- Author
- Gustaferro, A. H. | Abrams, M. S. | Salse, E. A. B.
- Title
- Fire Resistance of Prestressed Concrete Beams, Study C: Structural Behavior During Fire Tests.
- Coporate
- Portland Cement Assoc., Skokie, IL
- Report
- Research and Development Bulletin; RD009.01B, 1971, 29 p.
- Keywords
- aggregates | beams | fire resistance | fire tests | prestressed concretes | reinforced concretes | thermal expansion
- Abstract
- Presents detailed data from the fire testing of thirteen 40-ft-long tee beams - tee beams - thirs part of an investigation of the fire resistance of prestressed concrete beams. Cold-drawn 7-wire strand was pretensioned in three beams; post-tensioned, high-strength, hot-rolled alloy steel bars were used in three beams; and post-tensioned, buttonheaded, cold-drawn wires in cables were used in four. Grade 40 deformed bars were used in one nonprestressed beam and Grade 60 in two. Some beams were of structural lightweight concrete; the others of normal-weight concrete. In some, post-tensioned reinforcement was grouted, in others it was unbonded. Minimum concrete cover for each beam was 2 1/4 in. All were simply supported on rocker-roller supports and sustained full design load during tests.