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Title |
Durability Performance of Concrete Penetrated and Coated by Polydimethylsiloxane for Penetrating Water Repellency
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Authors |
이병재(Byung-Jae Lee) ; 이준(Jun Lee) ; 김윤용(Yun-Yong Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2017.29.6.607 |
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Keywords |
흡수방지재 ; Polydimethylsiloxane ; 표면침투코팅 ; 복합열화 penetrating water repellency ; polydimethylsiloxane ; surface penetration and coating ; combined deterioration |
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Abstract |
This study investigated the durability performance of concrete to which Polydimethylsiloxane (PDMS) was applied for penetrating water repellency. The results of the penetration depth test by application method confirmed that IM (immersion) exhibited the most enhanced performance and SM (spray) also showed enhanced performance compared to plain concrete, this is, the concrete without PDMS application. Evaluation of the penetrating water repellency revealed that, the PDMS applied concrete satisfied the requirement of less than 0.1 presented by KS F 4930, indicating excellent penetrating water repellency. From test of the resistance to chloride ion penetration, superior salt-resistance was shown in comparison to plain concrete, by the application of PDMS. Experimental results of SM and IM showed more than twofold improved salt-resistance compared to plain concrete. It was also confirmed that the application of PDMS resulted in enhanced frost resistance. As a result of testing combined deterioration, surface scaling occurred on plain concrete, whereas scaling was not observed on the concrete surface to which PDMS was applied, indicating superior combined-deterioration resistance achieved by the application of PDMS.
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