INTERNATIONAL JOURNAL OF TECHNOLOGY MANAGEMENT & HUMANITIES
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Title:Load Enhancement and Its Parametric Study of HSSCC Rectangular Slabs with Three Edges Fixed and One Long Edge Free Support Condition
Abstract:A characteristic feature in the structural behavior of reinforced concrete slab elements, is the development of membrane forces, due to this, the ultimate loads of reinforced concrete tested slabs are found to be higher than the computed Johansen’s yield line load. This enhancement beyond yield line load is due to change of geometry and boundary restraints. This enhanced load carrying capacity of slabs has not been used in the design of slabs in various codes of practice all over the world The probable reason may be that not much research data exists on experimental and analytical investigations on the behavior of slabs with varied support subjected to various loadings in the literature. An experimental investigation has been under taken by testing six high strength self compacting concrete (HSSCC) slabs and six traditionally vibrated concrete slabs. The supported conditions was that the three edges of the slabs were fixed and one long edge was left free. The slabs were tested under uniformly distributed loading. A load disperser was specially fabricated and used to simulate uniformly distributed load condition from a single point load. The load enhancement was computed for the slabs and a parametric study on the enhancement has been done considering certain parameters like coefficient of orthotropy, aspect ratio, span/depth ratio, concrete cube strength, and percentage of reinforcement. The results of the study has been presented here. Keywords: HSSCC Slabs, Membrane action, Johansen’s yield load, Load enhancement, parametric study