TY - GEN
T1 - Shear behavior of steel reinforced ultra high performance concrete members with hybrid fibers
AU - Bermudez, M.
AU - Hung, C. C.
N1 - Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2021.
PY - 2021
Y1 - 2021
N2 - Current design codes require a dense array of steel reinforcement for shear-critical structural elements in earthquake-resistant structures, such as columns, walls, coupling beams, and beam-column joints. However, this leads to congested reinforcement in such elements during construction, which could cause extensively prolonged construction and reduced construction quality. This paper aims to investigate the potential of utilizing Ultra High Performance Concrete with hybrid fibers to reduce shear reinforcement in shear-critical structural elements. A series of beams reinforced with longitudinal steel bars and various combinations of hybrid fibers were tested in a four-point loading setup. Two different shear spans to depth ratio were used to evaluate the effect of the hybridization in the shear response of the member. The test results showed that the presence of hybrid fibers enhanced the shear cracking strength, ultimate shear strength, and crack width controlled ability of the specimens compared to the monofiber beams. The results also indicated that the hybrid specimen with a less volume fraction of fibers could delay the appearance of cracking in the member.
AB - Current design codes require a dense array of steel reinforcement for shear-critical structural elements in earthquake-resistant structures, such as columns, walls, coupling beams, and beam-column joints. However, this leads to congested reinforcement in such elements during construction, which could cause extensively prolonged construction and reduced construction quality. This paper aims to investigate the potential of utilizing Ultra High Performance Concrete with hybrid fibers to reduce shear reinforcement in shear-critical structural elements. A series of beams reinforced with longitudinal steel bars and various combinations of hybrid fibers were tested in a four-point loading setup. Two different shear spans to depth ratio were used to evaluate the effect of the hybridization in the shear response of the member. The test results showed that the presence of hybrid fibers enhanced the shear cracking strength, ultimate shear strength, and crack width controlled ability of the specimens compared to the monofiber beams. The results also indicated that the hybrid specimen with a less volume fraction of fibers could delay the appearance of cracking in the member.
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U2 - 10.1007/978-981-15-8079-6_152
DO - 10.1007/978-981-15-8079-6_152
M3 - Conference contribution
AN - SCOPUS:85104104086
SN - 9789811580789
T3 - Lecture Notes in Civil Engineering
SP - 1645
EP - 1654
BT - EASEC16 - Proceedings of the 16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019
A2 - Wang, Chien Ming
A2 - Kitipornchai, Sritawat
A2 - Dao, Vinh
PB - Springer Science and Business Media Deutschland GmbH
T2 - 16th East Asian-Pacific Conference on Structural Engineering and Construction, 2019
Y2 - 3 December 2019 through 6 December 2019
ER -