Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of sea water from tropical areas on setting times of cements
Summary This paper reports the first results of a programme of research into the influences of sea water and sea atmosphere on cement and concrete in the tropics. The results discussed here show that up to 75% reduction in the normal initial setting time takes place when cement is mixed with sea water, although no influence on the final setting time is perceptible. It is pointed out that prior knowledge of the properties of cement in the local markets in some areas of Africa, notably Sierra Leone, is necessary, in view of the vast difference in properties of available cements of the same brand and production code number. Where sea water is to be used, only cements with initial setting times not less than 30 minutes in excess of the minimum recommended by B.S. 12, 1958, may be permitted without special percautions being taken.
Effect of sea water from tropical areas on setting times of cements
Summary This paper reports the first results of a programme of research into the influences of sea water and sea atmosphere on cement and concrete in the tropics. The results discussed here show that up to 75% reduction in the normal initial setting time takes place when cement is mixed with sea water, although no influence on the final setting time is perceptible. It is pointed out that prior knowledge of the properties of cement in the local markets in some areas of Africa, notably Sierra Leone, is necessary, in view of the vast difference in properties of available cements of the same brand and production code number. Where sea water is to be used, only cements with initial setting times not less than 30 minutes in excess of the minimum recommended by B.S. 12, 1958, may be permitted without special percautions being taken.
Effect of sea water from tropical areas on setting times of cements
Thomas, K. (Autor:in) / Lisk, W. E. A. (Autor:in)
1970
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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