KCMMB Asphaltic Concrete
Submittal Procedure 2026

 

GENERAL INFORMATION

All asphalt mix designs shall be submitted to the Kansas City Metro Materials Board (KCMMB) through the submittal form on the website and approved by KCMMB prior to use. Additionally, all materials proposed for use in asphalt mix designs shall be approved by KCMMB. Such materials include coarse aggregates, fine aggregates, asphalt binders, and antistripping agents. All mix design and material testing shall be performed by a qualified laboratory.

All KCMMB approved mix designs for 2025 will expire on April 1, 2026, even if mixes are used on multi-year construction projects. Mix designs must be resubmitted to KCMMB with updated aggregate qualities to remain an approved KCMMB supplier for 2026. Updated aggregate testing shall be submitted through the website, at minimum, once per KCMMB year for reapproval. Aggregate testing data cannot be used for approval for more than one year. For mixes with no change to quantities or material sources, mix design testing is only required to be updated every three years, unless a major specification change dictates a mix redesign.

KCMMB will preapprove asphalt binders, virgin aggregates, and recycled aggregates. The material submittal forms are expected to be published on the website the first week of January 2026. The asphalt mix design form will be posted once there are enough materials approved to complete a mix design. A downloadable spreadsheet has been developed to outline the requirements of the mix design submittal and can be found under “Submittal Info” on the asphalt home page.

KCMMB will review all mix designs and material submittals. Payment for review fees will be required before submittals will be reviewed. Material submissions will be assessed a $50 review fee. A $75 fee per mix design will be assessed if the mix designs are received by February 14th. Mix designs received after February 14th will be assessed a $150 fee. Any mix design requiring approval in less than 10 working days will be assessed a $250 review fee. Supporting documentation for mix designs must be submitted in *pdf format. Mix designs with incomplete tests will be returned without further review of the mix design.

GBA will not review any submittals prior to receiving payment. GBA does not accept credit cards. Please make checks payable to "GBA" and send them to the following address:

Attn: Josh Miller
GBA
9801 Renner Blvd #300
Lenexa, KS  66219

If your company requires an invoice prior to payment, send a request via email for an invoice prior to submittals. If you will be submitting close to the April 1st deadline, please send checks prior to submitting to avoid delays in review.

All mix designs shall be submitted through the website using the Mix Design Submittal Form and must follow the current KCMMB Asphalt Material Specification. All KCMMB asphaltic concrete mix designs shall have a unique mix designation. Any mix design change to a quantity or material source shall require the mix to be resubmitted to KCMMB with a new mix designation. Mix designations shall follow the following format:

Example:      GB25201KCMMBA2

14 Characters

GB – first two characters indicate supplier name (George Butler)

25 – next two characters indicate the first year of approval (2025)

2 – the next character indicates the mix series (100 series for A1, 200 series for A2, 300 series for A3)

01 – next two numbers indicate a unique mix design within the series

KCMMBA2 – quick reference for the mix type (A1, A2, or A3)

MATERIAL SUBMITTAL REQUIREMENTS

 Materials shall be submitted through the material submission forms on the website. Supporting documentation for material submittals shall include the following information:

  • Plant Name
  • Asphalt Binder Sources
    • Certificate of Analysis in compliance with AASHTO M 320
  • Virgin Aggregate Sources
    • Supporting Documentation shall be provided one of the two ways below.
      • Aggregate Source is listed on KDOT’s Hot Mix Aggregate Specific Gravity Values list.
      • Independent Laboratory Testing Report
        • Gradation
        • LA Abrasion
        • Sulfate Soundness (MgSO4)
        • Coarse Aggregate Fraction, (+) #4 material
          • Bulk Dry Apparent Specific Gravity (SSD)
          • Absorption
        • Fine Aggregate Fraction, (-) #4 material
          • Bulk Dry Apparent Specific Gravity (SSD)
          • Absorption
  • Recycled Aggregate Sources
    • Effective Specific Gravity
    • Gradation
    • Asphalt Content
      • Asphalt content shall be the averaged value between ignition and extraction.
    • Asphalt Content Correction Constant
    • Sand Ratio
    • If necessary
      • Sand Fraction
      • Specific Gravity Test
      • Absorption Test
      • Fine Aggregate Angularity

MIX DESIGN SUBMITTAL REQUIREMENTS

Mix designs shall be submitted through the mix design submission form on the website. Supporting documentation for asphalt mix design submittals shall include names and percentages of all material sources, as well as the following information:

  • Plant Name(s)
  • Mix Type
  • Mix Designation
  • Anti-Stripping Agent
    • Letter from the manufacturer or the manufacturer’s certification containing the recommended dosage in units of percent by weight of total virgin binder.
  • Virgin Aggregate Sources
    • Bulk Dry Composite Specific Gravity
    • Gradation
  • Recycled Aggregate Sources
    • Effective Specific Gravity
    • Gradation
    • Asphalt Content
    • Asphalt Content Correction Constant
  • Composite Mix
    • Resultant Aggregate Composite Specific Gravity
    • Combined Aggregate Blend Gradation
    • Coarse Aggregate Angularity (Fractured/Crushed Particles)
    • Flat & Elongated Particles (5:1)
    • Sand Equivalent
    • Natural Sand Percentage
    • For KCMMB A1 mixes only
      • Percent of Total Aggregate Consisting of Chat, Crushed Sandstone, Crushed Gravel, Crushed Slag, or Crushed Porphyry
  • Superpave Testing
    • Initial Gyrations
    • Design Gyrations
    • Percent of Gmm at Initial Gyration
    • Maximum Theoretical Specific Gravity of Mixture (Gmm at design AC)
    • Bulk Specific Gravity of Mixture (Gmb at design AC)
    • Temperature of the Mixture (°F)
    • Tensile Strength Ratio
    • Design Asphalt Content
    • Design Air Voids
    • Design VMA
    • Design VEA
    • Effective Specific Gravity of Aggregate
    • Dust to Binder Ratio

PRODUCTION SUMBITTAL REQUIREMENTS

Asphalt content of FRAP stockpiles shall be reported during production to KCMMB through the website via the Asphalt Content Submittal form. Asphalt content ignition tests shall be run at the frequency as described in the KCMMB Asphalt Material Specification. Test results shall be submitted within the first 5 business days of the month for production in the previous calendar month.

YEARLY AGGREGATE TESTING

Aggregates shall have been tested and approved within the previous 12 months of the mix design submission. Following initial aggregate approval, KCMMB will keep a list of approved virgin aggregates and recycled aggregates with the associated Bulk Dry Specific Gravities. A value for the Bulk Dry Specific Gravity will be considered verified if the yearly specific gravity test value does not vary from the value on the list by more than the following:

Virgin Aggregate
Coarse Aggregate Fraction
(+) #4 Material

Virgin Aggregate
Fine Aggregate Fraction
(-) #4 Material


Recycled Aggregates

0.040

0.060

0.040

 

If the verification test value varies by more than that listed above, the approved Bulk Dry Specific Gravity value will be modified to the tested value. This may require updated mix design testing for Asphalt suppliers.

Please Contact the KCMMB administrators with questions.

Lucas Rosenbaum
George Butler Associates, Inc.
Tel. 913.577.8271 

George Kiuna
George Butler Associates, Inc.
Tel. 913.577.8353