CONDITION SURVEY OF SALT DAMAGE TO REINFORCED CONCRETE BUILDINGS IN JAPAN
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Published:2002
M Y Masuda, 2002. "CONDITION SURVEY OF SALT DAMAGE TO REINFORCED CONCRETE BUILDINGS IN JAPAN", Challenges of Concrete Construction: Volume 6, Concrete for Extreme Conditions: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Michael J. McCarthy, Moray D. Newlands
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This paper reports on the results of comprehensive survey on the degree of salt damage, chloride content, and the relationship between the chloride content and the rate of corrosion of reinforcement in reinforced concrete buildings in Japan.
The survey consisted of the following:
(1) Condition survey of concrete by appearance observation.
(2) Survey of chloride content of concrete.
(3) Survey of rate of corrosion of reinforcement related to chloride content of concrete.
The progress of deterioration is nearly levels off 10 to 15 years after completion for buildings at a long distance from the sea and those containing no sea sand, whereas buildings near the sea and those containing sea sand tend to continue to deteriorate for a long period. The rate of corrosion is almost inversely proportional to the cover depth and nearly proportional to the chloride content.
INTRODUCTION
CONDITION SURVEY OF CONCRETE BY APPEARANCE OBSERVATION
CHLORIDE CONTENT OF CONCRETE IN BUILDINGS
RESULTS
CHLORIDE CONTENT AND RATE OF CORROSION OF BUILDINGS
CONCLUSIONS
ACKNOWLEDGEMENTS
REFERENCES
