Journal of Engineering and Applied Sciences

Year: 2018
Volume: 13
Issue: 17
Page No. 7426 - 7431

Shear Behavior of Waste and Natural Coarse Aggregate Concrete Beams

Authors : Adel A. Al-Azzawi

Abstract: The waste concrete material recycling process is a sustainable solution for the problem of increasing construction waste disposal and resources lack of natural aggregate. The study of a concrete casted with recycled aggregates which is called waste or recycled aggregate concrete is become more interesting now a days for producing structural elements. The performed laboratory test is carried out to trace the shear response of waste aggregate concrete beams and comparing it with the behavior of same beams with Natural Aggregate Concrete (NAC) under loading applied monotonically. Two different waste aggregate contentsas a percentage to the total aggregate mass in the mixtures of concrete (0, 50 and 100%) and two ratios of shear span to effective depth (1.5 and 3) without and with stirrups were considered in the present work investigation. Small-scale laboratory tests were selected and performed on nine specimens with simple supports until collapse. The load-deflection response, crack distrbutions, failure modes, cracking deflections and ultimate loads of natural coarse aggregate and waste coarse aggregate concrete beams were compared based on the obtained test results. The results revealed that the waste aggregate beams shear response may be considered to be satisfactory or acceptable when compared to the response of natural coarse aggregate beams in terms of cracking and ultimate loads. The obtained ultimate shear strength for the tested beams (with no stirrups) exceeds the shear cracking strength by different percentages ranging from 30-43% for different waste aggregate percentage. The ultimate shear strength of the tested beams (with stirrups) exceeds the shear cracking strength by different percentages ranging from 98-126 % for different waste aggregate content and shear span.

How to cite this article:

Adel A. Al-Azzawi , 2018. Shear Behavior of Waste and Natural Coarse Aggregate Concrete Beams. Journal of Engineering and Applied Sciences, 13: 7426-7431.

Design and power by Medwell Web Development Team. © Medwell Publishing 2024 All Rights Reserved