Experimental and Analytical Investigations of a Locally Developed Ultrahigh-Performance Fiber-Reinforced Concrete
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 2
Abstract
This paper presents the experimental investigations and analytical modeling of the strength and flexural characteristics of a locally (Las Cruces, New Mexico) developed fiber-reinforced ultrahigh-performance concrete (UHPC). High-strength steel fibers were used to improve the strength and flexural properties of the UHPC. Mean compressive strength of the UHPC mixture was obtained as 138 MPa. The UHPC beams also exhibited favorable flexural responses with the deformational ductility indexes ranging between 6 and 10 and the performance factor between 4 and 6. The longitudinal tensile reinforcement ratio was 0.7%, and no transverse reinforcement was present. The moment versus curvature response was modeled analytically by considering the microscopic stress-strain relationship of the concrete and steel. This response was then integrated with a force-based distributed plasticity beam element. The analytical model thus created captured the experimental moment-curvature and force-deformation responses with appreciable accuracy.
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Acknowledgments
Material donations and assistance were provided by Phil Humphrey from BASF; Mona Gomez from El Paso Machine and Steel; Tony Vigil from Ferreri Concrete Structures, Inc.; Robert Kolinski from Stresscon; Erica Mei from Zhengzhou Yujian Steel Fiber Company, Ltd.; and Truitt Rogers from C&D Southwest Lumber Corp. Any and all opinions, findings, conclusions, and/or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the individuals or organizations listed.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 2 • February 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Dec 11, 2015
Accepted: Jun 27, 2016
Published online: Aug 23, 2016
Discussion open until: Jan 23, 2017
Published in print: Feb 1, 2017
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