Materials Lab
- Contacts
- TL-543
- NEW! Section 39, HMA "Hot Mix Asphalt" and Associated SSPs
- Rubberized Hot Mix Asphalt
- HMA and Concrete Plant Certification CTM 109
- Independent Assurance Program (IAP)
- Structural Section Request Information
- Check List for Construction Sampling
- Pavement Deflection Study
- Pavement coring
- R-Value Testing
- Culvert Studies
- Certified Materials Testers List
- Materials Delivery Timeline (PDF 208K)
Laboratory Policies and Procedures
- 2006 Standard Specifications
- 2006 Standard Plans
- 2006 Standard Specifications Digest of Major Changes
- California Test Methods
- Lab Procedures
- Highway Design Manual
- Construction Manual
- Acceptance Testing Turnaround Times
- Aggregate Process Testing
- HMA Acceptance Testing
- Lab Workload Priority
- Correcting Errors in TL-101s and/or Submitted Samples
- Disposal of Test Samples
- Nuclear Density and Asphalt Gauge Procedures
- Laboratory Safety Manual
District 01 Field Labs
Rubberized Hot Mix Asphalt Information
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:
Asphalt Rubber Usage Guide (2003)
CalTrans-CIWMB Partnered Project Rubberized AC (2004-2006)
Rubberized Pavements Association
LA County Rubberized Asphalt Concrete Technology Center
CT Pavement Rehab using Rubberized Asphalt Concrete
Sacramento County Emission Cover Letter (PDF 186K)
METS Office of Flexible Pavement Materials
John Loudon McAdam, King of the Roads (PDF 894K) Reprinted from "The Highlander" Magazine. The Magazine of Scottish Heritage January/ February 2003
