Structural behavior of Lightweight and High strength Layered Hollow Core Slabs

A new technique of Layered Hollow Core Slab (LHCS) has been used to obtain a slab with an optimum weight-to-strength ratio. Specimens 90 mm top layer High Strength Concrete (HSC) and bottom Lightweight Aggregate (LWAC) were examined. Nine full-scale slabs dimensions 1600* 450* 180 tested under 4-point loading test. The %core, a/d, RFT ratio, connection method the different studied parameters. push-out test was conducted on triplet specimens study bond strength at interface between HSC jacket LWAC cubes using agent material or shear dowels, without treatment, determine which them is suitable for connecting two layers slabs. Load, deflection, ductility, strain, crack pattern, mode failure studied. results indicate that ultimate enhanced decreasing a/d %core increasing ratio LHCS specimens. Using dowels ensures efficient ANSYS program modelling slab. numerical accepted experimental data variation less than 10% all