LIMESTONE MASONRY VENEER, RESURFACING AND AESTHETIC OVERLAY COMPOSITIONS, METHODS OF MAKING AND METHODS OF USE

摘要

A limestone based masonry veneer composition is described that may be molded, blown, sprayed, troweled, or otherwise applied to interior and exterior surfaces. The composition provides an aesthetic resurfacing, cladding and/or overlay coating. The composition is capable of being pigmented, textured, sculpted—or otherwise formed into an aesthetic, realistic, architecture, suitable as a stone veneer, an example of which is Blown Stone®, by Stone Coat®. Texturing or sculpting may occur about 1 hour and up to about 12 hours after applying the composition. The final composition is hydrophobic and breathes. Air carbonation allows the formation of a predominantly very pure calcium carbonate or limestone when fully cured, which prevents mold and algae growth and allows for autogenous healing with an increase in unit weight over time, ensuring an overall high compressive strength that endures over time.

主权项

1. A formulation comprising:
dry ingredients that include:
a hydraulic binder in an amount between about 10 wt. % and about 16 wt. % based on a dry weight of the formulation, the hydraulic binder including at least a natural hydraulic lime of NHL grade 3.5 or NHL grade 5 and optionally a cementitious binder, in which the cementitious binder can replace up to 60% of the natural hydraulic lime; andan aggregate comprising natural limestone, the aggregate being initially screened with a mesh that is a number 6 mesh, a number 40 mesh or a mesh of a size there between, wherein the aggregate is in an amount between about 70 wt. % and about 90 wt. % based on the dry weight of the formulation; and water, wherein the water is in an amount so that the ratio of water to cubic feet of dry ingredients is between about 1.5:1.0 to about 2.0:1.5.