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84 articles for “deterioration”
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Research ArticleOpen accessIn the abstractAn Expert System Applied in Construction Water Quality MonitoringLeila Ooshaksaraie, Noor Ezlin Ahmad BasriProblem statement: An untoward environmental impact of urban growth in Malaysia has been deterioration in a number of watercourses due to severe siltation and other pollutants from the construction site. Water quality monitoring is a plan for decision makers to take into account the adverse impacts of construction activities on the receiving water bodies. It is also a process for … …American Journal of Environmental Sciences, Vol. 7, Issue 1 · 28 Feb 2011 · 7,720 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 abstractFreezing and Thawing Durability of Very High Strength ConcreteSameer Hamoush, Miguel Picornell-Darder, Taher Abu-Lebdeh, Ahmed MohamedProblem statement: The newly developed Very High Strength Concrete (VHSC), having compressive strengths of 29 ksi and flexural strengths of 6 ksi, represents a breakthrough in concrete technology. Study to further enhance the properties of this new concrete is continuing. Approach: The objective of this study is to investigate the effect of exposing Very High Strength Concrete (VHSC) specimens to … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 1 · 28 Jan 2011 · 8,817 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 · 8,670 accessesView PDFCite
Research ArticleOpen accessIn the abstractImmunodeficiency Provides Partial Protection from Bone Loss Induced by Castration and OvariectomyCedo M. Bagi, Edwin Berryman, Nels Hanson et al.Problem Statement: The interaction of osteoblasts and osteoclasts with cells of the immune system has been suggested as a contributing factor in the development of osteoporoses. Evidence from studies in rodents suggests that T cells play a significant role in bone loss following estrogen deficiency. The goal of this study was to investigate whether the lack of functional T cells … …Current Research in Medicine, Vol. 1, Issue 1 · 30 Jun 2010 · 7,074 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Useful Life of Lubricants Using Analytical Hierarchy Process (AHP) and Vector Projection Approach (VPA)Surachai Bovornsethanant, Somchai WongwisesProblem statement: In general, engine oil is usually changed as defined by car or lubricant manufacturers, which is according to mileage. However, it was found from past researches that, at the predefined mileage or timeframe, most lubricant is still acceptably usable and efficient. Approach: This research aimed to calculate useful life of lubricant in order to reach its maximum usefulness. … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 7,640 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 · 7,849 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 · 7,236 accessesView PDFCite
Research ArticleOpen accessIn the abstractOil Palm (Elaeis guineensis) Roots Response to Mechanization in Bernam Series SoilZuraidah Yahya, Aminuddin Husin, Jamal Talib et al.Problem statement: Field practices involving the use of mechanization in oil palm plantations could result in soil compaction which alters the soil physical properties. The gradual deterioration of soil physical conditions could restrict the growth and function of roots. This study was carried out to evaluate the response of oil palm roots to changes in soil physical properties due to … …American Journal of Applied Sciences, Vol. 7, Issue 3 · 31 Mar 2010 · 8,771 accessesView PDFCite
Research ArticleOpen accessIn the abstractWaste Disposal and Pollution Management in Urban Areas: A Workable Remedy for the Environment in Developing CountriesJ. A. Awomeso, A. M. Taiwo, A. M. Gbadebo, A. O. ArimoroProblem statement: Both wastes and the crude disposal techniques have created subtle and yet serious environmental pollution havoc in many developing countries. This has lead to the degradation of abiotic and biotic components of these nations’ ecological systems. Poor industrial waste disposal systems as well as the indiscriminate and inappropriate domestic litter disposal habit have been identified and proved to … …American Journal of Environmental Sciences, Vol. 6, Issue 1 · 28 Feb 2010 · 9,108 accessesView PDFCite