FIRE RESISTANCE OF PRESTRESSED CONCRETE BEAMS, STUDY A - INFLUENCE OF THICKNESS OF CONCRETE COVERING OVER PRESTRESSING STEEL STRAND

THIS PAPER IS THE FIRST IN A SERIES OF REPORTS TO MEET THE URGENT NEED FOR BASIC DESIGN INFORMATION ON THE FIRE RESISTANCE OF PRESTRESSED CONCRETE. RESULTS OF STANDARD ASTM FIRE TESTS CONDUCTED ON 18 PRETENSIONED, PRESTRESSED CONCRETE I-BEAMS OF 20-FT. SPAN ARE ANALYZED AND DISCUSSED. PRINCIPAL VARIABLE WAS CONCRETE COVERING THICKNESS OVER THE PRESTRESSING STEEL. INFLUENCE OF CONCRETE COVERINGS IN 1-, 2-, AND 3-IN. THICKNESS IN NORMAL WEIGHT AND EXPANDED SHALE LIGHTWEIGHT CONCRETES WERE INVESTIGATED. VARIOUS OTHER FACTORS AFFECTING STRUCTURAL BEHAVIOR OF THE BEAMS AND RESULTS OF FIRE TESTS ARE DESCRIBED /PCA/

• Authors:
  • Carlson, C C
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Beams; Concrete; Expanded shale aggregates; Fire resistance; I beams; Lightweight concrete; Prestressed concrete; Pretensioning; Structural analysis; Structural mechanics; Thickness
• Uncontrolled Terms: Concrete beams; Structural behavior
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213587
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 147
• Files: TRIS
• Created Date: Jun 1 1970 12:00AM