Recently, a method of using blast furnace slag to reduce the amount of cement which generates a large amount of carbon dioxide during the manufacturing process has been studied. Blast furnace slag is a latent hydraulic property material and requires the use of alkali activator. However, alkali activator is expensive and have problems in use. Therefore, in this study, an alkali aqueous solution was used instead of an alkali activator. The alkaline aqueous solution used in this study was obtained by electrolysis of pure water and has strong alkalinity of pH12. As a result, we found that the use of alkali aqueous solution is effective in improving the reactivity of blast furnace slag.

• 박선규(목원대학교 건축학부 건축공학과 교수, 공학박사) | Park, Sun-Gyu Corresponding author
• 김선아(목원대학교 건축학부 건축공학과 석사과정) | Kim, Sun-A