Comparing Production and Placement of Warm-Mix Asphalt to Traditional Hot-Mix Asphalt for Constructing Airfield Pavements.

摘要

Warm-mix asphalt (WMA) is an emerging technology that allows for production and placement of asphalt concrete at lower temperatures than conventional hot-mix asphalt (HMA). Full-scale pavement test sections were constructed using conventional equipment to observe differences in the techniques used to produce, place, and compact asphalt concrete using warm mixtures. These observations are needed to ensure construction specifications are adjusted appropriately for WMA construction. Results from this phase of the study include data identifying differences in WMA and HMA construction. The WMA was successfully constructed using the same equipment to produce in-place density equivalent to the HMA at reduced temperatures. Future work will include trafficking the pavement sections using accelerated pavement testing equipment to determine the WMA rutting performance.