ASPHALT MATERIALS PRODUCTION SECTION 1014 647 Notify the Department’s Materials and Research Section of the quantity and time of scheduled release by 3:00 P.M. the non -holiday weekday before the release.
1014.12 Material Production Testing Equipment.
Maintain all the equipment used for handling, preparing, and testing materials in proper operating condition. Correct laboratory equipment malfunctions within 1 working day or production will be suspended. In the case of an equipment malfunction, the contr actor must develop a solution, approved by the engineer, to fulfil testing requirements. Document and maintain calibration records for the following referenced equipment in accordance with the manufacturer’s guidelines:
A.Superpave gyratory compactor: once every year.
B.Ovens: once every 3 months.
C.Vacuum container and gauge (rice bowls): once every 3 months, verified once every month.
D.Balances and scales: once every year.
E.Thermometers: once every year; verified once every month.
F.Gyratory compactor molds and base plates: once every year.
G.Mechanical shakers: once every year.
H.Verify sieve conditions daily by visual inspection. Document and file all calibrations. Provide records for review by the engineer at any time.
1014.13 Material Production Test Methods.
Perform material production tests in accordance with the following:
A.AASHTO T312 - Standard Method of Test for Preparing and Determining the Density of Asphalt Mixture Specimens by Means of the Superpave Gyratory Compactor.
B.AASHTO T166, Method A (rapid method) - Standard Method of Test for Bulk Specific gravity (GMB) of Compacted Asphalt Mixtures Using Saturated Surface -Dry Specimens.
C.AASHTO T308 - Standard Method of Test for Determining the Asphalt Binder Content of Asphalt Mixtures by the Ignition Method.
D.AASHTO T30 - Standard Method of Test for Mechanical Analysis of Extracted Aggregate.
E.AASHTO T209 - Standard Method of Test for Theoretical Maximum Specific gravity (G MM) and Density of Aspha lt Mixtures.
1014.14 Plant Production.
Operate plants per the manufacturer’s recommendations. Allow the engineer access to all parts of the mixing plant at all times for checking the adequacy of the equipment in use, inspecting the conditions and operation of the plant, verifying the weights or proportions and character of materials, and determinin g and checking the temperatures maintained in the preparation of the mixtures.
1014.15 Anti -stripping Additive Blending.
If required, blend anti -strip additive per the manufacturer’s recommendations. ASPHALT MATERIALS PRODUCTION SECTION 1014 648 1014.16 Silo Storage Systems. Convey the mixture from the plant to the storage system without a reduction in temperature, the segregation of the mix, or the oxidation of the asphalt. Store mixture for a maximum of 12 hours.
Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 657–658 of 779.