Making use of the burying murder die cone placing stopgap manner null of the concrete structure which

摘要

PURPOSE: To for sufficiently cope with a problem of salt damage by accurately ensuring the covering (thickness ranging from concrete surface to separator holding nut) as a measure of preventing a steel material in a concrete structure from corrosion due to the salt damage. ;CONSTITUTION: While a cone body 12 is formed hollow integrated with cement or the like, a separator holding nut 13 is embedded integrally with one end of the hollow section 12a and the cone body 12 is formed elongated to have the total length equal to several times the length of the separator holding nut 13.;COPYRIGHT: (C)1993,JPO&Japio