FACTORS INFLUENCING FLEXURAL CRACKING OF PRECAST REINFORCED AND PRESTRESSED CONCRETE BEAMS IN THE LIGHT OF POSSIBLE NON- UNIFORMITY IN MANUFACTURE

BASED ON OBSERVATIONS AT MANY HUNDREDS OF HIGH STRENGTH BEAM TESTS SINCE 1933 (PARTICULARLY SOUTHAMPTON, RESEARCH 1965), THE FACTORS INFLUENCING CRACKING ARE DISCUSSED. IN ADDITION TO CONCRETE COVER, STEEL PERCENTAGE, SIZE AND DISTRIBUTION (SPACING), THE BOND EFFICIENCY (MAINLY DEPENDENT ON SHAPE, SIZE AND SURFACE CONDITIONS OF THE STEEL AND STRENGTH AND COMPACTION OF THE CONCRETE AROUND THE STEEL) AFFECTS THE MAXIMUM CRACK WIDTH. IT CAN BE LIMITED BY GOOD DESIGN & DETAILING IN SPITE OF VARIATIONS IN MANUFACTURE (SUBJECT TO PROBABILITY). EFFICIENT SUPERVISION WITH GOOD WORKMANSHIP IS NEEDED TO MINIMISE NON-UNIFORMITY. /AUTHOR/

• Supplemental Notes:
  • Vol 4, pp 135-150, 10 FIG, 24 REF
• Corporate Authors:

  International Association for Bridge and Structural Engineering

  ETH-Honggerberg, Wolfgang-Pauli-Strasse 15
  Zurich 8093,   Switzerland  CH-8093
• Authors:
  • Abeles, P W
• Publication Date: 1969

Subject/Index Terms

• TRT Terms: Beams; Bonds; Compaction; Concrete; Concrete tests; Cracking; Flexural strength; Flexure; Fracture mechanics; High strength steel; Prestressed concrete; Prestressing; Reinforced concrete; Spacing; Standardization; Structural tests; Texture
• Uncontrolled Terms: Concrete cracking
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209161
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 30 1970 12:00AM