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Volume Title: ICASGE2015

DOI: ICASGE-RCS

Mahmoud E. Said; Assem A. A. Hassan; and A. Hussein

This paper studies the effect of using metakaolin on the service life of an offshore concrete structure. Life-365 Software was used to predict the service life of six different concrete mixtures that can be used in Hebron offshore structure located in Newfoundland, Canada. One of these mixtures represented the actual mixture used in Hebron project (where corrosion inhibitors are used) while the other five mixtures contained different doses of metakaolin (MK), ranging from 0% to 25%. The structure type used is a platform with a total thickness of 1m, a total area of 10000m2 , and a clear concrete cover of 60mm. The analysis period was taken as 50 years to cover a sufficient time for chloride penetration in such offshore structure. The results demonstrated the effects of MK and corrosion inhibitors on reducing the chloride ion penetration and enhancing the service life of offshore structures. The results also presented the relationships between the chloride diffusion and elapsed time for each tested mixture

Offshore Concrete Structures