Abstract
Durability of concrete structures are seriously suffered from cracking in early age concrete. Since the early age cracking is influenced by a lot of factors which are highly interacted each other to affect the hydration process, and strain and stress development, the cracking behavior is very complicated and any rational controlling methodologies for the cracking have not been established yet. In spite of the complexity, high strength concrete has been used more and more and the number of massive concrete structures has increased. These trends require more rational methodologies for the control. In this report, recent research trends on the mechanisms to cause the complex phenomena and on the methodologies to control the early age cracking are reviewed.
