Generic Debonding Resistance of EB and NSM Plate-to-Concrete Joints

It is well established that adhesively bonding plates to the surfaces of reinforced concrete members is an efficient retrofitting approach. Specifically, 2 techniques have emerged: Using thin externally bonded (EB) sheets/plates and near-surface mounted (NSM) strips/bars. A good amount of research has been conducted worldwide to understand the fundamental behavior describing such adhesively bonded plate-to-concrete joints. Unfortunately, until now, no generic model exists to determine the debonding resistance of both retrofitting techniques. In this paper, a generic analytical model is derived to determine the debonding resistance of any adhesively bonded plate-to-concrete joint using an idealized linear-softening local interface bond-slip relationship. The model is derived using a unique definition of the debonding failure plane and confinement ratio such that it is suitable for both the externally bonded and near-surface mounted techniques. The model is validated by comparison with existing push-pull data as well as 14 new push-pull tests with varying plate cross-section aspect ratios. Comparison with an existing well-known model demonstrates the suitability of the proposed generic model. The model can be used to predict the intermediate crack debonding resistance of strengthened reinforced concrete members.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10900268
• Supplemental Notes:
  • Abstract reprinted with permission from ASCE
• Authors:
  • Seracino, R
  • Saifulnaz, M R Raizal
  • Oehlers, D J
• Publication Date: 2007-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 62-70
• Serial:
  • Journal of Composites for Construction
  • Volume: 11
  • Issue Number: 1
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0268
  • EISSN: 1943-5614
  • Serial URL: http://ascelibrary.org/journal/jccof2

Subject/Index Terms

• TRT Terms: Bonding and joining; Composite materials; Debonding; Fiber reinforced plastics; Joints (Engineering); Plates (Engineering); Rehabilitation (Maintenance); Reinforced concrete; Retrofitting; Strengthening (Maintenance); Structural members; Structural models
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01045138
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 17 2007 8:45PM