Plastic fibers for improved concrete

US7025825B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

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

Key dates

• Filing date: Jul 13, 2004
• Grant date: Apr 11, 2006
• Expiry date: Aug 31, 2024

Classification

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

Abstract

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.