Configuration for improving bonding and corrosion resistance of reinforcement material

摘要

A coating for a reinforcing material, such as metal rebar, that increases the adhesion between the reinforcing material and a matrix, such as a cement-based mortar or concrete, in which the reinforcing material is embedded. The coating may comprise a glass frit mixed with a refractory material, such as dry Type I-II portland cement. The coating is bonded, typically by heat, to the surface of the reinforcing material. The reaction of the refractory component, e.g., portland cement, when the reinforcement, e.g., metal re-bar, is embedded in a matrix, e.g., fresh mortar or concrete, prevents the formation of soft precipitates at the interface of the matrix and its reinforcement. One coating comprises portland cement Type I-II combined with a commercial alkali-resistant glass frit. This coating is applied to a steel rebar and fired to bond to the rebar. The frit-refractory coating produces a strong bond between the metal rebar and concrete and may eliminate or significantly reduce the potential for corrosion of the rebar.

主权项

1. A configuration and a reinforcing material, said configuration affixed to said reinforcing material for forming a bond between said reinforcing material and an initially flowable matrix incorporating said reinforcing material, comprising: at least one frit, said at least one frit comprising at least a powdered alkali resistant glass frit compatible with said matrix and said reinforcing material; and refractory material compatible with said matrix, said refractory material comprising at least dry portland cement, said reinforcing material and said at least one frit, wherein said refractory material is combined with said at least one frit to yield at least one coating on said reinforcing material, and wherein at least one surface of said reinforcing material is prepared for accepting said at least one coating, and wherein said at least one coating comprising said at least one frit and said refractory material is fired at a temperature regime over a time period to form a coating comprising refractory material and frit wherein the frit flows and consolidates to form the fired coating.