Title: Effect of Common Surface Pretreatments on Shear Strength of Bonded Concrete Overlays
Author(s): Andrew S. Pultorak and Frederick R. Rutz
Publication: Concrete International
Appears on pages(s): 55-60
Keywords: bond, substrate, bonding agent, moisture
Concrete repairs frequently involve placing a new concrete surface (overlay) on existing concrete (substrate). In this study, pull-off, direct shear, and jacking tests were used to evaluate the bond of overlays applied to mechanically roughened and cleaned substrates. Test parameters included substrate moisture condition and the use of cement slurry bonding agent.