Determann Asphalt shines in Recycled Asphalt Shingle (RAS) Demonstration

Determann Asphalt showed their operational skills during a recycled asphalt shingle (RAS) demonstration on Friday, Oct 2 on Highway 61 north of DeWitt. The demonstration was part of an IDOT and APAI demonstration and testing project to show off the use of tear-off recycled shingles for use in hot-mix asphalt. Determann Asphalt produced a ¾” shoulder mix utilizing 5% RAS and 5% RAP in a 50/50 blend. The use of RAS and RAP decreased the amount of required virgin asphalt cement from 6.3 % to 4.8%. Attendees witnessed the incorporation at the asphalt plant and placement on the shoulders of Highway 61, where over 23,000 tons of RAS/RAP shoulder surface mix is scheduled to be placed. Results from this test project will be used in the Developmental Specifications for the new IDOT RAM (recycled asphalt materials) Specification expected in December of 2009. Thank you to all the attendees, the IDOT, Joe Manatt, Randy Starr and the Determann Asphalt employees for their hard work in putting together this program.

Please plan to attend our final open house of the 2009 season on Wednesday, October 21 at the Merle Hay Rd Holiday Inn beginning at 10 AM. The Warm-Mix Asphalt (WMA) demonstration by Des Moines Asphalt of OMG will feature the foaming process at their Beaver Ave plant followed by a trip to their paving project in Warren Co. Go to apai@apai.net or call Minnie at 515-233-0015 for further information and to register for the event.