Comparison of bond strength analysis on the interfacial layer of old and new concrete using latex, epoxy and glycoluril

Abstract

Abstract Though other methods were updated for repairing a concrete structure, improving the bond strength of the interfacial layer with effective additives is still the remarkably outstanding technique since it highly improves the structure without any compromise with the quality and strength parameters. The primary reason for the investigation is to compare the market available materials like epoxy and latex with polymer based binding material named glycoluril by slant shear test in both compression and tension. In this comparative study, epoxy bonding depicts higher bond strength in compression than the latex bonding, whereas 3% of glycoluril bonding in the interfacial layer provided for 1cm thick in the interfacial layer were noted to improve the tensile bond strength between the old and new concrete layers which turns to be effective in the repair works of bottom of the slab/beam where tension is more.