Effect of Implementing LECA in LWC Waffle Slabs

Abstract

A two-way waffle slab system might consist of slabs with a flat flange plate or deck and two orthogonally spaced parallel beams. The key objective of using two-way ribbed (waffle) slabs is to decrease the quantity of concrete and reinforcement and, therefore, the structure's weight. This study investigates the behaviour of two-way waffle slabs that contain lightweight expanded clay aggregate (LECA) to produce LWC. Results stated that (LECA) could produce structurally lightweight concrete by completely replacing coarse aggregates. It would maintain the same compressive strength as NWC with a 26.2 % lower concrete dry density.