The main focus of this experimental program is to conserve the natural resource and protection of environmental is the key to sustainable development. The investigation on flexural behavior of reinforced recycled aggregate concrete slabs with natural aggregates (NCA), recycled aggregate (RCA) and treated recycled aggregate (TRCA).Twelve test slab specimens of size 600mm x 600mm x 60mm with fixed end condition and two way slab criteria have been considered with four different concrete matrices of three each for following matrices viz.,(i)S-1:100%NCA (ii) S-2:50%NCA+50%TRCA (iii) S-3:30 % NCA+50%TRCA+20%RCA (iv) S-4:80%NCA+20%RCA .The experimental investigation examines testing of test slab specimen under static loading to determine its first crack load, ultimate load, yield deflection, ultimate deflection, ductility index, toughness index, cracking moment. The investigation indicates encouraging results of RCA and TRCA slab in all respect pointing to recycle aggregate as potential alternative source of aggregates of 21stcentury. From the experimental results that the test slab specimen S-2 has attained maximum First crack load, ultimate load, ductility Index, Toughness Index, cracking moment and Punching shear strength W.R.T test slab specimen S-3 and S-4.Comparison is made between experimental results and theoretical prediction of the same.
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