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J. Ocean Eng. Technol. > Volume 26(3); 2012 > Article
J. Ocean Eng. Technol. 2012;26(3):26-32.    
DOI: https://doi.org/10.5574/KSOE.2012.26.3.026   

Sulfate and Freeze-thaw Resistance Characteristic of Multi-component Cement Concrete Considering Marine Environment
Kim Myung-Sik,Beak Dong-Il,Kang Jun-Ho
Department of Civil Engineering Pukyung National University,Department of Civil Engineering Korea Maritime University,Department of Civil Engineering Pukyung National University
해양환경을 고려한 다성분계 시멘트 콘크리트의 황산염 및 동결융해 저항 특성
부경대학교 토목공학과,한국해양대학교 토목공학과,부경대학교 토목공학과
Copyright © 2012 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Key Words: Freeze-thaw attack, Sulfate attack, Fly ash, Ground granulated blast slag, Mata-kaolin
핵심용어: 동결융해 열화, 황산염 침식, 플라이애시, 고로슬래그, 메타카올린
Recently, concrete using multicomponent blended cement has been required to increase the freeze-thaw and sulfate resistances of concrete structures exposed to a marine environment. Thus, the purpose of this study was to propose the use of concrete containing multicomponent blended cement as one of the alternatives for concrete structures exposed to a marine environment. For this purpose, batches of concrete containing ordinary portland cement (OPC), binary blended cement (OPC-G, G: ground granulated blast slag), ternary blended cement (OPC-GF, F: fly ash), and quaternary blended cement (OPC-GFM, M: mata-kaolin) were made using a water-binder ratio of 50%. Then, the durability levels, including thesulfate and freeze-thaw resistances, were estimated for concrete samples containing OPC, OPC-G, OPC-GF, and OPC-GFM. It was observed from the tests that the durability levels of the concrete samples containing OPC-G and OPC-GF were found to be much better than that of the concrete containing OPC. The optimum mixing proportions were a40% replacement ratio of ground granulated blast slag for the binary blended cement and a30% replacement ratio of ground granulated blast slag and 10% fly ash for the ternary blended cement.
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