Abstract: This study evaluated the durability of concrete substituted with 20% Fly Ash (FA20) and concrete substituted with 50% ground granulated Blast furnace Slag (BS50) for use in nuclear power plants. The experimental variables were admixture type and water-binder ratio. The measured durability characteristics were compressive strength, chloride-attack resistance and resistance to freezing and thawing. BS50 had lower initial strength but better compressive strength as a function of aging than FA20. The results of resistance against chloride attack and freezing and thawing showed that as the water-binder ratio decreased the resistance was improved, regardless of admixture type. In particular, resistance against chloride attack and the mass loss rate due to freezing and thawing in the BS50 mix were approximately 1.3 and 2.2 times higher, respectively as compared to the FA20 mix. Conclusively, the BS50 mix was better than the FA20 mix in terms of chloride attack and freezing-thawing durability.
E.A. Seo, D.G. Kim, H.J. Lee and N.W. Yang, 2017. Evaluation of Resistance to Freezing and Thawing and Chloride Attack of High-Performance Concrete Applicable to Nuclear Power Plants. Journal of Engineering and Applied Sciences, 12: 4000-4004.