폐식용유 기반 도포제의 도포시기에 따른 혼화재 다량치환 콘크리트의 탄산화 및 염해저항성에 미치는 영향

Effect of Spreading Time of Waste Cooking Oil on Carbonation and Resistance to Chloride Penetration of High Volume Mineral Admixture Concrete

As a previous research, improved durability of concrete by filling capillary pores with waste cooking oil was suggested as a method of controlling carbonation of the concrete replaced high volume of SCMs. on the other hand, the emulsified refined waste cooking oil for better mixing performance had a drawback of reducing air content related with decreasing freeze-thawing resistance. As a solution of this problem, surface applying method was suggested instead of adding in mixing process, and in this research, the performance regarding concrete durability are evaluated comparing emulsified refined cooking oil with water-repelling agent.