Work

Fatigue performance criteria for CFRP Reinforcements Based on RC behavior in civil construction

Year: 2024

Type: article

Abstract: This study aims to develop fatigue performance criteria for Carbon Fiber Reinforced Polymer (CFRP) reinforcements, considering the mechanical behavior of Reinforced Concrete (RC) structures. Fatigue tests were conducted to create S-N and ε-N curves based on different fiber-volume fractions (40 %, 50 %, 60 %), and these curves were used to evaluate and apply the fatigue performance of CFRP reinforcements. The results quantitatively confirmed that specimens with a 60 % fiber-volume fraction exhibited reduced fatigue resistance due toinsufficient fiber-matrix bonding. Additionally, SEM analysis revealed the mechanisms behind early delamination and micro-cracks caused by long-term cyclic loading. This study developed practical fatigue performance evaluation criteria based on S-N and ε-N curves, providing useful guidelines for evaluating the durability and designing CFRP reinforcements under various load conditions. The flexural-tensile fatigue method proposed in the study is expected to overcome the limitations of traditional tension-tension fatigue tests and contribute to improving the durability and performance of CFRP reinforcements.

Source: Journal of Asian Architecture and Building Engineering

DOI: 10.1080/13467581.2024.2421230

Authors: Young-Jun Bae, Viriavudh Sim, Sang-Moon Lee, Woo-Young Jung

Institutions: Gangneung–Wonju National University, Ministry of Land Management, Urban Planning and Construction

Language: English

Topic: Structural Behavior of Reinforced Concrete

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,165