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Post‐cracking behavior of polypropylene fiber reinforced concrete under bending and uniaxial tensile tests
Author(s) -
Mudadu Antonio,
Tiberti Giuseppe,
Plizzari Giovanni A.,
Morbi Alessandro
Publication year - 2019
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201800224
Subject(s) - materials science , cracking , composite material , ultimate tensile strength , bending , flexural strength , polypropylene , three point flexural test , fiber , fiber reinforced concrete , uniaxial tension
The post‐cracking tensile behavior of polypropylene fiber reinforced concrete (PFRC) was investigated through an experimental study; special attention was devoted to the effects of fiber distribution and orientation on samples performance. In this regard, an experimental campaign based on uniaxial tensile tests (UTTs) on notched cylinders as well as three‐point bending tests (3PBTs) on notched beams was carried out. Uniaxial post‐cracking tensile laws retrieved both directly (UTTs) and indirectly (3PBTs) were compared. In the latter case, the fracture energy was higher because of the strongly dependency between PFRC post‐cracking performance and fiber distribution and orientation. In addition to cast cylindrical samples, core samples were directly drilled from the beams and tested under UTTs in order to compare their post‐cracking performance with that obtained by flexural standard tests on notched beams.