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Rubberized Hot Mix Asphalt Information

RAC

The District 1 Materials Laboratory strongly encourages the use of Rubberized Hot Mix Asphalt (RHMA) pavement.  RHMA pavement has proven to provide a longer life than conventional asphalt concrete.  Additionally, Assembly Bill 338 (AB 338) requires the Department of Transportation to meet minimum RHMA usage amounts, which are targeted to increase year-to-year with a ceiling of 35% of projects constructed using RHMA by January 1, 2013. Please review Design Directive NR D-10, “Effective Utilization of Rubberized Asphalt Concrete” for further information regarding background and constructability. Information regarding the use of RHMA in highway construction, can be found in the following web sites:

Rubberized Pavements Association

LA County Rubberized Asphalt Concrete Technology Center

CT Pavement Rehab using Rubberized Asphalt Concrete

Sacramento County Emission Cover Letter (PDF 186K)

John Loudon McAdam, King of the Roads (PDF 894K) Reprinted from "The Highlander" Magazine. The Magazine of Scottish Heritage January/ February 2003