TESTS OF BOND BETWEEN CONCRETE AND STEEL

THE TESTS REPORTED WERE UNDERTAKEN WITH A VIEW TO SECURING ADDITIONAL INFORMATION ON THE NATURE OF THE BOND RESISTANCE OF REINFORCING BARS IN CONCRETE, TO DETERMINING VALUES OF BOND RESISTANCE FOR A WIDE RANGE OF CONDITIONS, AND TO STUDYING BOND ACTION IN SPECIMENS OF DIFFERENT FORMS. TESTS WERE MADE ON PULL-OUT SPECIMENS AND ON REINFORCED CONCRETE BEAMS. IN BOTH FORMS OF SPECIMEN, ATTENTION WAS GIVEN TO OBTAINING ACCURATE MEASUREMENT OF THE SLIP OF BAR THROUGH THE CONCRETE AS THE LOADING PROGRESSED. IN MANY OF THE BEAM TESTS THE SLIP OF BAR AT VARIOUS POINTS ALONG ITS LENGTH WAS MEASURED FOR DIFFERENT LOADS. IN THE DISCUSSION OF BOND RESISTANCE THE LOAD-SLIP-OF-BAR RELATION WAS UTILIZED TO A CONSIDERABLE EXTENT. THESE MEASUREMENTS ARE USEFUL IN INDICATING THE DISTRIBUTION OF BOND STRESS. THEY ARE PARTICULARLY SIGNIFICANT IN THE BEAM TESTS. IN A FEW OF THE BEAM TESTS THE DISTRIBUTION OF BOND STRESS WAS STUDIED BY MEASURING THE CHANGES IN THE STRESS IN THE LONGITUDINAL REINFORCEMENT THROUGHOUT THE LENGTH. THE PULL-OUT TESTS CONSISTED IN APPLYING LOAD TO A SHORT REINFORCING BAR EMBEDDED IN A BLOCK OF CONCRETE. A SPECIAL EFFORT WAS MADE TO DETERMINE THE BEHAVIOR OF BEAMS SUBJECTED TO HIGH BOND STRESSES.

• Supplemental Notes:
  • Bulletin No 71, 238 PP, 86 FIG, 40 TAB
• Corporate Authors:

  University of Illinois, Urbana-Champaign

  Engineering Experiment Station
  Urbana, IL  United States  61801
• Authors:
  • Abrams, D A
• Publication Date: 1913-12-8

Subject/Index Terms

• TRT Terms: Bars (Building materials); Beams; Bond strength (Materials); Bonding; Bonds; Concrete; Concrete tests; Flexural strength; Loads; Material reinforcement; Pull out test; Reinforced concrete; Specimens; Stresses; Structural tests; Testing
• Uncontrolled Terms: Concrete beams; Slippage
• Old TRIS Terms: Pullout
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208560
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 12 1970 12:00AM