Annette S. KluckProblem statement: Substance abuse is difficult to treat and many of those who struggle with substance abuse do not see treatment as necessary. Moreover, relapse is common among those who receive treatment. Family and friends of Individuals With Addictions (IWAs) sometimes use ultimatums to encourage the IWA to enter treatment. What is less clear is whether IWAs are more likely … …Current Research in Psychology, Vol. 1, Issue 1 · 30 Jun 2010 · 7,640 accessesView PDFCite
Research ArticleOpen accessIn the abstractDie Radius Affecting Sheet Metal Extrusion Quality for Fine Blanking ProcessChatkaew Suriyapha, Suthep Yiemchaiyaphum, Bopit BubphachotProblem statement: Sheet metal extrusion is a process in which the punch penetrates one surface of the sheet metal material to cause it to extrude and flow toward the outlet of the die. Therefore, the process can invent different thickness of sheet metal work piece. From these advantages on the sheet metal extrusion, nowadays, it is generally used in many … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,133 accessesView PDFCite
Research ArticleOpen accessIn the abstractAcrylic Rubber Latex in Ferrocement for Strengthening Reinforced Concrete BeamsD. Raj Kumar, B. VidivelliProblem statement: In India, the early deterioration of reinforced concrete structures has become a big social problem in recent years. An essential research is needed for the development of effective repair materials and their execution systems comes to an important issue from the viewpoint of the longevity of infrastructures at present. Ferrocement laminates are introduced to enhance the overall performance … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 7,857 accessesView PDFCite
Research ArticleOpen accessIn the abstractImpact of Earthquake Demolition Debris on the Quality of GroundwaterM. S. Benmenni, K. BenrachediProblem statement: Debris from construction or demolition/deconstruction processes have no significant impact on the environment as they are res-usable and inert. This has been also long admitted for solid waste generated by the demolition of damaged cities following violent earthquakes. Approach: This study is a contribution to the assessment of actual impact on the quality of groundwater of buried demolition … …American Journal of Applied Sciences, Vol. 7, Issue 4 · 30 Apr 2010 · 7,242 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 · 8,640 accessesView PDFCite