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Flexural behavior of ultra-high performance hybrid fiber reinforced concrete at the ambient and elevated temperature

Flexural behavior of ultra-high performance hybrid fiber reinforced concrete at the ambient and elevated temperature
Flexural behavior of ultra-high performance hybrid fiber reinforced concrete at the ambient and elevated temperature
This study investigates the flexural performance of a hybrid polyethylene-steel fiber-reinforced ultra-high performance concrete. Effects of different levels of fibers hybridization, aggregate size, water-to-binder ratio and exposed temperature on the load-deflection curves, toughness, and toughness index of UHPFRC are examined. Results indicate that a hybrid combination of polyethylene (PE) and steel fibers effectively enhanced limit of proportionality, modulus of rupture, toughness, and toughness index of UHPFRC. UHPFRC with 0.5 vol% PE and 2.0 vol% steel fibers in the current study shows the best flexural performance. Higher water-to-binder ratio and smaller aggregate reduce flexural performance of UHPFRC. Compared to polypropylene (PP) fibers, PE fibers have very limited effects on spalling prevention. Flexural performance of PE-steel hybrid UHPFRC is significantly reduced after exposure to elevated temperature.
0950-0618
Li, Ye
86d13351-982d-46c3-9347-22794f647f86
Yang, En-Hua
a373a8d9-da6d-4c6c-b2c2-aa94073bbee7
Tan, Kang Hai
d6b202e6-50ba-4236-961a-c9be0cb46e5c
Li, Ye
86d13351-982d-46c3-9347-22794f647f86
Yang, En-Hua
a373a8d9-da6d-4c6c-b2c2-aa94073bbee7
Tan, Kang Hai
d6b202e6-50ba-4236-961a-c9be0cb46e5c

Li, Ye, Yang, En-Hua and Tan, Kang Hai (2020) Flexural behavior of ultra-high performance hybrid fiber reinforced concrete at the ambient and elevated temperature. Construction and Building Materials, 250, [118487]. (doi:10.1016/j.conbuildmat.2020.118487).

Record type: Article

Abstract

This study investigates the flexural performance of a hybrid polyethylene-steel fiber-reinforced ultra-high performance concrete. Effects of different levels of fibers hybridization, aggregate size, water-to-binder ratio and exposed temperature on the load-deflection curves, toughness, and toughness index of UHPFRC are examined. Results indicate that a hybrid combination of polyethylene (PE) and steel fibers effectively enhanced limit of proportionality, modulus of rupture, toughness, and toughness index of UHPFRC. UHPFRC with 0.5 vol% PE and 2.0 vol% steel fibers in the current study shows the best flexural performance. Higher water-to-binder ratio and smaller aggregate reduce flexural performance of UHPFRC. Compared to polypropylene (PP) fibers, PE fibers have very limited effects on spalling prevention. Flexural performance of PE-steel hybrid UHPFRC is significantly reduced after exposure to elevated temperature.

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More information

e-pub ahead of print date: 30 March 2020
Published date: 30 July 2020

Identifiers

Local EPrints ID: 497294
URI: http://eprints.soton.ac.uk/id/eprint/497294
ISSN: 0950-0618
PURE UUID: 574d4e29-072a-4405-9b4c-b46a950834b5

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Date deposited: 17 Jan 2025 17:47
Last modified: 18 Jan 2025 03:23

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Contributors

Author: Ye Li ORCID iD
Author: En-Hua Yang
Author: Kang Hai Tan

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