Method for preparing a concrete article having reinforcing fibers frayed at their ends

US6780367B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Aleksander J. Pyzik · Midland, US
• Kenneth Stewart · Lake Jackson, US
• Hari Reddy · Midland, US
• Kwanho Yang · Midland, US
• Sharon M. Allen · Midland, US
• Ted A. Morgan · Midland, US

Key dates

• Filing date: Jun 26, 2001
• Grant date: Aug 24, 2004
• Expiry date: Nov 5, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2929
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for preparing a concrete article comprised of concrete having therein a reinforcing fiber, where at least about 50 percent of the reinforcing fibers are frayed only at an end or ends of the reinforcing fibers, may be made by mixing concrete, water and a reinforcing fiber for a sufficient time to fray the ends of at least 50 percent of the fibers and curing the mixture to form the concrete article. The fiber may be a reinforcing fiber comprised of at least two filaments bonded together and the filaments being comprised of a polymeric core and a polymeric sheath comprised of a fusing-fraying polymer, such that the reinforcing fiber, when mixed with inorganic particulates, frays predominately only at an end or ends of the fiber