Influence of High Temperature on Concrete Performance
By S. Asamoto, S. Okazaki, I. Kurashige, N. Chijiwa and Y. Kawabata
Concrete Journal, Vol.57, No.6, Jun. 2019
- Synopsis
- In the case of mass concrete, rich-mixture prestressed concrete, steam cured precast concrete, and hot weather concrete, the temperature in the concrete due to internal and external factors can be as high as 60°C to 80°C. Focusing on the practical risks by the high temperatures of 60°C to 80°C, the Technical Subcommittee on the Investigation into the Effects of High Temperature on Concrete Performance and Characteristics (Committee No. 352) of the Japan Society of Civil Engineers discussed the topics and required research when the concrete structures are exposed to the high temperature, from the two aspects of the macro performance requirements for design and construction, and the physicochemical micro-characteristics organically related to the macro performance. This paper organizes the design and construction-related concepts in the field of civil engineering related to exposure to high temperatures, presents an overview of the results of the Subcommittee's activities, and outlines the required approach for understanding the effects of exposure to high temperatures on concrete performance, and related design issues.
- Keywords:
- Japan Society of Civil Engineers, high temperature exposure, design and construction, multi-scale
