|
Title |
Effect of Crack Defects Occurred in Manufacturing on Moisture Absorption Rate of GFRP Reinforcements
|
|
Authors |
문도영(Do Young Moon) ; 이재훈(Jae-Hoon Lee) |
|
DOI |
https://doi.org/10.4334/JKCI.2025.37.1.101 |
|
Keywords |
흡습률; 균열결함; GFRP 보강근; 에폭시; 비닐에스터 moisture absorption rate; crack defects; GFRP rebar; epoxy; vinyl-ester |
|
Abstract |
The effect of crack defects formed during the manufacturing process of domestically produced glass fiber reinforced polymer (GFRP) rebars on moisture absorption was investigated through experimental analysis. Two types of GFRP rebars, made of from epoxy and vinyl-ester, were studied. Before the experiment, the width and length of crack defects in the cross-section were assessed. The experiment was performed in accordance with ASTM D 570, and both 24-hour moisture absorption and saturated moisture absorption were analyzed. It was confirmed that the larger the crack defect, the greater the 24-hour and saturated moisture absorption. However, the increase in moisture absorption due to crack defects was confirmed to occur much more significantly in vinyl-ester rebar compared to epoxy rebars. Therefore, the effective management of crack defects during manufacturing is especially important for GFRP rebars made of vinyl-ester.
|