Title:
Development of Direct Tension Test Method for Ultra-High- Performance Fiber-Reinforced Concrete
Author(s):
Benjamin A. Graybeal and Florent Baby
Publication:
Materials Journal
Volume:
110
Issue:
2
Appears on pages(s):
177-186
Keywords:
direct tension test; tensile stress-strain response; ultra-highperformance fiber-reinforced concrete.
DOI:
10.14359/51685532
Date:
3/1/2013
Abstract:
Sustained postcracking tensile resistance is a fundamental mechanical characteristic of ultra high-performance fiber-reinforced concrete (UHPFRC). This research program developed a simple, reliable direct tension test (DTT) method that can generate the uniaxial tensile mechanical response for both cast and extracted UHPFRC samples. The developed test method emulates DTT methods already commonly used in the mechanical testing of metals, thus addressing many of the hurdles that can hinder the implementation of new test methods. It was demonstrated to be applicable to two UHPFRCs with two different steel fiber reinforcement contents in seven total sets of specimens. The test method can facilitate the development of appropriate quality control processes for UHPFRC, the advancement of UHPFRC mixture designs, and the development of strain-based UHPFRC structural design criteria.