A refined prediction method for the long-term performance of BFRP bars serviced in field environments

Zhiqiang Dong, Gang Wu, Xiao-Ling Zhao, Zi-Ke Wang

Research output: Contribution to journalArticleResearchpeer-review

27 Citations (Scopus)

Abstract

A new kind of advanced composite reinforcement, basalt fiber reinforced polymer (BFRP) bars, has not yet been widely adopted by design codes/guidelines worldwide, likely due to the lack of reliable long-term performance data. This paper proposed a refined prediction method for the long-term performance of BFRP bars that considers the effects of service year, concrete-wrap, environmental humidity and seasonal temperature fluctuations. According to the available accelerated aging tests data in the literature, the environmental reduction factors (ERFs) for a BFRP bar used as a concrete internal reinforcement in a field environment are predicted. The results showed that the ERF for BFRP bars can be recommended to be 0.84 or 0.72 for an RH < 90% and a moisture saturated environment (RH = 100%), respectively.

Original languageEnglish
Pages (from-to)1072-1080
Number of pages9
JournalConstruction and Building Materials
Volume155
DOIs
Publication statusPublished - 30 Nov 2017

Keywords

  • BFRP bar
  • Concrete-wrap
  • Durability
  • Humidity
  • Long-term performance
  • Temperature fluctuation

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