Flexure behavior of Low-density reinforced concrete beams with different apertures under static loading

Low-density Zeolite Aggregate (LDZA) is obtained by thermally treated zeolite in a furnace under 500°C. Thus, the water evaporates, and zeolite aggregates (ZA) are obtained with porous structures in which water molecules that make LDZA have endogenous processing properties. In this research, experimental behavior using ZA is used as a replacement portion of fine and Coarse-grained aggregate to obtain Low-density concrete (LDC) beams. The performance of normal reinforced concrete beams was contrasted with that of LDC beams based on their load-deflection behavior, ultimate load capacity, deformation profile, and crack pattern Under the effect of static load. In addition, apertures of different diameters (25, 38,50,60) mm were made in the tensile region along the aperture length of beams to minimize the self-weight of the beams. As a result of the use of zeolite aggregates, there was a decrease in the weight and density of the concrete used in casting the beams, and the results for the Normal Concrete (NC) beam were close to the results from the beam LDC. However, using Apertures in LDC beams in the tensile zone gradually reduced ultimate loads and mid-span deflection. Therefore, it is recommended to use zeolite aggregates to make LDC for use in reinforced concrete elements. © 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.