Rubber Modified Asphalt Binders

Blacklidge Emulsions, Inc. is the major producer of Rubber Modified Asphalt Binders in Florida, which is specificing Rubber Modified Asphalt Binders for use on all Department of Transportation friction coarses (dense-graded and open-graded).

Blacklidge Emulsions, Inc. has participated in many of the SHRP demonstrations and research projects throughout the United States. Particularly in the Southeastern United States, the SHRP 76-22 performance graded asphalt binder has been selected by various Department of Transportations. Blacklidge Emulsions, Inc. has generally been able to meet this binder specification by the addition of 9-12% 40 mesh rubber using Blacklidge Emulsions' blending technique with the addition of special additives. Generally, Blacklidge Emulsions has found that using tire rubber instead of latex or SBS polymers is less expensive. The addition of tire rubber will improve the low and high end and temperature ranges of the SHRP specifications.

The following pages contain further information about Rubber Modified Asphalt Binders:

• History of Crumb Rubber
• Crumb Rubber Modifier Tech
• Performance
• RMAB & the National Highway Bill