CMRA introduces best practices guide for Shingle Recycling.(ASSOCIATION NEWS)

* The Construction Materials Recycling Association (CMRA) has introduced a best practices guide for the recycling of tear-off asphalt shingles. The association planned to present the guide at the Shingle Recycling Forum.

The forum is the third such event organized by the U.S. Environmental Protection Agency, the Federal Highway Administration and the CMRA. Reflecting the growing interest in use of recycled asphalt shingles, the event's organizers sought to present the latest research and foster discussion of the issues facing shingle recycling.

The forum was held Nov. 1-2 in Chicago. More information is available at www. shinglerecycling.org.

The CMRA has also initiated a study examining the relationship between pH levels and the use of recycled concrete in road applications. "Some DOTs have questions about that, and the un-hydrated cement in the recycled aggregates may be the culprit," says CMRA Executive Director William Turley. "We are checking if this is valid and then will develop guidelines to overcome the problem. This is not a major problem--we just want to see what the concerns are."

The project is expected to be finished next year.

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