Sprayable phosphate cementitious coatings and a method and apparatus for the production thereof
OwnerDavid M. Goodsoninventor
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Abstract
A sprayed-on phosphate cement coating formed from the combination and reaction of a phosphoric acid solution and a base metal solution. The acid solution and base solution may be intermixed prior to spraying, during spraying, or on a substrate. The curing reaction rate of the phosphate cement coating and its final physical properties may be controlled by adding various retardants, accelerants, reducers, wetting agents, superplasticizers, buffers, water reducers, adhesive agents, hardening agents, and/or sequestrants to the precursor solutions. The curing rate and properties of the cement coating may be further controlled by adjusting the temperature of the precursor solutions and/or the target substrate.
Claims16
A method of producing a phosphate cement coating, comprising the steps of:
- a) providing a surface to be spray coated;
- b) providing a first cementitious constituent;
- c) providing a second cementitious constituent adapted to combine with the first cementitious constituent to produce a phosphate cement coating;
- d) spraying the surface with the first cementitious constituent;
- e) spraying the surface with the second cementitious constituent;
- f) reacting the first and second cementitious constituents to produce a phosphate cement coating.
Dependencies are inferred from the claim text.