Quick and inexpensive chip seals as a pavement maintenance surface are widely used. Researchers for Missouri DOT tested the use of crumb rubber from recycled tires as portions of chip seal aggregate. Results showed “remarkable performance” in aggregate retention, and after one year of use, the sample chip seal sections outperformed trap rock chip seal in all areas examined.
Read the research report: Field Implementation of Rubberized Chip Seal, December 2018