One year after the Warner Babcock Institute for Green Chemistry LLC (WBI) and Collaborative Aggregates LLC (CollAgg) made the environmentally sustainable asphalt rejuvenation and warm mix chemistry of Delta S available to the industry, the companies announce multiple successes in the field and celebrate the anniversary with participation at the World of Asphalt/AGG1 in Nashville.
To prove the product’s effectiveness as an asphalt rejuvenator, CollAgg is sponsoring a 200-foot research section on the National Center for Asphalt Technology (NCAT) Test Track at Auburn University in Alabama. The pavement has already experienced 2 million equivalent single axle loads (ESALs) toward the 10 million ESAL goal.
Closer to home, CollAgg is working with the Massachusetts Department of Transportation (MassDOT), to take Delta S through the Northeast Asphalt User Producer Group (NEAUPG) product approval process for regional
use as an asphalt warm mix chemistry. Additionally, a trial in MassDOT District 3 is a go thanks to the fine partnership of CollAgg, WBI and the Highway Sustainability Research Center at University of Massachusetts Dartmouth, where Dr. Wala Mogawer, P.E., has performed testing of Delta S as a rejuvenator with high reclaimed asphalt pavement (RAP) percentage mixes. The trial this construction season will include thin lift inlays with up to 40% RAP content treated with Delta S.
Yet another success story is the use of Delta S as a rejuvenator on a portion of the access road for the Wellesley Recycling and Disposal Facility, Wellesley, Mass., which sees over 1,000 vehicles per day during the week and 4,000 vehicles on Saturdays. CollAgg’s Vice President of Operations Jay Bianchini shared, “We placed a 2-inch inlay of asphalt mix with 40 percent RAP treated with Delta S in November 2015. When we went to review it in early April after a winter season, it looks great.”
