Paving fabrics for reducing reflective cracking

608503Construction reportPDFResearch PaperFHWA-AZ-8801HPR\uc2\ub7PL-1(35) ltem 114Overlays (Pavements)Asphalt concreteGeotextilesReflection crackingPerformance testsEvaluation and assessmentField testsArizonaArizona. Dept. of TransportationRahman, MushtaqurScofield, LarryWolfe, TimothyArizona. Dept. of TransportationArizona Transportation Research CenterUnited States. Federal Highway AdministrationNTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and PerformanceNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and MaintenanceNTL-HIGHWAY/ROAD TRANSPORTATION-MaterialsUS Transportation CollectionThis report documents the installation of three commercially available paving fabrics for the reduction of reflective cracking in asphalt overlays. The fabrics installed were Paveprep, Glassgrid, and Tapecoat. The test section is in Willcox, Arizona, on State Route 186. The Willcox rehabilitation project, RS-274-(8)P, involved milling and replacing 2 in. of asphalt concrete, and placing pavement reinforcing fabric. A total of 600 linear feet of each product was placed over transverse cracks, and an additional 100 to 300 ft of each product were placed over random cracks. Markers were placed on the curbs to help monitor the performance of the fabrics during the next 3 years. Problems which occurred during installation of the fabrics are described. Recommendations include the need for proper binder coat selection when paving fabrics are used in pavement rehabilitation, the need for additional field testing of Paveprep on milled surfaces, and caution regarding the use of Glassgrid on rough surfaces. /Abstract from report summary page