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Title: ULTRA-THIN, FIBER-REINFORCED CONCRETE OVERLAYS FOR URBAN INTERSECTIONS
Accession Number: 00727330
Record Type: Component
Record URL: Availability: Find a library where document is available Abstract: An industry partnership involving state and local highway officials, ready mix concrete producers, and fiber, admixture, and cement suppliers paved the way for extensive testing of a new concrete technology in Tennessee. Known as ultra-thin whitetopping (UTW), this experimental repair procedure involves placing a layer 50 to 75 mm (2 to 3 in.) thick of high-strength concrete over milled asphalt. Crucial to a long life for the thin concrete is a high synthetic fiber content, normally 1.4 kg/cu m (3 lb/cu yd) with joints spaced at a minimum of 0.92 to 1.22 m (3 to 4 ft) on center. From 1992 to 1995, seven cities in Tennessee participated in UTW demonstrations. The field tests were so successful that synthetic fiber-reinforced UTW is now being bid on many state and local projects. Presently, the primary use of UTW is to rehabilitate high average daily traffic intersections. Other potential uses include overlays of residential streets, parking lots, and airport aprons.
Supplemental Notes: This paper appears in Transportation Research Record No. 1532, Advancements in Concrete Materials Technology.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Speakman, JScott III, H NPagination: p. 15-20
Publication Date: 1996
Serial: ISBN: 0309059046
Features: Photos
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; Tables
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TRT Terms: Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Highways; Maintenance and Preservation; Materials; I32: Concrete; I61: Equipment and Maintenance Methods
Files: TRIS, TRB
Created Date: Oct 21 1996 12:00AM
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