American Society of Civil Engineers


Freeze—Thaw Resistance of Fiber-Reinforced Polymer Composites Adhesive Bonds with Underwater Curing Epoxy


by Roberto Lopez-Anido, (corresponding author), M.ASCE, (Assoc. Prof., Dept. of Civ. and Envir. Engrg. and Advanced Engineered Wood Composites Ctr., Univ. of Maine, Orono, ME 04469-5711 E-mail: rla@maine.edu), Antonis P. Michael, S.M.ASCE, (Grad. Res. Asst., Civ. and Coastal Engrg. Dept., Univ. of Florida, Gainesville, FL 32611-6580), and Thomas C. Sandford, M.ASCE, (Assoc. Prof., Dept. of Civ. and Envir. Engrg., Univ. of Maine, Orono, ME 04469-5711)

Journal of Materials in Civil Engineering, Vol. 16, No. 3, May/June 2004, pp. 283-286, (doi:  http://dx.doi.org/10.1061/(ASCE)0899-1561(2004)16:3(283))

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Document type: Technical Note
Abstract: A prefabricated fiber-reinforced polymer (FRP) composite shield or jacket was developed to repair wood piles in the field. Cylindrical E-glass/vinyl ester composite shells were bonded underwater to encase damaged wood piles. The resistance to freeze–thaw cycles of an underwater curing epoxy adhesive was evaluated. The standard test procedure for single-lap shear adhesion for FRP composite bonding, ASTM D5868, was selected. A standard procedure for freeze–thaw cycling exposure was adopted. The effect of freeze–thaw cycling exposure on the performance of the adhesive bond was discriminated by comparing the lap shear strength and the mode of failure of control and exposed samples. It was found that the lap shear strength is substantially reduced by exposure to freezing and thawing cycles. A change in the mode of failure from predominantly adhesive type to combined adhesive/cohesive type was noticed after exposure.


ASCE Subject Headings:
Bonding
Coating
Epoxy
Fiber reinforced polymer
Freeze and thaw
Piles
Underwater structures