Accession Number:
AD0752879
Title:
Durability of Prestressed Concrete Beams,
Descriptive Note:
Corporate Author:
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
Personal Author(s):
Report Date:
1964-07-01
Pagination or Media Count:
28.0
Abstract:
The durability of pretensioned and posttensioned concrete beams is being studied using laboratory-prepared beam specimens. A group of beams containing pretensioned strands, some made with air-entrained concrete and others with nonair-entrained concrete, was exposed to natural weathering. It is concluded a Concrete for prestressed structural elements that are to be exposed to freezing and thawing in a moist condition should contain entrained air. b The concrete cover over reinforcing should be greater than 34 in. when exposure to seawater is involved. c Epoxy concrete is superior to portland cement concrete for end protection. Flush anchorages appear to be more effectively protected than external anchorages. Author
Descriptors:
Subject Categories:
- Structural Engineering and Building Technology