Lightweight Panels of Steel Fiber-Reinforced Self-Compacting Concrete
Publication: Journal of Materials in Civil Engineering
Volume 19, Issue 4
Abstract
When the benefits of self-compacting concrete (SCC) are added to those resulting from the addition of discrete steel fibers to cement based materials, a high performance material, designated as steel fiber-reinforced self-compacting concrete (SFRSCC), is obtained. The present work is part of a research project that was conducted to develop a lightweight precasting SFRSCC panel for building façades. The SFRSCC mix design strategy and the experimental research conducted to characterize the bending and the compression behavior of SFRSCC at ages ranging from to 28 days are presented. A particular effort is made to assess the SFRSCC postcracking behavior, carrying out three point notched beam bending tests. The equivalent and the residual flexural tensile strength parameters, proposed by RILEM TC 162-TDF to characterize the toughness of steel fiber reinforced concrete, are determined for the designed SFRSCC. To evaluate the stress-crack opening diagram of the designed SFRSCC, an inverse analysis is performed, fitting the experimentally obtained force-deflection curves. The influence of the age on the SFRSCC fracture parameters is analyzed. SFRSCC prototype panels were tested to assess their flexural and punching resistance.
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Acknowledgments
The study reported in this paper is part of the research program “Prefabricated sandwich steel fiber-reinforced panels” supported by FEDER and MCT, and promoted by ADI (the funds were 45% of the applied amount). This project involves the companies PREGAIA and CIVITEST, and the University of Minho. The writers wish to acknowledge the materials generously supplied by Bekaert (fibers), SECIL (cement), Degussa (superplasticizer), and Comital (limestone filler).
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 19 • Issue 4 • April 2007
Pages: 295 - 304
Copyright
© 2007 ASCE.
History
Received: May 26, 2005
Accepted: May 25, 2006
Published online: Apr 1, 2007
Published in print: Apr 2007
Notes
Note. Associate Editor: Nemkumar Banthia
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