A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Durability of Prestressed Concrete Beams
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 3/4 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)
Durability of Prestressed Concrete Beams
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 3/4 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)
Durability of Prestressed Concrete Beams
E. C. Roshore (author)
1964
28 pages
Report
No indication
English
Construction Materials, Components, & Equipment , Beams(Structural) , Reinforced concrete , Structural properties , Construction materials , Freezing , Sulfates , Sea water , Failure(Mechanics) , Tests , Prestressed concrete beams , Air-entrained concrete , Prestressed concrete , Durability , Concrete durability
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