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350SUBBASE

PA · 2026 Standard SpecificationsBook pages 261262View official source ↗
1.Virgin Material Mixtures. Size, uniformly grade, and combine aggregate fractions, asphalt binder ,

and either WMA Technology additive(s) or modifier(s) in proportions to produce a JMF that conforms to the material, gradation, and volumetric Superpave Asphalt Mixture Design requirements according to Bulletin 27, Chapter 2A . Produce an asphalt mixture for the specified nominal maximum aggregate size and design ESALs except as procedurally modified by the WMA Technology Manufacturer Technical Representative (Technical Representative) to address laboratory procedures when preparing, compacting and testing asphalt mixtures to achieve a uniform blend. Special additive(s) or modifier(s) need not be used if mixture temperature, workability, and compaction can be achieved solely through plant mechanical modification to produce foamed asphalt. Do not incorporat e the WMA Technology additive, modifier or process during the volumetric asphalt mixture design process , so that the JMF volumetrics and material percentages are based on a mixture with no WMA Technology . Only use the WMA Technology additive, modifier or process to evaluate results from moisture susceptibility testing during the mix design process . Develop an asphalt mixture JMF, then incorporate the WMA Technology additive, modifier, or process into that JMF during production. Create an asphalt JMF cover sheet ( Form TR-448A) for approval containing the WMA Technology used, additive dosage rate or percent water added for foaming, material code, and the TSR data from the moisture susceptibility testing. Submit a copy of each completed JMF, signed by a certified Asphalt Level 2 plant technician, to the DME /DMM at least 3 weeks before the planned start of mixture production. Include a list of all material sources and the asphalt mixture producer in the JMF. Provide the calibration factors (C ¦ and 200 C¦) according to PTM No. 757 with the JMF. Do not start mixture production until after the DME /DMM reviews the JMF. Submit a new JMF with a change in material sources or if a new JMF is necessary to produce a mixture conforming to this specification.

1.a Producer QC Plan. Each producer must prepare a QC Plan as specified in Section 106 and conforming to the additional QC requirements of this specification. Submit the QC Plan to the DME /DMM annually at least 3 weeks before the planned start of mixture production and do not start production until the DME /DMM reviews the QC Plan.

1.a.1 QC Organization Chart.

• Names of personnel responsible for QC.

• Area of responsibility of each individual.

• List outside agencies, ( e.g., testing laboratories ) and a descr iption of services provided.

1.a.2 Testing Plan with Action Points.

• List of all tests to be performed.

• Frequency of testing.

• List act

Source: Pennsylvania Department of Transportation Specifications, 2026 Edition. Pages 261262 of 1,522.