THE BOND BETWEEN REPAIR MATERIALS AND CONCRETE SUBSTRATE IN MARINE ENVIRONMENT

In this paper, the results of an experimental study of the bond between repair materials and concrete substrate in marine and crude oil environment is presented. Old concrete samples were made based on BS6319, Part 4 standard. Ordinary concrete, and concrete containing microsilica were used as repair materials. Repaired samples were cured in water curing tank and then held in the marine environment, or immersed in crude oil up to 180 days. The bond between repair materials and concrete substrate was evaluated based on slant shear test method. The work was also aimed at studying the effect of various factors such as initial curing periods and surface preparation method on bond strength. The obtained results are tabulated and presented in this paper.