Effect Of Light-Weight Concrete On The Behavior Of Reinforced Concrete One-Way Ribbed Slabs Under Fire

Abstract

The globe is currently working towards sustainability by reducing the amount of concrete, thereby reducing the total unit weight. Additionally, materials with a higher strength-to-weight ratio are needed for design construction. Leading sustainability amenities include lightweight concrete (LWC) and ribbed slabs. In order to assess how concrete type and slab type affect the structural behavior of one-way ribbed slabs, this research created an experimental study. Lightweight concrete (LECA and LAVA) was used to build eight one-way slabs, and three slabs was constructed using gravel. These slabs were burned in accordance with the standard fire curve (ASTM-E119). The slabs were exposed to fire for about time (60) minutes and cooled by (water and air), these slabs were tested under two-point load and simply supported until failure. The results showed that using light weight (LECA and LAVA) instead of gravel led to lightweight concrete (LWC), with a cylinder compressive strength of (38 to 42.2) MPa and a density of (1786to 1985) kg/m³. Using LWC instead of normal-weight concrete (NWC) decreased the unit weight by (32.7 and 19.4) %.