Recently, as architectural concrete structures become high-rise and megastructured, concrete become high-strengthened and, by ensuring products of more stability, and rationalization of construction are required.large cross-sectional precast concrete members such as columns show large temperature increase in manufacturing process not only by external heating but also by concrete itself's hydration heating. Therefore, it is expected that specimen for management to predict strength and compression strength of precast concrete member shows different strength characteristics. Conceming this, in order to suggest strength characteristics of high strength mass concrete suitable for precast concrete application, this study comprises the inclusive investigations on the relations between core strength and the strength characteristics per member cross-section dimensional value and per water-bonding material ratio value.

• 박흥이(단국대학교 대학원 건축공학과 석사과정) | Park, Heung-Lee Corresponding author
• 김학영(단국대학교 대학원 건축공학과 박사과정) | Kim, Hak-Young
• 정상진(단국대학교 건축대학 건축공학과 정교수，공학박사) | Jung, Sang-Jin