Comparative Study on Flexural Response of Full and Partial Depth Fiber-Reinforced High-Strength Concrete
Publication: Journal of Materials in Civil Engineering
Volume 14, Issue 2
Abstract
This study presents the results of an experimental and analytical comparison of the flexural behavior of a high-strength concrete specimen (no conventional reinforcement) with an average plain concrete cube strength of nearly 65 MPa and containing trough shape steel fibers. Trough shape steel fibers with a volume fraction ranging from 0 to 1.5% and having a constant aspect ratio of 80 have been used in this study. Increased toughness and a more ductile stress-strain response were observed with an increase in fiber content, when the fibers were distributed over the full/partial depth of the beam cross section. Based on the tests, a robust analytical procedure has been proposed to establish the required partial depth to contain fiber-reinforced concrete (FRC) so as to obtain the flexural capacity of a member with FRC over the full depth. It is expected that this procedure will help designers in properly estimating the required partial depth of fibers in composite sections for specific structural applications. Empirical and mechanistic relations have also been proposed in this study to establish the load-deflection behavior of high-strength FRC.
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Published In
Journal of Materials in Civil Engineering
Volume 14 • Issue 2 • April 2002
Pages: 130 - 136
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jan 14, 1999
Accepted: Mar 26, 2001
Published online: Apr 1, 2002
Published in print: Apr 2002
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