Abstract
Determining long-term behavior of bonded CFRP systems requires developing an accelerated aging test method for CFRP applications. This paper examines the development of test methodology and specimen for both flexure and direct tension behavior of bonded CFRP materials using a specimen submerged in a water bath subject to elevated temperature. Test results of three commercial CFRP systems are presented. A discussion of accelerated aging is included in the developmental effort.
Issue Section:
Research Papers
References
1.
Bank
, L. C.
and Gentry
, T. R.
, “Accelerated Test Methods to Determine the Long-Term Behavior of FRP Composite Structures: Environmental Effects
,” J. Reinf. Plast. Compos.
0731-6844, Vol. 14
, 1995
, pp. 558
–587
.2.
Byars
, E. A.
, Waldron
, P. W.
, Dejke
, V.
, and Demis
, S.
, “Durability of FRP in Concrete: Deterioration Mechanisms
,” Proceedings, FRP Composites in Civil Engineering
, Vol. II
, Elsevier
, Hong Kong
, Dec. 2001
, pp. 1517
–1525
.3.
Byars
, E. A.
, Waldron
, P. W.
, Dejke
, V.
, and Demis
, S.
, “Durability of FRP in Concrete: Current Specifications and a New Approach
,” Proceedings, International Journal of Materials and Product Technology
, Vol. 19
, Nos. 1–2
, 2003
, pp. 40
–52
.4.
Chajes
, M. J.
, Finch
, W. W.
, Januszka
, T. F.
, and Thomson
, T. A.
, “Bond and Force Transfer of Composite Material Plates Bonded to Concrete
,” ACI Structural Journal
, Vol. 93
, No. 2
, March-April, 1996
, pp. 209
–217
.5.
Toutanji
, H. A.
and Gomez
, W.
, “Durability Characteristics of Concrete Beams Externally Bonded with FRP Composite Sheets
,” Cem. Concr. Compos.
0958-9465 https://doi.org/10.1016/S0958-9465(97)00028-0, Vol. 19
, 1997
, pp. 351
–358
.6.
Grace
, N. F.
and Singh
, S. B.
, “Durability Evaluation of Carbon Fiber-Reinforced Polymer Strengthened Concrete Beams: Experimental Study and Design
,” ACI Structural Journal
, Vol. 102
, No. 1
, Jan.-Feb. 2005
, pp. 40
–53
.7.
NCHRP Report 514: “
Bonded Repair and Retrofit of Concrete Structures Using FRP Composites—Recommended Construction Specifications and Process Control Manual
,” 2004
.8.
Lefebvre
, D. R.
, Takahashi
, K. M.
, Muller
, A. J.
, and Raju
, V. R.
, “Degradation of Epoxy Coatings in Humid Environments: The Critical Relative Humidity for Adhesion Loss
,” J. Adhes. Sci. Technol.
0169-4243, Vol. 5
, No. 3
, 1991
, pp. 221
–227
.9.
Au
, C.
and Buyukozturk
, O.
, “Peel and Shear Fracture Characterization of Debonding in CFRP Plated Concrete Affected by Moisture
,” J. Compos. Constr.
1090-0268 https://doi.org/10.1061/(ASCE)1090-0268(2006)10:1(35), Vol. 10
, 2006
, pp. 35
–47
.10.
Malvar
, L. J.
, Joshi
, N. R.
, Beran
, J. A.
, and Novison
, T.
, “Environmental Effects on the Short-Term Bond of Carbon Fiber-Reinforced Polymer (CFRP) Composites
,” J. Compos. Constr.
1090-0268, Vol. 7
, No. 1
, Feb. 2003
, pp. 58
–63
.11.
Karbhari
, V. M.
and Engineer
, M.
, “Effect of Environmental Exposure on the External Strengthening of Concrete with Composites-Short-Term Bond Durability
,” J. Reinf. Plast. Compos.
0731-6844, Vol. 15
, No. 12
, 1996
, pp. 1194
–1216
.12.
Abanilla
, M. A.
, Li
, Y.
, and Karbhari
, V. M.
, “Durability Characterization of Wet Layup Carbon/Epoxy Composites Used in External Strengthening
,” Composites: B 2006
, Vol. 37
, No. 1–2
, 2006
, pp. 200
–212
.13.
Abanilla
, M. A.
