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5007 NE 39th Avenue, Gainesville, FL 32609 | (352) 955-6600 | materials@dot.state.fl.us

News and Information

Specification Change for Coarse Aggregate - No. 89 Stone Specification for No. 8 Sieve

Materials Bulletin 04-12: A specification revision will be processed in the near future changing Table 1, Subsection 901-1.4. This memorandum serves as a blanket approval to process the change. If requested by a contractor, the change will be at no cost to the Department and should be attached to the Field Supplemental Agreement/Work Order or Supplemental Agreement. For additional information on these changes, please select the above link to view the complete bulletin.

St. Johns River Power Park Fly Ash Plant (FA17)

Materials Bulletin 03-12: In order to prevent concrete placement delays due to the shortage of Class F fly ash from the St. Johns River Power Park, concrete producers may request that the Department implement a modified mix design approval process. Materials Bulletin 03-12 will allow placement of concrete prior to receiving formal Department mix design approval, and is only applicable for replacing St. Johns River Power Plant Class F fly ash incorporated in currently approved concrete mix designs. Please select the above link to view additional information regarding these changes.

SMO Chemistry Laboratory Earns NELAC Accreditation

Chemical Materials Unit: On October 1, 2011, the Chemical Materials Systems Unit at the State Materials Office received NELAC Accreditation through the Florida Department of Health. The accreditation, titled "General Chemistry, Non-Potable Water - Metals," pertains to the testing of non-potable water used for concrete. The National Environmental Laboratory Accreditation Conference, more commonly known as NELAC, is sponsored by the United States Environmental Protection Agency as a voluntary association for state and federal officials. NELAC was formed to establish and promote mutually acceptable performance standards for the operation of environmental laboratories.

About the Materials Program

The Florida Department of Transportation's Materials Program ensures that the materials used in transportation construction projects meet the required department specifications. In addition, the program investigates new and emerging technologies to improve the long-term performance of transportation facilities. Learn More

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