Street Patching Operations: Field Test Evaluation Program, UPM Cold Patch

摘要

This report describes a field test in which standard cold mix and UPM High Performance Asphalt Cold Patch were compared in terms of their effectiveness as street patching materials. The patching material performance was expressed as a function of time; substrate material; traffic load; ambient temperature at installation; and volume of material used. Also compared were precipitation runoff, moisture presence, and poor pothole conditions. Based on an analysis of test results, the UPM pothole patching material appears to improve patching qualities when compared to standard cold mix patches. The results indicate that over a one-year period there were approximately two-thirds fewer UPM patch failures than the standard cold mix. It was shown that the UPM material performed significantly better than the standard cold mix when (1) subjected to higher volume traffic loads; (2) placed in medium-to-large sized potholes; and (3) potholes were in poor condition. A sample comparative cost analysis is presented.