Durability evaluation of advanced composite technologies for structural rehabilitation

Zahra Karim, Francisco De Caso y Basalo, Antonio Nanni

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

Abstract

Externally bonded composite systems have become an attractive alternative to conventional methods for strengthening and rehabilitating the built infrastructure, particularly as applied reinforced concrete (RC) or masonry structures. Such systems can be classified based on the matrix, where the established technology uses organic-based matrices, known as fiber reinforced polymer (FRPs) composite systems, and novel alternatives use inorganic-based matrices, referred to as fabric reinforced cementitious matrix (FRCM) composites. Both types of systems rely on the bond between the composite and the substrate to transfer stresses through the matrix to the fiber/fabric. Bond is of critical importance in flexural strengthening applications, where delamination failure occurs between the substrate and system due to loss of bond. Although numerous research studies have demonstrated the effectiveness of externally bonded systems, the long-term performance with regards to the durability of the system remains a key concern to be addressed, to fully embrace such structural rehabilitations solutions. The long-term study performance of composite systems under aggressive environments is partial and generally focused on mechanical properties only, where studies addressing the durability performance in terms of the tensile characteristics have shown that FRP systems exhibit a mechanical degradation, while FRCM systems remain relatively unchanged. However, evaluating the durability of the bond between the composite and substrate is a critical aspect, and limited information is available. To this end, this study experimentally evaluates the tensile and bond strength of different FRP and FRCM composite systems after aging in different environments and periods of exposure; including, 100 % relative humidity at 38°C, saltwater, and alkali solution (pH 9.5), representative of aggressive service environments.

Original languageEnglish (US)
Title of host publicationREHABEND 2016 - 6th REHABEND Congress on Construction Pathology, Rehabilitation Technology and Heritage Management
EditorsLuis Villegas, Haydee Blanco, Yosbel Boffill, Ignacio Lombillo
PublisherUniversity of Cantabria - Building Technology R&D Group
Pages1905-1911
Number of pages7
Volume2016-May
ISBN (Print)9788460879411
StatePublished - Jan 1 2016
Event6th Euro-American Congress on Construction Pathology, Rehabilitation Technology and Heritage Management, REHABEND 2016 - Burgos, Spain
Duration: May 24 2016May 27 2016

Other

Other6th Euro-American Congress on Construction Pathology, Rehabilitation Technology and Heritage Management, REHABEND 2016
CountrySpain
CityBurgos
Period5/24/165/27/16

Fingerprint

durability
Patient rehabilitation
rehabilitation
Large scale systems
Durability
matrix
Fibers
Composite materials
evaluation
Polymers
Substrates
polymer
Bond strength (materials)
substrate
Delamination
Reinforced concrete
Atmospheric humidity
Tensile strength
Aging of materials
masonry

Keywords

  • Bond
  • Durability
  • FRCM
  • FRP
  • Inorganic
  • Organic

ASJC Scopus subject areas

  • Mechanics of Materials
  • Building and Construction
  • Geography, Planning and Development
  • Cultural Studies
  • Urban Studies

Cite this

Karim, Z., De Caso y Basalo, F., & Nanni, A. (2016). Durability evaluation of advanced composite technologies for structural rehabilitation. In L. Villegas, H. Blanco, Y. Boffill, & I. Lombillo (Eds.), REHABEND 2016 - 6th REHABEND Congress on Construction Pathology, Rehabilitation Technology and Heritage Management (Vol. 2016-May, pp. 1905-1911). University of Cantabria - Building Technology R&D Group.

Durability evaluation of advanced composite technologies for structural rehabilitation. / Karim, Zahra; De Caso y Basalo, Francisco; Nanni, Antonio.

REHABEND 2016 - 6th REHABEND Congress on Construction Pathology, Rehabilitation Technology and Heritage Management. ed. / Luis Villegas; Haydee Blanco; Yosbel Boffill; Ignacio Lombillo. Vol. 2016-May University of Cantabria - Building Technology R&D Group, 2016. p. 1905-1911.

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

Karim, Z, De Caso y Basalo, F & Nanni, A 2016, Durability evaluation of advanced composite technologies for structural rehabilitation. in L Villegas, H Blanco, Y Boffill & I Lombillo (eds), REHABEND 2016 - 6th REHABEND Congress on Construction Pathology, Rehabilitation Technology and Heritage Management. vol. 2016-May, University of Cantabria - Building Technology R&D Group, pp. 1905-1911, 6th Euro-American Congress on Construction Pathology, Rehabilitation Technology and Heritage Management, REHABEND 2016, Burgos, Spain, 5/24/16.
Karim Z, De Caso y Basalo F, Nanni A. Durability evaluation of advanced composite technologies for structural rehabilitation. In Villegas L, Blanco H, Boffill Y, Lombillo I, editors, REHABEND 2016 - 6th REHABEND Congress on Construction Pathology, Rehabilitation Technology and Heritage Management. Vol. 2016-May. University of Cantabria - Building Technology R&D Group. 2016. p. 1905-1911
Karim, Zahra ; De Caso y Basalo, Francisco ; Nanni, Antonio. / Durability evaluation of advanced composite technologies for structural rehabilitation. REHABEND 2016 - 6th REHABEND Congress on Construction Pathology, Rehabilitation Technology and Heritage Management. editor / Luis Villegas ; Haydee Blanco ; Yosbel Boffill ; Ignacio Lombillo. Vol. 2016-May University of Cantabria - Building Technology R&D Group, 2016. pp. 1905-1911
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