CONCRETE LIBRARY OF JSCE NO. 16, DECEMBER199O
CONCRETE STRUCTURES IN COLD REGIONS
(Translation from Proceedings of J SCE, No. 402/V-10, Feb. 1989)
Masamichi HAYASHI
SYNOPSIS
This paper summarizes the results of the past systematic investigations on the freeze-thaw durability of concrete structures, gives some examples of old structures in Hokkaido Island, the coldest region of Japan, and describes the results of some experimental research. From the experimental research, the surface scaling of concrete subjected to the action of sea water, and the bond strength between stone and mortar under some curing conditions are explained. Furthermore, strength properties and pore structures of concrete near the surface layer when dried and when exposed to sea water, become clear by using small mortar cylinder specimens of l—5 cm in diameter. Lastly, the freeze-thaw durability of concrete of various air contents exposed to sea water, is shown by rapid freezing and thawing test.
M. Hayashi is a professor emeritus at Kitami Institute of Technology, Kitami, Hokkaido, Japan. He was a researcher of the Civil Engineering Research Institute of the Hokkaido Development Bureau until 1975, a corporation advisor until 1977, a professor of developmental engineering until 1984 and a president until 1990 at KIT. He received his Doctor of Engineering Degree from Hokkaido University in 1962. His research interests include the durability of concrete structures in cold regions, cold weather concreting and marine concrete. He is a member of JSCE, JCI, J SSI and RILEM.
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