Effects of environmental factors on the adhesion and durability characteristics of epoxy-bonded concrete prisms


Colak A., Cosgun T. , Bakirci A. E.

Construction and Building Materials, vol.23, no.2, pp.758-767, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 2
  • Publication Date: 2009
  • Doi Number: 10.1016/j.conbuildmat.2008.02.013
  • Title of Journal : Construction and Building Materials
  • Page Numbers: pp.758-767
  • Keywords: Epoxy adhesives, Concrete, Bond stability, Environmental factors, TEMPERATURE CRACK-PROPAGATION, FRACTURE-TOUGHNESS, MECHANICAL-PROPERTIES, SPHERULITIC CRYSTALLIZATION, SURFACE-TREATMENT, ALUMINUM-ALLOY, JOINTS, WATER, BEHAVIOR, GLASS

Abstract

This work is concerned with the effects of environmental factors on the adhesion and durability characteristics of epoxy-bonded concrete prisms. The results indicate that the presence of liquid water at the interfacial zone during the epoxy injection process disrupts the initial bond configurations. The freezing and thawing up to about 40 cycles do not have a significant effect on the bond stability. An adequate degree of chemical stability is maintained in the bond line by the epoxy adhesives after 120 days of exposure to corrosive environments such as MgSO(4) and MgCl(2). However, there is a pronounced effect of these chemical substances on the concrete strength. The load-bearing capacity of epoxy-bonded concrete prisms decreases with increasing temperature. Despite this fact, the EP3-bonded concrete prisms give relatively high joint strengths at temperatures up to 100 degrees C. (C) 2008 Elsevier Ltd. All rights reserved.