CALIFORNIA DEPARTMENT OF TRANSPORTATION<br>AUTHORIZED CRUMB RUBBER MODIFIER LIST

CALIFORNIA DEPARTMENT OF TRANSPORTATION
AUTHORIZED CRUMB RUBBER MODIFIER LIST

Last edit date: 4/16/2020

Crumb Rubber Modifier (CRM) is used in Asphalt Rubber Binder Chip Seal and Rubberized Hot Mix Asphalt (RHMA). There are two material specifications for CRM, scrap tire crumb rubber and high natural scrap tire crumb rubber.

The specification requirements for scrap tire crumb rubber and high natural scrap tire crumb rubber are listed in Section 37-2.04, Section 39-3 and Section 92-1.01B of the 2015 Standard Specifications.

Evaluation Criteria: Authorization Procedures and Acceptance Criteria for Crumb Rubber Modifier.

Supplier Name and Location Contact Information Product Descriptions Expiration
Date
American Tire Recycling, LLC. - Ballico, CA (209) 667-8473 Scrap tire crumb rubber, High natural scrap tire crumb rubber 4/2024
BAS Recycling, Incorporated - San Bernardino, CA (951) 214-6590 Scrap tire crumb rubber, High natural scrap tire crumb rubber 5/2023
CRM (Crumb Rubber Manufacturers) - Corporate Headquarters - Newport Beach, CA (949) 263-9100 Scrap tire crumb rubber, High natural scrap tire crumb rubber 5/2023

NOTES:

Products on this AML are products that have been evaluated and found acceptable for use, provided the products are used in accordance with the manufacturer's instructions. California Department of Transportation ("Caltrans") may perform additional job control testing during construction or installation.

Caltrans contact: Chemical Testing Branch, chemistry.branch@dot.ca.gov