Experimental Monitoring of Long-Term Structural Behaviour and Prestress Losses of BFRP Pretensioned Beams Under Sustained Loading


Pavlovic A., Donchev T., Petkova D.

10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), İstanbul, Turkey, 8 - 10 December 2021, vol.198, pp.363-372 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 198
  • Doi Number: 10.1007/978-3-030-88166-5_31
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.363-372
  • Keywords: Prestress losses, BFRP, Long-term, PT beams
  • Istanbul Technical University Affiliated: No

Abstract

The recent interest in expanding the scope of application of Fibre Reinforced Polymers (FRP) in the construction industry has been a driver of copious research. The favourable mechanical properties of FRP make them suitable for internal reinforcement of concrete elements with specific service conditions. Nonetheless, the low Young modulus of glass fibre reinforced polymers (GFRP) and basalt fibre reinforced polymers (BFRP) has been a concern, as it negatively affects the serviceability performance of flexural composite reinforced concrete elements. Prestressing has emerged as a possible method for limiting the deflections and cracking and has been shown as effective in numerous papers. However, long-term behaviour of such structural members has not yet been investigated extensively; therefore, this paper aims to give information on long-term behaviour and losses of prestress of pretensions BFRP beams.