Effect of weathering on polymer modified cement mortars used for the repair and waterproofing of concrete

The strength parameters and moisture permeability of the mortar, and bond strength between the base concrete and the mortar are the parameters that were considered to evaluate the samples. Specimens from both series are subjected to UV radiation and alternate wetting and drying, and the performance of the materials are assessed by comparing them with those obtained before weathering. The specimens were subjected to cycles of 8 hours exposure to UV light and 4 hours exposure to a relative humidity of 90%, following the ASTM G-154A standard, for 30 days.