US 10,766,817 B2Granted

Chemical substitutions for portland cement mixtures and applications therefor

AssigneeSurface Tech LLC

InventorBryan Goerger

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Abstract

Embodiments of the invention enhance the performance of concrete mixtures, and have the flexibility to be used in both a variety of traditional poured concretes, as well as in sprayed concrete applications and geotechnical solutions which is commonly considered a cement application. It is an aspect of the present invention to provide a cementitious material comprising fly ash, wollastonite and nepheline syenite which is flexible enough in nature and chemistry to be used in a variety of concrete application which are poured and sprayed, as well as in blended into and within traditional cement applications. The use of a graduated blend of mineral fibers and industrial minerals also provide marked benefits to reduce both project cost and environmental impact.

Claims15

Dependent claims

A dry cementitious mixture comprising:

stone, sand, Portland cement, fly ash and mineral fibers mixed together to produce a dry cementitious mixture having roughly uniform ingredient distribution and a total weight, wherein
a weight of the stone is between 40 and 50% of the total weight;
a weight of the sand is between 30 and 40% of the total weight;
a weight of the Portland cement is between 10 and 15% of the total weight;
a weight of the fly ash is between 5 and 10% of the total weight;
and
a weight of the mineral fibers is between 0.5 and 2% of the total weight, the mixture further comprising:
wollastonite as a portion of the fly-ash component, a weight of the wollastonite being between 1% and 7.5% of the total weight, and wherein
said wollastonite made up of at least one grade of powder wollastonite and at least one grade of anisotropic wollastonite particles.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/888,017Filed 3 Feb 2018
Published: US 2019/0241473 A18 Aug 2019
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C04B 28/04
Containing hydraulic cements other than calcium sulfates: portland cements
C04B 14/06
Silica-rich materials; Silicates: quartz; Sand
C04B 14/38
Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially…:…
C04B 18/08
Combustion residues, e.g. purification products of smoke, fumes or exhaust gases: flue dust , i.e. fly ash

Family

US 2019/0241473 A1Pre-grant publication · published 8 Aug 2019
US 10,766,817 B2This patent

From the US filing history. Foreign family members aren’t listed.

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