Some problems with prestressed concrete sleepers durability

The paper presents the hazards of concrete sleepers linked with delayed ettringite formation (DEF) as well as the need to maintain low alkalis content in cement. The authors also discussed the advantages of mechanical anchorage in sleepers, applied in the BBRV technology. This method is based on the...

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Bibliographic Details
Published in:International journal of research in engineering and technology 2014, Vol.3 (13), p.153
Main Authors: Pawluk, Jarosław, Cholewa, Andrzej, Kurdowski, Wiesław, Derkowski, Wit
Format: Article
Language:English
Subjects:
anchorage
ASR reaction
Byggteknik
Civil engineering
DEF reaction
durability
reinforcement rebars
Online Access:Get full text
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Summary:The paper presents the hazards of concrete sleepers linked with delayed ettringite formation (DEF) as well as the need to maintain low alkalis content in cement. The authors also discussed the advantages of mechanical anchorage in sleepers, applied in the BBRV technology. This method is based on the system of smooth bars anchorage, on the ends of the strings with higher dimensions and is realized with the anchorage plates. It prevents of microcracks formation after tension release.
ISSN:2319-1163
2321-7308