Materials – Quality

We have modern, fully equipped labs at Sunol, Marysville hot plants that we can staff and operate simultaneously on a 24/7 basis.   This makes us uniquely capable of servicing even the most demanding airport and freeway paving projects in the San Francisco Bay Area.”

Tracey Zubek, Quality Control Manager

Our materials undergo numerous tests. Our laboratories are Caltrans and AASHTO Accredited to ensure that our products meet the customers' needs as well as exceed Federal, State, and Local specification requirements.

Each of our laboratories are nationally accredited through AASHTO which includes an extensive review of our laboratory and technicians. Our Laboratory Technicians have many Certifications and can perform the following test methods:

  • Caltrans
  • American Association of State Highway and Transportation Officials (AASHTO)
  • American Society for Testing Materials (ASTM)

 

Additional Certifications

  • National Institute for Certification in Engineering Technologies (NICET)
  • Nuclear Gauge Safety

 
The laboratories are capable of full phase Aggregate and HMA testing. We have equipment to run all Marshall, HVEEM and SUPERPAVE testing including the Hamburg Wheel Track (HWT).

We also work with other laboratories to ensure the quality of our testing.

The combination of quality reserves, modern manufacturing techniques, accredited testing facilities and certified technicians demonstrates DeSilva Gates Aggregates’ commitment to the production of quality aggregate and asphalt materials for the Northern California construction community. Our goal is to be the preferred source of aggregates and asphalt materials.

Lab