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Title |
Freeze-thaw Resistance of Surface Protected Concrete Using Silane Based Hardening Permeable Primer
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Authors |
이승찬(Seung-Chan Lee) ; 윤다애(Da-Ae Youn) ; 길배수(Be-Su Kil) ; 이강민(Kang-Min Lee) ; 윤현도(Hyun-Do Yun) |
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DOI |
https://doi.org/10.4334/JKCI.2020.32.1.037 |
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Keywords |
표면 처리; 실란; 동결융해 저항성능; 콘크리트 surface treatment; silane; freeze-thaw resistance; concrete |
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Abstract |
Highway concrete facilities are exposed to external aggressive environments such as freeze-thaw action and sulphate attack. Deterioration of these constructions initiates from the degradation of the surface, resulting in reducing durability. The silane-based complex compound for improving the durablity of concrete structures exposed to aggressive environments was developed. In this experimental study, the effect of surface treatment using Hardening Permeable Primer (HPP) on the freeze-thaw durability of concrete is investigated on concrete specimens with the size of 150 mm×150 mm×50 mm in accelerated freeze-thawing tests. Variables in the tests are the period of freeze-thaw cycles (4 and 12 hours) and amount of painted HPP (0, 0.25 and 0.51 kg/m2). The properties of surface treatment by HPP on concrete in terms of compressive strength and surface scaling were examined. It is found that surface treatment by HPP significantly reduces surface scaling of concrete surface exposed to freeze-thaw cycles and 3 % sodium choroid (NaCl) solution. But HPP painted in the surface of cylindrical concrete specimens has little effect on the compressive strengths.
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