The Dryer-Drum Mixing Process for Producing Asphalt Concrete Mixtures in the State of Washington,

摘要

The report describes the dryer-drum process for production of asphalt pavement mixtures. Damp or wet aggregates and asphalt are introduced into a dryer drum. Drying the aggregate and coating it with asphalt are accomplished as the materials pass thru the dryer. No further mixing is required. Results of tests, i.e.,penetration loss,compaction,extraction,etc.,are given. Practically all particulate emissions are eliminated. Substantial cost reductions are envisioned. (Author)