Abstract- This paper presents an experimental study on the strength and behavioral aspects of cored ferrocement box-beams for precast purposes. As these beams are lighter in weight, they find their place in seismic resistant design of structures. Eight ferrocement box-beams are cast and tested for bending, under two point loading. The variable parameter includes the number of layers of wire mesh. The study also deals with the experimental and analytical investigations of the ultimate moment capacity of the beams. For ultimate moment capacity analysis, trail and error methods based on the principles of equilibrium and strain compatibility are used. The flexural strength of the cored beams is compared with that of solid box-beams too. The test results indicated that the drop in flexural strength with the voids is less compared to the decrease in the weight of the member. The moment-curvature response of the cored specimens under flexural loading improved with the post-ductility of the member with increase in the number of layers. An empirical formula based on the layers of wire mesh is proposed for the ultimate moment capacity of boxbeam
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