Journal Published Online: 06 December 2022
Volume 11, Issue 1

Applicability of Large-Scale Direct Tension Specimens to Quantify Tensile Strength of Fiber-Reinforced Ultra-High-Performance Concrete

CODEN: ACEMF9

Abstract

In this study, a large-scale direct tension specimen (minimum cross-sectional area of 11,000 mm2) was developed to determine its ability to quantify tensile behaviors of fiber-reinforced ultra-high-performance concrete. Direct tension specimens were successfully mixed and molded using readily available equipment in a typical construction materials laboratory. Results from large-scale direct tension tests were compared with results from commonly used indirect methods (i.e., splitting cylinder strength and double punch testing). At early ages, direct tensile specimens had a 0 % failure rate and recorded coefficient of variation values of 6.2 %. Computerized tomography scans from several sections within a large-scale specimen showed sufficiently random fiber orientation, particularly within the desired fracture region. Altogether, this effort showed that large-scale direct tension specimens were successfully able to quantify tensile strength of fiber-reinforced concrete; however, the effects of fiber orientation and boundary conditions on postcracking tensile strength of large-scale specimens need to be further evaluated in future efforts.

Author Information

Roberson, Madeleine M.
Center for Advanced Vehicular Systems (CAVS), Mississippi State University, Starkville, MS, USA
Howard, Isaac L.
Richard A. Rula School of Civil and Environmental Engineering, Mississippi State University, Mississippi State, MS, USA
Shannon, Jay
Concrete and Materials Branch, U.S. Army Corps of Engineers, Engineering Research and Development Center, Vicksburg, MS, USA
Carey, Ashley S.
Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS, USA
Pages: 18
Price: $25.00
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Stock #: ACEM20220054
ISSN: 2379-1357
DOI: 10.1520/ACEM20220054