1988 Fiscal Year Final Research Report Summary

Role of Environmental Conditions on the Frost Damage of Concrete

Research Project

Project/Area Number	62550407
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	Building structures/materials
Research Institution	Hokkaido University
Principal Investigator	KAMADA Eiji Fac. of Engineering, Hokkaido University, 工学部, 教授 (50001996)
Co-Investigator(Kenkyū-buntansha)	TABATA Masayuki Hokkaido Polytechnic College, 講師 (20002024)
Project Period (FY)	1987 – 1988
Keywords	Concrete / Frost Damage / Environmental Condition / 凍結融解試験
Research Abstract	Influence level of environmental factors gained from laboratory tests were investigated various factors had been taken into consideration, such as the factor concerning to the temperature, the factor concerning to the surrounding water during the freezing, and particulary, the factor concerning to the water content during the early period of freezing. These results were adopted for the estimation of temperature conditions of specimens which had been exposed to outdoors in Sapporo, and relation ship between the exposure term effect and the frost damage in freezing-and-thawing test was calculated. The effect of annually 100 freezing-and-thawing of specimens have been left and exposed to outdoors in Sapporo corresponds to the influence of 19 experimental cycles, supposing we applied to standard test (ASTM c666 A Method).