Flexural Behavior of Repaired Reinforced Concrete Slabs with Different Typed of Concrete

D.Abdulah, Mazen

	Flexural Behavior of Repaired Reinforced Concrete Slabs with Different Typed of Concrete
Muthanna Journal of Engineering and Technology(MJET)
Article 1, Volume 4, Issue 1, 2016, Pages 57-67
Author
Mazen D.Abdulah
Abstract
Experimental study of the flexural behavior of repaired reinforced concrete two way slabs with epoxy injection study in this paper. Eleven simply supported reinforced concrete slabs are used, five of which are made with (NSC), four with (HSC) and two with (LWC). The slabs is repair by used epoxy injection method. The aim of repair method is to increase or at last restore flexural strength of these slabs and to monitor their post-repair load-deflection behavior. Investigate the behavior of reinforeced concrete two way slabs with difrent concrete compressive strength before and after repaired with epoxy injection is studied. Also, the efficiency of repaired after loading to the different level between (100%-66%) of the ultimate load obtained for control slab is investigated. The experimental results of repaired two way slabs indicate that; the repair method used is successful to restore or icrease the capacity of slabs; the lower-strength slabs is higher increase in capacity compered with other slabs; after retesting the crack repaired do not reopen, instead, new nearby cracks are developed. In repaired slabs the the structural behavior is similar to that of original slabs, however, a lower stiffness and greater ductility are observed .
Keywords
LWC; Light weight concrete; NWC; Normal; strength concrete; HSC; heig strength concrete; Water to cement ratio

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