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Title |
Changes in Corrosion Progress and Ultimate load of Tendon Under 20% and 40% of Ultimate Loading Conditions
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Authors |
류화성(Hwa-Sung Ryu) ; 안기홍(Gi Hong An) ; 황철성(Chul-Sung Hwang) ; 권성준(Seung-Jun Kwon) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.4.047 |
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Keywords |
부식 ; 텐던 ; 인장응력 ; 부식전류 ; 인장하중 ; 긴장력 Corrosion ; Tendon ; Tensile stress ; Corrosion current ; Ultimate load ; Prestressing force |
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Abstract |
PSC (Prestressed Concrete) structures have been used widely for its engineering advantage with using total concrete area as effective compressive section. However tendon inside is exposed to such a high tensile stress that and more attentions should be paid for corrosion control. This work is for changing corrosion current and ultimate strength in tendon with increasing prestressing force in a constant corrosive condition. With increasing prestressing force, corrosion current, corrosion amount, and ultimate load are changed linearly. When prestressing force increases from 20.0 % to 40.0 %, corrosion current increases to 124.4 % and 168.0 % and ultimate load decreases to 87.8 % and 78.4 %, respectively. With inducing constant electrical potential, increasing corrosion current and reduction of strength are evaluated to be linearly related with increasing prestressing load.
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