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Structural Concrete
Article . 2020 . Peer-reviewed
License: Wiley Online Library User Agreement
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Effect of macro polypropylene fiber and basalt fiber on impact resistance of basalt fiber‐reinforced polymer‐reinforced concrete

Authors: Qingxuan Wang; Yining Ding; Yulin Zhang; Cecilia Castro;

Effect of macro polypropylene fiber and basalt fiber on impact resistance of basalt fiber‐reinforced polymer‐reinforced concrete

Abstract

AbstractIn this paper, the effect of macro nonmetallic fibers (i.e., polypropylene fibers and basalt fibers) on the impact response of basalt fiber‐reinforced polymer‐reinforced concrete (FRP‐RC) discs is experimentally investigated using a self‐developed drop‐weight impact test device. The plain concrete and conventional steel‐reinforced concrete samples are explored as references. The impact resistance and failure behaviors are analyzed. Statistical analyses for first‐crack strength and failure strength are performed. The composite effect of basalt FRP bars and macro nonmetallic fibers on the impact energy at failure is also compared. The results indicate that the behaviors under impact load, that is, failure strength, crack number, the indent diameter, and penetration depth of the shriveled area, are greatly improved by adding of macro nonmetallic fibers, in particular macro polypropylene fibers. Additionally, the incorporation of these fibers into the basalt FRP‐RC transforms the brittle failure mode into a well ductile failure mode. Two‐parameter Weibull models are fitted by graphical methods and used to characterize the first crack strength and failure strength distributions. Reliability functions for first crack strength and for failure strength are estimated and failure strength can be predicted from first‐crack strength by using a linear regress model. The hybrid use of basalt FRP bars and macro nonmetallic fibers demonstrates a positive synergetic effect on the impact energy at failure.

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Portugal
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Keywords

Impact resistance, Two-paramete rWeibull distribution, Basalt FRP bars, Macro nonmetallic fibers, Synergetic effect

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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