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Experimental Mixes to Minimize Rutting

by Charles S. Hughes, Virginia Transportation Research, Council, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

This report describes the materials and construction details involved in the design and placement of four experimental mixes on I-95 (Richmond-Petersburg Turnpike) in 1985 and follows the performance for 48 months. The mixes were designed to resist rutting and to provide several years of service before failing from fatigue or the intrusion of water. The results indicate that the gradation chosen is more important in minimizing rutting than are the asphalt cement-additive combinations used. However, some strength tests point to the value of using an AC-30 asphalt cement as opposed to an AC-20 asphalt cement. Controlling traffic for a sufficient time to allow the pavement to cool to a temperature at which traffic will not prolong the compaction process is critical.

Subject Headings: Pavement rutting | Asphalt pavements | Material properties | Pavement design | Construction materials | Concrete pavements | Materials processing

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