Printed step prefabricated reinforced concrete for constructing stair of building, has mortar layer overlying concrete body and consisting of quartz sand, and slurry provided on board, where surface treatment is performed on mortar layer

摘要

The concrete has a fingerprint (1) and a riser (2), and a mortar layer (3) overlying a concrete body (4). Slurry is provided on a board. The mortar layer consists of quartz sand. Surface treatment is performed on the mortar layer using acrylic resin or toluene. Small projection of the fingerprint is performed above the riser. A deformable mold is placed on a shaker table.