PRE MIX GM • 4,000 PSI 80# Bag Quikrete® Concrete Mix Portland, Sand, Stone, Gravel, ... 1/4 Lime 8" x 8" x 16" Concrete Masonry Units Same as Above 1 Portland 2500 1 Masonry N ... can be modified with acrylic fortifier and applied to other structural wall surfaces such as brick, concrete and terra cotta tile which are nonporous.