Back to results
US 2022/0298073 A1Published application
Cementitious biochar compositions and methods of making the same
AssigneeAlliance for Sustainable Energy, LLC
InventorsMichael Brennan Pecha, Lori Elizabeth Tunstall, Julia Hylton
Life of this patent
Estimating the term…
Abstract
Described herein are cementitious compositions comprising biochar and methods of making such compositions. The compositions find use in a variety of applications, including use in a variety of building materials and building applications.
Claims20
A cementitious solid, comprising:
- a hydraulic cement;
- at least 2% of a biochar by weight based on a total amount of the hydraulic cement and the biochar;
- and
- an aggregate material;
- wherein:
- the biochar comprises a mean particle size (Dv,50) of between 0.1 μm and 100 μm and an average surface area of at least 20 m2/g, and
- the biochar and the aggregate material are dispersed within the hydraulic cement.
4 more elements
A cementitious mixture, comprising:
- a hydraulic cement;
- at least 2% of a biochar by weight based on a total amount of the hydraulic cement and the biochar;
- an aggregate material;
- and
- water
- wherein:
- the biochar comprises a mean particle size (Dv,50) of between 0.1 μm and 100 μm and an average surface area of at least 20 m2/g, and
- the cementitious mixture has a water to cement ratio (w/c) is between 0.3 to 0.65 and a slump between 100 mm and 150 mm.
5 more elements
A method of preparing a cementitious composition, comprising:
- combining a hydraulic cement, at least 2% of a biochar by weight based on a total amount of the hydraulic cement and the biochar, and an aggregate material;
- and
- adding water to obtain a water to cement ratio (w/c) between 0.3 to 0.65;
- wherein the biochar has a mean particle size (Dv,50) between 0.1 μm and 100 μm and an average surface area of at least 20 m2/g.
1 more element
Dependencies are inferred from the claim text.