Fluid Transport in Cracked Fabric-Reinforced-Cement-Based Composites
Publication: Journal of Materials in Civil Engineering
Volume 23, Issue 8
Abstract
Cracks in cementitious materials can substantially increase fluid penetration. Fiber reinforcement can reduce the crack width in cementitious materials, thereby reducing fluid transport. Substantial research has been performed to better understand how fabric reinforcement can be used to improve the mechanical behavior of cement-based composites. As a result, the use of fabric reinforcement is being increasingly used in these applications. Fabric reinforcement is being increasingly selected based on the mechanical properties the fabric provides, but unfortunately, the influence of fabric reinforcement on fluid transport is less frequently considered in the fabric selection process. This paper attempts to provide experimental measurements that indicate the importance of fabric properties on fluid transport. This paper describes a series of experiments in which fluid transport was measured using X-ray radiography in cracked cement paste samples that were reinforced with different commercially available fabrics made with monofilament and multifilament yarns that were both coated and uncoated. Results show that fabrics made of multifilament yarns without coating may be problematic from a durability point of view. However, when multifilament yarns are coated, the fabric behaves as a monofilament system. The transport behavior was observed to be highly dependent on the quality of the coating. This should be considered in addition to mechanical performance in assessing the type of fabrics that should be used for a specific application.
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Acknowledgments
The authors would like to thank the Textile and Civil Engineering Departments at the Technical University of Dresden Germany (Technische Universität Dresden) for providing the carbon fabrics for this work and their performances.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 23 • Issue 8 • August 2011
Pages: 1227 - 1238
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 30, 2010
Accepted: Feb 3, 2011
Published online: Feb 4, 2011
Published in print: Aug 1, 2011
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