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76 articles for “Concrete Strength”

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Research ArticleOpen accessEvery word in the titleAnalytical Study of Reinforced Concrete Beams Strengthened by FRP Bars Subjected to Impact Loading ConditionsSajjad Roudsari, Sameer Hamoush, Sayed Soleimani et al.Civil engineers have considered Fiber Reinforced Polymer (FRP) materials to enhance the performance of structural members subjected to static and dynamic loading conditions. However, there are some design limitations due to uncertainty in the behavior of such strengthened members. This fact is particularly important when considering the complex nature of the nonlinear behavior of materials, the impact loading conditions and … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 21 Apr 2018 · 9,929 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStrength, Chloride Permeability and Corrosion of Coarse Fly Ash Concrete with Bagasse-Rice Husk-Wood Ash AdditiveVeera Horsakulthai, Kittichat PaopongpaiboonThis study studied the utilization of Bagasse-Rice Husk-Wood Ash (BRWA) as an additive for improving the strength and durability of coarse Fly Ash (FA) concrete. The ground BRWA was used as an additive for maintaining the consistent slump of FA concrete. The strength, chloride permeability and corrosion resistance were investigated. The chloride permeability of concrete was evaluated using the measurement … …American Journal of Applied Sciences, Vol. 10, Issue 3 · 14 Mar 2013 · 6,928 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDuctility Behavior Fiber Reinforced Concrete Beams Strengthened With Externally Bonded Glass Fiber Reinforced Polymer LaminatesMariappan Mahalingam, Ragunath Pulipakka Narashima Rao, Suguna KannanThe study presents the results of an experimental investigation conducted on Steel Fiber Reinforced Concrete (SFRC) beams with externally bonded Glass Fiber Reinforced Polymer (GFRP) laminates with a view to study their strength and ductility. A total of ten beams, 150×250 mm in cross-section were tested in the laboratory over an effective span of 2800 mm. Three fiber reinforced concrete … …American Journal of Applied Sciences, Vol. 10, Issue 1 · 24 Feb 2013 · 6,928 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRate Effect on Pullout Behavior of Steel Fibers Embedded in Very-High Strength ConcreteTaher Abu-Lebdeh, Sameer Hamoush, Brian ZornigProblem statement: Rate dependence of the newly developed Very-High-Strength-Concrete (VHSC) composites has received little or no attention so far. Approach: In this research, the bond-slip mechanisms of four types of steel fibers embedded in VHSC matrices were investigated through single-fiber pullout tests with the loading rates and matrix strengths are the primary variables. This study presented the experimental results of … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,438 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePullout Characterizations of Various Steel Fibers Embedded in Very High-Strength ConcreteSameer Hamoush, Taher Abu-Lebdeh, Toney Cummins, Brian ZornigProblem statement: There is a real need for a fundamental understanding of bond and bond mechanisms in the newly developed Very-High-Strength-Concrete (VHSC) materials. The interfacial steel fiber/VHSC matrix bond tests are needed to characterize VHSC and to aid in the development of analytical models that describe bond behavior of this new material. Approach: This research investigated bond-slip characteristics of four … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,067 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAcrylic 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 accessEvery word in the titleConfined High Strength Concrete Columns: An Experimental StudyJagannathan Saravanan, K. Suguna, P. N. RaghunathProblem statement: An experimental study on GFRP confined high strength concrete columns has been carried out with a view to evaluate its performances under uni-axial compression in terms of load and deformation capacity. Approach: High strength concrete columns strengthened with different configuration and stiffness of GFRP wraps were tested under axial compression until failure. Their response evaluated at different load … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 7,642 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleRepairing and Strengthening of an Existing Reinforced Concrete Building: A North Cyprus PerspectiveHakan Yalciner, Amir A. HedayatProblem statement: Inadequate attention during design and construction of some of Reinforced Concrete (RC) buildings in North Cyprus has raised questions about the performance level of these existing buildings under future earthquakes. Approach: Column jacketing, adding steel braces and new shear walls to an existing building are common strengthening methods used by practical engineers in North Cyprus to increase the … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 9,787 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStrength 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 accessEvery word in the titleStrength Modeling of Reinforced Concrete Beam with Externally Bonded Fibre Reinforcement Polymer ReinforcementN. Pannirselvam, P.N. Raghunath, K. SugunaThis research study presents the evaluation of the structural behaviour of reinforced concrete beams with externally bonded Fibre Reinforced Polymer (FRP) reinforcements. Three different steel ratios with two different Glass Fibre Reinforced Polymer (GFRP) types and two different thicknesses in each type of GFRP were used. Totally fifteen rectangular beams of 3 m length were cast. Three rectangular beams were … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 3 · 30 Sep 2008 · 7,480 accessesView PDFCite