Steel post having corrosion control property for embedded part

Abstract

A steel post superior in corrosion controllability of its embedded part even when marked for territory by dogs, that is, a steel post having corrosion controllability of an embedded part comprising a steel post having a corrosion-proofing coating or a zinc-based plating corrosion-proofing material which is provided with a coating layer comprised of a corrosion-proofing material superior in durability against an aqueous solution containing ammonium ions along the outside of the steel post to at least 50 mm up to the atmosphere side and down to the embedded material side at a top end of an interface where the steel post and material embedded in contact each other.

1 . A steel post having corrosion controllability of an embedded part comprising a steel post having a corrosion-proofing coating which is provided with a coating layer comprised of a corrosion-proofing material superior in durability against an aqueous solution containing ammonium ions along the outside of the steel post to at least 50 mm up to the atmosphere side and down to the embedded material side at a top end of an interface where the steel post and material embedded in contact each other.  
   
   
       2 . A steel post having corrosion controllability of an embedded part comprising a steel post having a zinc-based plating corrosion-proofing material superior in durability against an aqueous solution containing ammonium ions along the outside of the steel post to at least 50 mm up to the atmosphere side and down to the embedded material side at a top end of an interface where the steel post and material embedded in contact each other.  
   
   
       3 . A steel post having corrosion controllability of an embedded part as set forth in  claim 1  or  2 , wherein said corrosion-proofing material is a corrosion resistant metal material of a thickness of at least 0.1 mm having an organic resin binder layer at the steel post side.  
   
   
       4 . A steel post having corrosion controllability of an embedded part as set forth in  claim 1  or  2 , wherein said corrosion-proofing material is an epoxy-based coating of a thickness of at least 50 μm containing 1 wt % to 30 wt % of a pigment having an ability to neutralize ammonium ions.