Carbon storage using ash, seawater, and alkali activator as a non-cement-based building materials

Patent metadata

Field	Value
Publication number	US-11174201-B1
Application number	US-201916660921-A
Country	US
Kind code	B1
Filing date	Oct 23, 2019
Priority date	Oct 24, 2018
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

Carbon dioxide and ash are two major waste by-products from coal fire production. Presented herein is are methods, material, and devices for storing carbon using high ash-content building material. The idea is to generate materials with commercial values to offset the cost for carbon capture. Ash with alkali activator (geopolymer) concrete has been studied extensively for its superior performance (higher strength) than ordinary Portland cement (OPC) concrete. However, most geopolymer concrete needs energy input in the forms of pressure and heat, which in turn are usually based on electricity produced through power plants.

First claim

I claim:

1. A process for creating geopolymeric concrete, the process comprising:
adding salt water to a mixture of geopolymer concrete;
adding coal ash; and
curing the mixture with CO2.

Assignees

• Univ North Carolina Charlotte

Inventors

• Chen Shen-En

Classifications

• C04B2111/00019

  Carbon dioxide sequestration · CPC title

• C04B28/006 Primary

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

• Y02P40/10

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

• Y02W30/91

  Use of waste materials as fillers for mortars or concrete · CPC title

• C04B2111/00637

  as glue or binder for uniting building or structural materials · CPC title