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Rainstopper - Model QSR -Rehabilitation Concrete
QSR provides a system fortherehabilitationof concrete or masonry benches and inverts andthe repairing of voids in concrete or masonry substrates prior to the application of Strong-Seal® products. QSR is a rapid-setting, hand-mixed, hand-applied calcium aluminate cement product blended with pozzolans, lightweight aggregate, alkaline-resistant fiberglass reinforcement, and performance enhancing admixtures used to form a patching material or monolithic liner. QSR is specifically formulated for applications with a pH of 2.0 or higher.
Confirm substrateisclean and free of all foreign material and isdamp without noticeable free water droplets or running water prior to application.
For invert repair: quickly and firmly apply by hand/trowel up to one (1) inch thick in one or more passes starting from the bottom of invert; however, minimum total thickness shall not be less than ½ inch.
For bench repair: quickly and firmly apply by hand/trowel to bench so that a gradual slope is produced from the walls to the invert or center of the bench. Provide a ½ inch minimum thickness at the invert or center. Round the wall/bench intersection to a uniform radius.
For void repair: quickly and firmly apply by hand or trowel so that void is filled completely.
Trowel the surface to a smooth finish being careful not to over trowel. Apply a wetbrush finish to the troweled surface