Holcim RMHS Type II Masonry Cement - Masonry Cement​ is specially-formulated to ensure a uniform texture and color at a quality level that can be used for almost any brick, block and stone masonry construction. It is composed of Portland cement, plasticizers and air entraining additives. Holcim proportions masonry segments at the plant under controlled conditions in a single blending operation which provides a more uniform mortar and eliminates the need to batch cement and mortars in the field.