Recently, Very Stiff and Extremely Dry Concrete which not changed the shape with sell-weight easily and placed with strong vibration is used for a dam, a pavement and a concrete product. This report summarizes the recent technique about the characteristics, the consistency test and the compaction mechanism of the Very Stiff and Extremely Dry Concrete.
The Committee on Thermal Stress of Massive Concrete Structures was organized in 1981. Since then, the research activities have been continued over a period of 17 years. Main recent technical systems on thermal cracking control of massive concrete in Japan have been established based on the results of the committee. In this report we summarize state of the art on thermal cracking control of massive concrete.