Title: Recommended Procedures for Development and Splicing of Post-Installed Bonded Reinforcing Bars in Concrete Structures

Author(s): Finley A. Charney, Kamalika Pal, and John Silva

Publication: Structural Journal

Volume: 110

Issue: 3

Appears on pages(s): 437-446

Keywords: adhesive; anchorage; bond; development; post-installed; reinforcement

DOI: 10.14359/51685601

Date: 5/1/2013

Abstract:
The use of post-installed anchors for connections in both new and existing structures is commonplace and growing. A related type of post-installed connection that has been employed for decades is the bonding of reinforcing bars into holes drilled into concrete to facilitate structural extensions and strengthening of reinforced concrete structures. Although ACI 318-11 includes provisions for the design of adhesive anchors in concrete (anchor rods bonded with adhesive in a drilled hole), it does not address the design of post-installed reinforcing bars. This paper addresses the issue by providing background into the adhesive anchor design and development length provisions of ACI 318 as well as the provisions for post-installed reinforcing bars available in international standards. The paper makes recommendations for the development of a new procedure that is applicable to the design of post-installed reinforcing bars.