EVALUATION OF CONCRETE ANCHOR BOLTS

THE STUDY WAS CONDUCTED TO DETERMINE THE EFFECTIVENESS OF VARIOUS TYPES OF CONCRETE ANCHORAGE DEVICES. THIS WAS TO BE ACCOMPLISHED BY COMPARING THE AXIAL PULLOUT STRENGTHS OF CAST-IN-PLACE BOLTS AND FRICTION ANCHORS. STATIC AXIAL LOAD TESTS WERE CONDUCTED ON CAST-IN-PLACE BOLTS, EPOXIED AND GROUTED-IN-PLACE THREADED RODS, AND 7 TYPES (5 BRANDS) OF COMMERCIALLY AVAILABLE FRICTION TYPE CONCRETE ANCHORAGE DEVICES. CONSTANT AXIAL LOAD TESTS WERE CONDUCTED ON THE EPOXIED-IN-PLACE THREADED RODS AND ALL OF THE FRICTION TYPE ANCHORS. IT WAS FOUND THAT THE STRENGTH OF EPOXIED AND GROUTED-IN-PLACE RODS AND OF COMMERCIAL FRICTION TYPE ANCHORS WAS DEPENDENT ON THE LOADING RATE, WHEREAS THE STRENGTH OF CAST-IN-PLACE BOLTS WAS INDEPENDENT OF THE LOADING RATE. BECAUSE OF THIS, IT WAS NOT POSSIBLE TO OBTAIN A DIRECT CORRELATION BETWEEN STATIC AXIAL PULLOUT STRENGTHS OF CAST-IN-PLACE BOLTS AND THE OTHER TYPES OF ANCHORS TESTED. PERFORMANCE CHARACTERISTICS AND TEST RESULTS FOR EACH TYPE OF ANCHORAGE DEVICE ARE DISCUSSED INDIVIDUALLY. /AUTHOR/

• Supplemental Notes:
  • Hpr-pr-1 (6), D-4-42
• Corporate Authors:

  California Division of Highways

  Bridge Department
  Sacramento, CA  United States  05914

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Nordlin, E F
• Publication Date: 1968-6

Subject/Index Terms

• TRT Terms: Anchor bolts; Anchorages; Axial loads; Bolts; Cast in place structures; Concrete; Epoxides; Fibers; Grouting; Load tests; Performance tests
• Uncontrolled Terms: Threads
• Old TRIS Terms: Epoxy; Friction bolt
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215889
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Nov 29 1994 12:00AM