ABSTRACT
The largest half-amplitude values (1.50-3.75 mm) were obtained with the jack hammer and hydrojetting, while the lowest values were recorded respectively for the scarified, the shotblasted and the sandblasted surfaces (<1.00 mm). It could also be observed that for
1 INTRODUCTION
The general objectives of the research work reported in this paper are to provide the industry with guidelines for selecting the surface preparation method that will yield the best results with regard to bond strength and durability. In addition, the identification of performance criteria will enable a field assessment of the quality of surface preparation prior to repair works. The specific objectives of the project are to evaluate the respective influence of roughness and mechanical integrity of the prepared surface on bond strength development.
