Effect of Fiber Reinforcement on the Isotropic Compression Behavior of a Sand
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 131, Issue 11
Abstract
High-pressure isotropic compression tests were carried out on samples of a uniform fine sand at different initial specific volumes, reinforced with randomly distributed polypropylene fibers (0.5% by weight, 24 mm in length and 0.023 mm thick), as well as on a nonreinforced sand specimen. Analysis of the results identified changes in the isotropic compression behavior due to the random inclusion of fibers into the sand. Two distinct and parallel normal compression lines were observed for the fiber-reinforced and nonreinforced sand. The fibers were exhumed after testing and it was found that fibers had both extended and broken, indicating that the fibers tend to suffer large plastic tensile deformations before breaking and that the fibers act under tension even in isotropic compression.
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Acknowledgments
The writers wish to express their gratitude to CNPq, the Brazilian Council of Scientific and Technological Research (Projects Produtividade em Pesquisa 300832/2004-4 and Edital Universal 472643/2004-5), and PRONEX-FAPERGS for the financial support to the research group.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 131 • Issue 11 • November 2005
Pages: 1434 - 1436
Copyright
© 2005 ASCE.
History
Received: Nov 1, 2004
Accepted: Feb 10, 2005
Published online: Nov 1, 2005
Published in print: Nov 2005
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