Concrete piece prevents the method that falls off

摘要

PROBLEM TO BE SOLVED: To provide a method for preventing exfoliation by using a fall preventive net which can be bent and be cut off by normal scissors and others and which has sufficient strength to exfoliation.SOLUTION: In an exfoliation prevention method in which a fall preventive net 12 is stuck on the surface of a concrete skeleton 10 by a plurality of anchor pins 13 so as to prevent fall of exfoliated concrete pieces, the fall preventive net 12 is formed by weaving a fiber of a high strength vinylon-based fiber coated with a vinyl chloride resin having alkali resistance and flame proofness, and can be bent and be cut off by normal scissors. The distance between meshes in the fall preventive net 12 is smaller than the diameter of an aggregate of the concrete skeleton 10 and is larger than the diameter of the anchor pin 13.SELECTED DRAWING: Figure 4