STEEL FIBER CURVATURE IN CONCRETE COMPOSITES: MODULUS PREDICTIONS USING EFFECTIVE STEEL FIBER PROPERTIES
DOI : 10.3844/ajassp.2014.145.151
American Journal of Applied Sciences
Volume 11, Issue 1
Results in the literature demonstrate that substantial improvements in the mechanical behavior of concrete have been attained through the addition of steel fibers as a reinforcing phase. We have developed a model combining finite element results and micromechanical methods to determine the effective reinforcing modu-lus of hook-ended steel fibers. This effective reinforcing modulus is then used within a multiphase micro-mechanics model to predict the effective modulus of concrete reinforced with a distribution of fibers. We found that fiber curvature effect is negligible when compared to straight fibers. Then mechanical properties of concrete reinforced with crimped steel fibers are predicted using Weng and Huang schemes. The predic-tions are in excellent agreement with experimental results.
© 2014 Abdellatif Selmi. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.