Mats for use in paved surfaces

US8043025B2 · kind B2 · utility

Assignee

• Owens Corning Intellectual Capital, LLC · US

Inventors

• Jesus M. Hernandez-Torres · Pataskala, US
• David R. Jones · Eastleigh, GB
• Liang Chen · Hangzhou City, CN
• Jeffery W. Smith · Orland Park, US
• Timothy A. Miller · Worden, US
• Helen Huang · Zhejiang, CN
• Michael D. Samueloff · Troy, US
• Mohammed Tazi · Marietta, US
• Timothy R. Gilbert · Granville, US

Key dates

• Filing date: Apr 24, 2007
• Grant date: Oct 25, 2011
• Expiry date: Jan 11, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/607
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A paving mat for use in a paved surface includes a fibrous mat in the form of a paving mat. The fibrous mat includes a fibrous matrix containing a mixture of polymer fibers, first mineral fibers having a first median length, and second mineral fibers having a second median length that is different from the first median length. In another embodiment, the paving mat includes a fibrous mat including a fibrous matrix which is bonded together by a binder. In one embodiment, the binder is a mixture of different binders. The fibrous matrix includes a mixture of mineral fibers in an amount within a range of from 61 wt % to 85 wt % and polymer fibers in an amount within a range of from 15 wt % to 39 wt %. The polymer fibers have a melting point greater than 320° F. (160° C.). The mat has a stiffness in the machine direction within a range of from 65 g-cm to 110 g-cm. The mat has a load-elongation behavior such that when the mat is subject to tensile stress, the mat achieves at least 90% of its ultimate load at an elongation not greater than 5% of the specimen length in the direction of applied stress. Another embodiment of the paving mat is made with a carboxy-modified acrylic binder.