US 11,958,774 B2
High surface area inducers for cementitious aggregates production
Antonio J. Aldykiewicz, Jr., Lexington, MA (US); Klaus-Alexander Rieder, Beverly, MA (US); Michael D. Morgan, York, ME (US); and Djassi-biko Rodrigues Pires, Nashua, NH (US)
Assigned to GCP APPLIED TECHNOLOGIES INC., Alpharetta, GA (US)
Appl. No. 17/050,099
Filed by GCP Applied Technologies Inc., Cambridge, MA (US)
PCT Filed May 11, 2018, PCT No. PCT/US2018/032361
§ 371(c)(1), (2) Date Oct. 23, 2020,
PCT Pub. No. WO2019/209353, PCT Pub. Date Oct. 31, 2019.
Claims priority of provisional application 62/663,344, filed on Apr. 27, 2018.
Prior Publication US 2021/0371337 A1, Dec. 2, 2021
Int. Cl. C04B 18/02 (2006.01); C04B 40/00 (2006.01)
CPC C04B 18/021 (2013.01) [C04B 40/0032 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for producing aggregate particles from cementitious compositions, comprising: combining in a vessel a cementitious composition and at least one aggregate-forming inducer for adhering to cement paste, wherein the at least one aggregate-forming inducer comprises a fiber having an elongated body with a length to equivalent diameter ratio of at least 10 and, when added to the cementitious composition, introduces a surface area of between 500 and 10,000 square meters per cubic meter for cement paste to bond/adhere to,
wherein the at least one aggregate-forming inducer is chosen from shredded and/or cut paper, cardboard, corrugated cardboard, cartons, corrugated cartons, crepe paper, newsprint, kraft paper, wall paper, wax paper, silk paper, shredded currencies removed from circulation, wood fibers, glass fibers, shredded textiles, cotton fibers, hemp, mineral fiber chosen from wollastonite, mica, rock wool, slag wool, graphite, natural fibers chosen from sisal fibers, cotton, flax, jute, coconut husks, protein-based fibers, banana, pineapple, wool, mohair, silk, and mixtures of any of the foregoing.