POST-INSTALLED ADHESIVE-BONDED SPLICES IN BRIDGE DECKS

The purpose of this study was to investigate the feasibility of using post-installed adhesive-bonded splices for bridge deck additions. Current bridge deck additions involve the removal of part of the existing bridge deck so that reinforcing bars for the new deck can be spliced with those in the existing deck. The alternative presented is to drill into the side of the existing deck and install reinforcing bars using a structural adhesive. The study includes both constructability concerns and structural requirements for the splices. The specific objectives were to: examine the methods used to install adhesive splices and determine if the methods are practical for use on a job site; perform flexural tests to determine the splice length required to achieve full flexural strength when using an adhesive-bonded splice; perform shear tests to determine the shear strength of adhesive-bonded dowel bars; provide design recommendations for splice lengths for adhesive-bonded reinforcement in bridge deck additions; and provide design recommendations for determining the shear strength of adhesive-bonded dowel bars in bridge deck additions. Four test series were performed to investigate the moment and shear capacity of post-installed adhesive-bonded reinforcement. Each test series consisted of a control specimen with no spliced reinforcement and four test specimens using adhesive-bonded splices with varied locations and embedment lengths. The results of these tests indicated that the splice length provisions of the ACI 318 and AASHTO codes are adequate and that the Florida Department of Transportation specifications for anchorage of adhesive-bonded anchors could be used with some modifications to account for splice length. For shear strength of adhesive-bonded dowel bars, the shear-friction provisions of ACI 318 and AASHTO are appropriate.

• Corporate Authors:

  University of Florida, Gainesville

  Department of Civil and Coastal Engineering
  Gainesville, FL  United States  32611-6580

  Florida Department of Transportation

  Haydon Burns Building, 605 Suwanee Street
  Tallahassee, FL  United States  32301

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Cook, R A
  • Beresheim, S D
• Publication Date: 2002-10

Language

• English

Media Info

• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 83 p.

Subject/Index Terms

• TRT Terms: Adhesives; Anchoring; Bridge decks; Engineering moments; Flexural strength; Installation; Length; Recommendations; Reinforcing bars; Shear strength; Shear tests; Specifications; Splicing; Structural design
• Uncontrolled Terms: Bridge deck widening; Constructability
• Subject Areas: Bridges and other structures; Design; Highways; Maintenance and Preservation; Research; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00939685
• Record Type: Publication
• Report/Paper Numbers: Report No. 714,, UF PN 4910 4504 714 12,, Final Project Report
• Contract Numbers: BC354 RPWO 2
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 5 2003 12:00AM