Durability of mechanical properties of GFRP rebars exposed to seawater

Alvaro Ruiz Emparanza, Francisco De Caso Y Basalo, Raphael Kampmann, Pedro Rodrigues De Castro Jalles, Antonio Nanni

Research output: Contribution to journalConference articlepeer-review


A continued process exists to implement innovative materials to enhance the sustainability and durability of the built infrastructure. Technologies developed over the last two decades have facilitated the use of glass fiber reinforced polymer (GFRP) composites as internal reinforcement bars (rebars) for concrete structures, which have proven to be an alternative to traditional steel reinforcement due to significant advantages, such as magnetic transparency and, most importantly, corrosion resistance, equating to durability and structural life extension. This study evaluated the durability of three different commercially available and most commonly used GFRP rebar types for resistance to aggressive environments, such as those experienced in coastal areas. In total, 216 specimens were exposed to seawater, at various temperatures (23, 40 and 60°C) for different time periods (60 and 120 days). The durability of these GFRP rebars was assessed by testing five different physio-mechanical properties, including: tensile strength, modulus of elasticity, transverse and horizontal shear strength, and bond-strength to concrete. Preliminary results show that the durability of the GFRP rebars after being exposed to seawater at different temperatures, varies considerably among the three different rebar types. Among the tested physio-mechanical properties, tensile strength suffered the highest degradation.

Original languageEnglish (US)
JournalSustainable Construction Materials and Technologies
StatePublished - 2019
Event5th International Conference on Sustainable Construction Materials and Technologies, SCMT 2019 - Kingston upon Thames, United Kingdom
Duration: Jul 14 2019Jul 17 2019

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)


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