The basic process used to modify asphalt cement with polymers (primarily SBS polymer) is to introduce both liquid asphalt cement and polymer pellets into a heated mixing (or wetting) tank, where they are mixed and the polymer is softened. The mixture is then pumped out through a mill (or grinder) into a storage tank. This mixture is usually made at a higher concentration (about 8% to 12% by weight) than the finished product to minimize the energy required.  At this stage, a chemical additive (cross-linker) is added to chemically finish the chemical bonding. The mixture is then transferred to a finished product tank, where it is diluted to the final concentration (about 2% to 2.5%).

Our blending technology utilizes the Modified Asphalt Contactor™ reactor for the mixing tank. The higher effective blending and heating capabilities will allow milling to be accomplished in a single pass, eliminating the need for multiple passes. This will result in significant energy savings due to the large motor of the mill (typically 200-300 HP), which would otherwise be operated for three to six times longer. This also would result in reduced processing time. 
 

ECOPATH has extensive experience in binder design where emphasis is placed on achieving specified binder in the most cost effective manner. ECOPATH provides unique solutions for every asphalt concern.  Moreover, ECOPATH is dedicated to developing solutions with economic efficiency as a priority. Please This e-mail address is being protected from spambots. You need JavaScript enabled to view it   for further information on binder design services.