Acid-resistant inorganic composite material and method of forming same

Patent metadata

Field	Value
Publication number	US-2022340487-A1
Application number	US-202017635320-A
Country	US
Kind code	A1
Filing date	Aug 11, 2020
Priority date	Aug 12, 2019
Publication date	Oct 27, 2022
Grant date	—

Abstract

Acid-resistant composite materials and methods of forming acid resistant composite materials are disclosed. The acid resistant composite materials can include one or more monovalent, divalent, or polyvalent cationic metals. The acid resistant composite materials can be used, for example, in the formation of concreate or as a coating for concrete.

First claim

1 . An acid-resistant composite material comprising:
greater than 0% to about 75% or about 40% to about 60% SiO 2 ; greater than 0% to about 75% or about 30% to about 50% Al 2 O 3 ; about 1% to about 25% or about 1% to about 20% CaO; greater than 0% to about 25%, or about 0.1% to about 10%, or about 1% to about 10% one or more monovalent, divalent, or polyvalent cationic metals; and greater than 0% to about 25%, or about 0.1% to about 10%, or about 1% to about 10% one or more other inorganic materials.

2 . The acid-resistant composite material of claim 1 , wherein the one or more monovalent, divalent, or polyvalent cationic metals comprise one or more transition metals.

3 . The acid-resistant composite material of claim 1 , wherein the one or more monovalent, divalent, or polyvalent cationic metals comprise one or more group 2 or group 8-11 metals.

4 . The acid-resistant composite material of claim 1 , wherein the one or more monovalent, divalent, or polyvalent cationic metals comprise one or more metals selected from the group consisting of titanium, lithium, chromium, calcium, copper, cobalt, iron, and magnesium.

5 . The acid-resistant composite material of claim 1 , comprising a plurality of the metals.

6 . The acid-resistant composite material of claim 1 , wherein a ratio of silicon to aluminum in the acid-resistant composite material is about 0.75 to about 3.0.

7 . The acid-resistant composite material of claim 1 , wherein a ratio of sodium to aluminum in the acid-resistant composite material is about 0.8, or about 0.9 to about 1.4.

8 . A method of forming an acid-resistant composite material, the method comprising the steps of:
dissolving one or more alkaline metal salts in a solution; and adding the solution to one or more aluminosilicate precursors and optionally other minerals to form a mixture.

9 . The method of forming an acid-resistant composite material of claim 8 , wherein the one or more aluminosilicate precursors comprise a synthetic aluminosilicate precursor.

10 . The method of forming an acid-resistant composite material of claim 8 , wherein the one or more aluminosilicate precursors comprise one or more of Metakaolin, fly ash, slag, pumice, basalt, glass, or other natural pozzolan.

11 . The method of forming an acid-resistant composite material of claim 8 , further comprising a step of filtering the mixture.

12 . The method of forming an acid-resistant composite material of claim 8 , further comprising a step of drying the mixture to form a dried material.

13 . The method of forming an acid-resistant composite material of claim 12 , further comprising a step of grinding the dried material.

14 . The method of forming an acid-resistant composite material of claim 8 , further comprising adding an alkali additive to one or more of the mixture and the dried material.

15 . The method of forming an acid-resistant composite material of claim 14 , wherein the alkali additive comprises one of more of sodium silicate, sodium hydroxide, potassium hydroxide, or sodium carbonate.

16 . The method of forming an acid-resistant composite material of claim 14 , wherein the step of adding an alkali additive to one or more of the mixture and the dried material comprises adding a solid and/or a liquid.

17 . The method of forming an acid-resistant composite material of claim 14 , wherein the step of adding an alkali additive to one or more of the mixture and the dried material comprises adding a solid.

18 . The method of forming an acid-resistant composite material of claim 14 , wherein the step of adding an alkali additive to one or more of the mixture and the dried material comprises adding a liquid.

Assignees

• Univ Colorado Regents
• The Regents Of The Univ Of Colorado A Body Cor

Inventors

• Srubar Iii Wilfred V
• Gevaudan Juan Pablo

Classifications

• C04B2111/00215

  Mortar or concrete mixtures defined by their oxide composition · CPC title

• C04B28/006

  containing mineral polymers, e.g. geopolymers of the Davidovits type · CPC title

• C04B2111/26

  Corrosion of reinforcement resistance · CPC title

• C04B12/005 Primary

  Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates · CPC title

• Y02P40/10

  Production of cement, e.g. improving or optimising the production methods; Cement grinding · CPC title