Composite jackets for rehabilitation of damaged reinforced concrete pier caps

Mohamed Nazier, James W Giancaspro, P. Balaguru

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A fiber-reinforced polymer (FRP) composite jacket was constructed to rehabilitate a damaged reinforced concrete pier cap of a bridge in Rhode Island. The unique feature of the construction was the use of in-situ vacuum-bagging technique. The reinforced concrete pier cap was damaged due to corrosion of steel reinforcement leading to spalling of the concrete cover. The two composite jackets covered the top and sides of two pier caps that were 15.5 meters long, 1 meter wide, and 1.2 meters deep. The composite jacket consisted of fiberglass reinforcement and epoxy matrix. This experimental research project was undertaken to evaluate whether the vacuum-bagging technique commonly used by the aerospace industry can be adopted for bridges under field conditions. The results indicate that the technique is viable and provides much better bonds to weathered concrete surface by eliminating the air bubbles and air pockets at the concrete-FRP interface. The construction details outlined in this paper consist of surface cleaning, priming, fabric application, vacuum bagging, and post-curing. The long-term performance of the composite jacket is currently under evaluation.

Original languageEnglish (US)
Title of host publicationInternational SAMPE Symposium and Exhibition (Proceedings)
Pages1011-1024
Number of pages14
Volume50
StatePublished - 2005
Externally publishedYes
Event50th International SAMPE Symposium and Exhibition - Long Beach, CA, United States
Duration: May 1 2005May 5 2005

Other

Other50th International SAMPE Symposium and Exhibition
CountryUnited States
CityLong Beach, CA
Period5/1/055/5/05

Fingerprint

Piers
Patient rehabilitation
Reinforced concrete
Composite materials
Concretes
Reinforcement
Polymers
Vacuum applications
Vacuum
Surface cleaning
Bridge piers
Spalling
Fibers
Aerospace industry
Steel
Air
Curing
Corrosion

Keywords

  • Infrastructure
  • Rehabilitation
  • Vacuum Bagging

ASJC Scopus subject areas

  • Building and Construction
  • Chemical Engineering(all)
  • Polymers and Plastics
  • Chemical Engineering (miscellaneous)

Cite this

Nazier, M., Giancaspro, J. W., & Balaguru, P. (2005). Composite jackets for rehabilitation of damaged reinforced concrete pier caps. In International SAMPE Symposium and Exhibition (Proceedings) (Vol. 50, pp. 1011-1024)

Composite jackets for rehabilitation of damaged reinforced concrete pier caps. / Nazier, Mohamed; Giancaspro, James W; Balaguru, P.

International SAMPE Symposium and Exhibition (Proceedings). Vol. 50 2005. p. 1011-1024.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nazier, M, Giancaspro, JW & Balaguru, P 2005, Composite jackets for rehabilitation of damaged reinforced concrete pier caps. in International SAMPE Symposium and Exhibition (Proceedings). vol. 50, pp. 1011-1024, 50th International SAMPE Symposium and Exhibition, Long Beach, CA, United States, 5/1/05.
Nazier M, Giancaspro JW, Balaguru P. Composite jackets for rehabilitation of damaged reinforced concrete pier caps. In International SAMPE Symposium and Exhibition (Proceedings). Vol. 50. 2005. p. 1011-1024
Nazier, Mohamed ; Giancaspro, James W ; Balaguru, P. / Composite jackets for rehabilitation of damaged reinforced concrete pier caps. International SAMPE Symposium and Exhibition (Proceedings). Vol. 50 2005. pp. 1011-1024
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