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866 Asphalt Mixture Design
Asphalt material sampling and testing methods as prescribed in 866 are mobilized into the contract
in standard spec 301.2.3 and standard spec 460.
866.1 Asphaltic Mixture Design
Provide an Asphaltic Mixture Design Job Mix Formula (JMF) report representing the materials intended
for use along with their proportions for producing the final product. These procedures infer laboratory
mixed and compacted specimens unless designated otherwise.
JMF Mix Design Reports are the responsibility of the Highway Technician Certification Program (HTCP)
certified personnel and must comply with the materials and mix design requirements of standard spec
460 .
If a contractor uses a consulting laboratory to supply a mix design, the contractor must authorize in writing
that the consultant acts as the contractors agent during the mix design approval process.
During the mix design submittal process, WisDOT will only accept 2 passing designs per each nominal
maximum aggregate size or one mix design per combined bid item (whichever is greater), per project.
During construction, any approved mix design matching the pay item may be used.
Current WisDOT project ID is required for mix design submittal.
The default WisDOT project number, 0250-11-11, is used on the 249 submittal form when a current
WisDOT project number is not available at time of design. An example would be a non-DOT project
requiring a DOT approved mix design.
Any mix design approaching expiration, can be renewed with a one point verification and will retain its
original 250 number when renewed on the approved list.
Any mix design that had been issued a 250 number not using the 249 form may contact BTS for
instruction on how to obtain a 250 numbe
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