Quality Evaluation Tests for Tensile Strength of Reactive Powder Concrete
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 5
Abstract
This study presents a comparison between different testing procedures to determine the tensile strength of reactive powder concrete (RPC). The tensile strength test methods include a direct tensile test and two indirect tensile tests, the splitting test and the double punch test (DPT). In this study, the RPC was designed to obtain a nominal compressive strength of 100 MPa at the age of 28 days. Macro steel fibers were used to reinforce the RPC by volumetric percentages of 0, 1, 2, and 3%. Mechanical properties of RPC were obtained at 28 days such as compressive, tensile, and flexural strengths; compressive stress-strain relationship; and tensile stress-strain behavior. By comparing the experimental results of the two indirect tensile tests with the uniaxial direct tensile test (DTT), it was shown that the DPT presents more accurate results of the RPC tensile strength than the splitting test. The experimental results were verified with the existing model to predict the tensile strength of the RPC. In addition, considering the low cost and the ease of conducting the DPT, this test can be used as an alternative to the DTT to obtain the tensile strength of the RPC.
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Acknowledgments
The authors thank Messers Duncan Best and Ritchie Mclean, technical staff of the High Bay Laboratory of the School of Civil, Mining and Environmental Engineering, University of Wollongong, Australia, for their support in testing the specimens. The first author is grateful for the financial support received from the Iraqi government.
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Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 5 • May 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jul 6, 2017
Accepted: Oct 27, 2017
Published online: Mar 8, 2018
Published in print: May 1, 2018
Discussion open until: Aug 8, 2018
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