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    Volume 45, Issue 6 (November 2017)

    Special Issue Paper

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

    (Received 26 July 2015; accepted 24 August 2016)

    Published Online: 2017

    CODEN: JTEVAB

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    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,

    Li, C.
    Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai,

    Wu, M.
    Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai,

    Yan, M.
    Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai,

    Jiang, Z.
    Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji Univ., Shanghai,


    Stock #: JTE20150313

    ISSN:0090-3973

    DOI: 10.1520/JTE20150313

    Author
    Title Persistence of Strength/Toughness in Modified-Olefin-Fiber- and Hybrid-Fiber-Reinforced Concrete
    Symposium ,
    Committee C09