CFRP is a corrosion-free option for pre-tensioning and post-tensioning applications on concrete elements. It performs comparably to steel in the finished product in terms of material handling, structural erection, constructability, and other factors.

933-1.3 Carbon Fiber Reinforced Polymer (CFRP) Strands for Prestressing: CFRP strand shall meet the requirements of ACI 440.4, following the test methods from ACI 440.3. The CFRP strand shall meet the additional requirements of this Section following the sampling frequency and number of specimens required by ACI 440.6. Table 1-1

During casting, CFRP strands are handled with care and the ends are prepared with protective material to prevent damage since they are brittle, especially in the direction perpendicular to the fibers.

Jun 30, 2023 · In this paper, the bonding behaviour between CFRP strands and concrete with grouting admixture is experimentally investigated based on three groups of standard pull-out tests. The bond strength of CFRP strands was systematically studied …

Jan 14, 2025 · The proposed thermoplastic CFRP prestressed strand design demonstrates significant advantages in anchoring strength and recoverability. With the improved design, anchoring efficiency can be increased to over 95%, and the high-temperature recovery process shows good feasibility.

Prestressing strand and reinforcing bar made of carbon fiber reinforced polymer (CFRP) were available when this study was initiated. It has been used to eliminate corrosion in prestressed beams (Enomoto et al., 2012; Grace et al., 2002; Roddenberry et al., 2014; Seracino et al., 2016).

Jan 19, 2024 · A research program was undertaken to design, manufacture, and test to failure full-scale cored slabs prestressed with carbon FRP (CFRP) and reinforced with glass FRP (GFRP) stirrups. Direct tension tests were conducted on the CFRP strands and GFRP bars to validate the manufacturers’ design values.

Jan 1, 2012 · In this study, in order to clarify the stiffening effect and debonding characteristics of CFRP (Carbon Fiber Reinforcement Polymer) strand sheets, the flexural tests using high strength steel reinforced by CFRP strand sheets were performed.

Dec 20, 2019 · The CFRP strands considered in this study had a diameter of 7.5 mm. Each strand consisted of seven-wires that are comprised of continuous carbon fibers and epoxy resins.

Jun 15, 2024 · The study aimed to analyze the effects of the prestress level, number of CFRP strands, layout shape of CFRP strands, bonding layer, and reinforcement ratio of steel bars on the flexural behavior. The test results indicated that all …