Testing methods and design specifications for CFRP-prestressed concrete members: A review of current practices and case studies

Abstract

This paper presents a synthesis of test methods and design specifications in regard to concrete members prestressed with carbon fiber reinforced polymer (CFRP) composite tendons. Unlike other state-of-the-art articles handling laboratory experiments and numerical modeling, practical contents are collated and appraised for the benefit of structural and materials engineers who are interested in adopting this nonconventional technology. Various experimental approaches are synopsized, including sampling requirements, property measurement, load-bearing capacity, bond strength, and time-dependent characteristics. As far as implementation is concerned, specific design provisions are reviewed and their applicability is evaluated against recent research findings. Emphasis is placed on prestressing limits, flexural and shear behavior, serviceability, and embedment length. To assist practitioners’ understanding of manufacturing procedures, representative applications are described with sequential pictures. Research needs are identified to address current challenges facing the prestressed concrete community.

Keywords

• Carbon fiber reinforced polymer (CFRP)
• Case studies
• Prestressed concrete
• Review
• State-of-the practice