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RTFO Oven Verification Record

This procedure describes the Rolling Thin Film Oven (RTFO) Test, used to simulate the short-term aging of asphalt binders that occurs during the hot-mixing process
Ergon - Lubbock 14842
05/25/2022

RTFO Oven Verification Record

This procedure describes the Rolling Thin Film Oven (RTFO) Test, used to simulate the short-term aging of asphalt binders that occurs during the hot-mixing process

    Verified By

    Date

    Equipment/Model

    Identification No.

    Serial No.

    Verification Equipment Used

    Results

    Thermometer

    Serial number (Miller & Weber SN: 13C-86)

    Distance from thermometer bulb to right side of the over (2 +/- 3/8 in)

    Bulb level with carriage axis within 25 mm (1 in)

    • Yes
    • No
    • N / A

    Apparatus

    Rotation rate (15.0 +/2 0.2 RPM or 15 rev/60 +/- 0.8 sec)

    Distance of air jet orifice to open end of sample container (6.4 +/- 0.8mm or 1/4 +/- 1/16in)

    Flow meter standardized every 12 months (4000 +/- 100 mL/min)

    Check horizontal axis of the bottles in the carriage level within +/- 1 degree)

    Temp Controlling System

    Temperature recovery time to 163 +/- 1 degree C within 10 minutes

    • Yes
    • No
    • N / A

    Time to temp

    Temp at 0.5 hr

    Temp at 1.0 hr

    Temp at 1.5 hr

    RTFO Maintenance

    Grease the chain

    • Yes
    • No
    • N / A

    Remove air nozzle and clean

    • Yes
    • No
    • N / A

    Air orifice (0.965-1.067 mm)

    Replace carriage bushing

    • Yes
    • No
    • N / A

    Check that nozzle and bottle gap is 1/4 inches

    • Yes
    • No
    • N / A

    Check fan bearing

    • Yes
    • No
    • N / A

    Ensure that carriage is level according to T240

    • Yes
    • No
    • N / A

    Action Recommended

    Comments

Source: Ergon - Lubbock 14842 (Community Member)

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