In the fall of 2008, several test sections of Sulphur Enhanced Asphalt Concrete (Shell Thiopave) were constructed on the Highway 99 “Sea To Sky Highway” improvement project constructed by Peter Kiewit Sons. This paper summarizes the results of the initial research, design, construction practices, production test results and post‐construction testing results obtained during the construction of these test sections. Specifically, this document is intended to provide a brief overview of the Sulphur Enhanced Asphalt Concrete Technology used on this project, as a comparison between the new warm mix asphalt technology and the older liquid sulphur asphalt mixes, a summary of recent preliminary findings with regards to sulphur enhanced mix environmental impacts, a summary of the procedures and information developed during the initial design phase for these test sections, findings and improvements implemented during the construction phase and a summary of the production quality control tests.
