Contemplated compositions and methods for protection of concrete and various other cementitious materials comprise a step of formation of a mesoporous polymeric network within the concrete or other cementitious material, wherein the network further includes a cationic component that forms a substantially insoluble precipitate upon reaction with sulfuric acid to so form a composite barrier against further attack by sulfuric acid.

Systems and methods for treating concrete, which includes the steps of wetting a surface of concrete with a amorphous colloidal silica, allowing time for the colloidal silica to penetrate the concrete surface, and cutting the surface of the concrete with a bladed tool wherein the longitudinal blade portion is positioned approximately at an angle between 30 degrees and 90 degrees relative to the surface of the concrete.

A synthetic acid composition for replacement of hydrochloric acid in industrial activities requiring large amounts of hydrochloric acid, said composition comprising: urea and hydrogen chloride in a molar ratio of not less than 0.1:1; a metal iodide or iodate; an alcohol or derivative thereof. Optionally, formic acid or a derivative thereof; propylene glycol or a derivative thereof, ethylene glycol glycerol or a mixture thereof; cinnamaldehyde or a derivative thereof; and a phosphonic acid derivative can be added to the composition.

A process for providing a fiber cement product is provided the process comprising the steps of:providing an uncured fiber cement product;curing said uncured fiber cement product;drying said cured fiber cement product to obtain a humidity of said cured fiber cement product being less than or equal to about 8% w;abrasive blasting at least part of the surface of said dried fiber cement product.

Disclosed are surface retarder composition and method for etching cementitious materials which achieve a desirable light acid etch look without using muriatic (hydrochloric) acid or sand blasting, removing the human health and environmental concerns. Formulations in accordance with embodiments disclosed herein are easier to remove from formwork or molds after demolding than conventional retarder paints. Surface retarders prevent the hydration of cement particles, which allows the uncured layer of paste next to the form to be removed such as by washing with water or other fluids, or by brushing, revealing aggregates. Also disclosed are molded cement and concrete materials or articles exhibiting such light etch.

Disclosed are surface retarder composition and method for etching cementitious materials which achieve a desirable light acid etch look without using muriatic (hydrochloric) acid or sand blasting, removing the human health and environmental concerns. Formulations in accordance with embodiments disclosed herein are easier to remove from formwork or molds after demolding than conventional retarder paints. Surface retarders prevent the hydration of cement particles, which allows the uncured layer of paste next to the form to be removed such as by washing with water or other fluids, or by brushing, revealing aggregates. Also disclosed are molded cement and concrete materials or articles exhibiting such light etch.

A terrazzo product including a first primer layer on an upper surface of a concrete substrate; a second primer layer on the first primer layer; a seed layer on the second primer layer, the seed layer including one or more of sand and shot; a terrazzo layer on the seed layer, the terrazzo layer including, by weight, 57% calcium sulfoaluminate (CSA) cement, 29% white milk glass, and 14% of one or more of broken mirrored glass and colored glass; a first joint filler in one or more cuts formed in the terrazzo layer; a concrete densifier within one or more of the first joint filler, the terrazzo layer, the seed layer, the second primer layer, the first primer layer, and at least a portion of the concrete substrate; and a sealer on the terrazzo layer and the first joint filler.

A terrazzo product including a first primer layer on an upper surface of a concrete substrate; a second primer layer on the first primer layer; a seed layer on the second primer layer, the seed layer including one or more of sand and shot; a terrazzo layer on the seed layer, the terrazzo layer including, by weight, 57% calcium sulfoaluminate (CSA) cement, 29% white milk glass, and 14% of one or more of broken mirrored glass and colored glass; a first joint filler in one or more cuts formed in the terrazzo layer; a concrete densifier within one or more of the first joint filler, the terrazzo layer, the seed layer, the second primer layer, the first primer layer, and at least a portion of the concrete substrate; and a sealer on the terrazzo layer and the first joint filler.

The present invention relates to an artificial marble including a first composition including a first binder resin, a first inorganic particle, and first inorganic powder; and a second composition including a second binder resin, a second inorganic particle, and second inorganic powder, wherein at least one surface of the artificial marble includes at least two regions among a region provided with the first composition, a region provided with the second composition, and a region where the first composition and the second composition are mixed, and at least one of a surface roughness, a scratch resistance, and a thickness in each of the at least two regions is different, and also relates to a method for manufacturing the artificial marble.

The present invention relates to an artificial marble including a first composition including a first binder resin, a first inorganic particle, and first inorganic powder; and a second composition including a second binder resin, a second inorganic particle, and second inorganic powder, wherein at least one surface of the artificial marble includes at least two regions among a region provided with the first composition, a region provided with the second composition, and a region where the first composition and the second composition are mixed, and at least one of a surface roughness, a scratch resistance, and a thickness in each of the at least two regions is different, and also relates to a method for manufacturing the artificial marble.