NCAT Report 09-04 OHIO FIELD TRIAL OF WARM MIX ASPHALT TECHNOLOGIES : CONSTRUCTION SUMMARY By

ii DISCLAIMER The contents of this report reflect the views of the authors who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Federal Highway Administration, Advanced Materials Services, LLC, the National Center for Asphalt Technology, or Auburn University. This report does not constitute a standard, specification or regulation. iv ABSTRACT Warm Mix Asphalt (WMA) mixtures produced using three different WMA technologies were evaluated in a field project located in Kimbolton, Ohio. The technologies evaluated were Aspha-min ® zeolite, Sasobit ® , and Evotherm™. A control section was also produced so comparisons could be made between WMA and conventional Hot Mix Asphalt (HMA). Mixture volumetric properties, rutting susceptibility, moisture resistance, dynamic modulus, and emissions testing were conducted to evaluate field performance. Based on the laboratory testing, the different WMA technologies all performed equal to or better than the control mixtures. A decrease in emissions was also determined for the Sasobit ® and Aspha-min ® , with Evotherm™ showing an increase in emissions, compared to the HMA control. All three WMA technologies, however, greatly reduced the worker exposure at the paver.