How to mold road block units, road block covers and road block covers

摘要

PROBLEM TO BE SOLVED: To provide a road block unit useful for improving durability.SOLUTION: A road block unit 1 has a resin cover 2, and a concrete block 3 joined to the cover 2. The cover 2 has a first face 41 that covers at least part of the block 3, and a plurality of protrusions 6 scattered on the first face 41 and contained in the block 3.SELECTED DRAWING: Figure 1