Adhesive Anchors in Concrete Under Sustained Tensile Loads

The article examines creep failure in adhesive anchors, determined by the National Transportation Safety Board (NTSB) to be a probable cause of the ceiling section collapse in Boston, Massachusetts' Interstate 90 connector tunnel in 2006. Of the 19 safety recommendations in the NTSB report on the collapse, one was directed toward the American Concrete Institute (ACI): "Use your building codes, forums, educational materials, and publications to inform design and construction agencies of the potential for gradual deformation (creep) in anchor adhesives and to make them aware of the possible risks associated with using adhesive anchors in concrete under sustained tensile-load applications." Related ACI activity is highlighted. An insert details the NTSB report on the Big Dig tunnel collapse. Online access to the full report is available: http://www.ntsb.gov/publictn/2007/HAR0702.pdf

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4163061
• Publication Date: 2007-12

Language

• English

Media Info

• Media Type: Print
• Features: References;
• Pagination: pp 30-31
• Serial:
  • Concrete International
  • Volume: 29
  • Issue Number: 12
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0162-4075

Subject/Index Terms

• TRT Terms: Adhesives; Anchors (Structural connectors); Collapse; Concrete; Creep; Deformation; Failure; Tension; Tunnels
• Identifier Terms: U.S. National Transportation Safety Board
• Uncontrolled Terms: Sustained loads
• Subject Areas: Bridges and other structures; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01084745
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 28 2008 8:12AM