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

作者：Dong, Zhiqiang; Wu, Gang^*; Zhao, Xiao-Ling; Wang, Zi-Ke

来源：Construction and Building Materials, 2017, 155: 1072-1080.

DOI：10.1016/j.conbuildmat.2017.07.154

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

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.

• 出版日期2017-11-30
• 单位哈尔滨工业大学; 东南大学