, Li
, Y.
, and Karbhari
, V. M.
, “Interlaminar and Intralaminar Durability Characterization of Wet Layup Carbon/Epoxy Composites Used in External Strengthening
,” Composites: B 2006
, Vol. 37
, No. 7–8
, 2006
, pp. 650
–661
.14.
Karbhari
, V. M.
and Abanilla
, M. A.
, “Design Factors, Reliability, and Durability Prediction of Wet Layup Carbon/Epoxy Composites Used in External Strengthening
,” Composites: B 2006
, Vol. 38
, No. 1
, 2007
, pp. 10
–23
.15.
Toutanji
, H. A.
and Gomez
, W.
, “Durability Characteristics of Concrete Columns Confined with Advanced Composite Materials
,” Composite Structures
, Vol. 44
, 1999
, pp. 155
–161
.16.
Dolan
, C. W.
, Ahearn
, E. A.
, Deng
, J.
, Tanner
, J. E.
, and Mukai
, D.
, “Durability and Accelerated Ageing Testing of CFRP Repair System
,” 4th International Conference on FRP Composites in Civil Engineering
, (CICE2008) 22–24 July 2008
, Zurich
, Switzerland
.17.
Dai
, J. G.
“Interfacial Models for Fiber Reinforced Polymer (FRP) Sheets Externally Bonded to Concrete
,” Ph.D. Dissertation, Hokkaido University
, Japan, 2003
.18.
Toutanji
, H.
and Ortiz
, G.
, “The Effect of Surface Preparation on the Bond Interface between FRP Sheets and Concrete Members
,” Composite Structures
, Vol. 53
, 2001
, pp. 457
–462
.19.
Lorenzis
, L. D.
, Miller
, B.
, and Nanni
, A.
, “Bond of Fiber-Reinforced Polymer Laminates to Concrete
,” ACI Mater. J.
0889-325X, Vol. 98
, No. 3
, May-June 2001
, pp. 256
–264
.20.
Li
, W. W.
, Yan
, Z. L.
, Cao
, Z. L.
, and Pan
, J. L.
, “Effect of Concrete Surface Roughness on the Bonding Performance between the CFRP and Concrete
,” Journal of Shenzhen University Science and Engineering
, Vol. 24
, No. 1
, Jan. 2007
.21.
ASTM Standard C78-02, “
Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading
,” Annual Book of ASTM Standards
, ASTM International
, West Conshohocken, PA
.22.
ASTM Standard D4541-02, “
Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion Testers
,” Annual Book of ASTM Standards
, ASTM International
, West Conshohocken, PA
.23.
Karbhari
, V. M.
, “Characteristics of Adhesion between Composites and Concrete as Relate to Infrastructure Rehabilitation
,” 27th International SAMPE Technical Conference
, 9–12 Oct. 1995
.24.
Teng
, J. G.
, Chen
, J. F.
, Smith
, S. T.
, and Lam
, L.
, “Behaviour and Strength of FRP-Strengthened RC Structures: A State-of-the-Art Review
,” Proceedings of the Institution of Civil Engineering—Structures and Buildings
, Vol. 156
, No. 1
, 2003
, pp. 51
–62
.25.
Gartner
, A. L.
, “Development of a Flexural Bond Strength Test to Determine Environmental Degradation of Carbon Fiber-Reinforced Polymer (CFRP) Composites Bonded to Concrete
,” MS Thesis, University of Florida
, March 2007
.26.
Abanilla
, M. S.
, Li
, Y.
, and Karbhari
, V. M.
, “Durability Characterization of Wet Layup Graphite/Epoxy Composites Used in External Strengthening
,” Composites, Part B: Engineering
1359-8368, Vol. 37
, No. 2–3
, April 2005
/March 2006
, pp. 200
–212
.27.
Horiguchi
, T.
and Saeki
, N.
“Effect of Test Methods and Quality of Concrete on Bond Strength of CFRP Sheet
,” Non-Metallic (FRP) Reinforcement for Concrete Structures, Proceedings of the 3rd International Symposium
, Vol. 1
, Oct. 1997
.28.
Mays
, G. C.
and Hutchinson
, A. R.
, Adhesives in Civil Engineering
, Chapter 2, Cambridge University Press
, Cambridge, U.K.
, 1992
.
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