In case of general concrete, autogenous shrinkage is about 10% of the drying shrinkage. Therefore it was not considered significant to be a subject matter about managing the crack control and design. It was reported that cracks can be generated from the autogenous shrinkage. Because of the low W/B rate and the high unit binder of the high strength concrete. In this study, autogenous shrinkage and drying shrinkage are examined which is the main reason of the cracks of the high strength concrete based on the previous studies. Comparing the data from this study and previous studies, we developed the shrinkage reduced concrete using shrinkage reducing agent. The purpose of this study is to provide the data for reducing and managing the column shortening of the high strength concrete structures.

• 하정수(단국대학교 대학원 건축공학과 석사과정) | Ha, Jung-Soo Corresponding author
• 백민수(단국대학교 건축대학 건축공학과 겸임교수，공학박사) | Paik, Min-Soo
• 정상진(단국대학교 건축대학 건축공학과 교수，공학박사) | Jung, Sang-Jin