It is well known that in order to ensure the thickness of the protective layer of steel, it is often necessary to preform the mortar pad at the construction site.
This kind of mortar premade cushion block is generally made of M15 mortar: first, the mortar is smoothed and compacted according to the thickness of steel reinforcement protective layer on the ground; after its initial solidification, the mortar is divided into small pieces about 30mm square by a tile; and two iron wires about 20cm long are pressed
