[en] Repair and strengthening of existing concrete structures are among the biggest challenges civil
engineers are facing today and will have to face in the years to come. Present concerns of sustainable
development emphasizing repair instead of new construction will only strengthen this trend. Concerted efforts
towards improving the durability of concrete repairs are still needed from scientists and engineers. One of the
critical aspects of durability of concrete repairs and overlays is lasting and sufficient interfacial bond between repair material and existing concrete substrate. This paper summarizes some of the findings of a collaborative study devoted to the most significant factors influencing bond in repairs (roughness, degree of saturation and carbonation of the substrate) and its field evaluation (type of loading, device misalignment). Based on the test results collected in different test programs, guideline-type recommendations for surface preparation prior to repair were issued.
Disciplines :
Civil engineering
Author, co-author :
Bissonnette, Benoît; Université Laval
Courard, Luc ; Université de Liège - ULiège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
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