Journal Published Online: 19 January 2017
Volume 45, Issue 6

Persistence of Strength/Toughness in Modified-Olefin-Fiber- and Hybrid-Fiber-Reinforced Concrete

CODEN: JTEVAB

Abstract

This paper investigates the flexural performance of modified-olefin-fiber- (MOF) and hybrid-fiber-reinforced concrete. The standards and methodologies that are commonly used to evaluate the flexural performance of fiber-reinforced concrete are also discussed. Persistence of strength/toughness (PST) was introduced to evaluate the safety and economics of fiber-reinforced concrete. By comparing the modulus of rupture and the limit of proportionality, the PST can be easily and qualitatively obtained. This method agrees with the toughness index. PST can serve as an excellent supplement to the traditional standards and methods that evaluate the strength and toughness of fiber-reinforced concrete. The test results demonstrate that using hooked steel fibers increased the flexural strength and toughness most. The hybridization of the MOFs and the hooked steel fibers, and the addition of MOFs improved the PST.

Author Information

Zhu, H.
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai, CN
Li, C.
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai, CN
Wu, M.
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai, CN
Yan, M.
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai, CN
Jiang, Z.
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai, CN
Pages: 12
Price: $25.00
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Details
Stock #: JTE20150313
ISSN: 0090-3973
DOI: 10.1520/JTE20150313