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| All equipment shall be inspected for compliance with appropriate dimension s, as stated in each standard, as well as to determine if it is in satisfactory operation condition (i.e. clean, tight and serviceable). Inspection shall occur at least annually, or whenever there is reason to suspect nonconformance with the standard. |
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| Item | SHRP Gyratory Compactor with Specimen Height Measurement and Recording Device | |
| Description | An electrohydraulic or electromechanical compactor with a ram and ram heads that are restrained from revolving during compaction, the ram axis perpendicular to the platen of compactor. The specimens shall rotate at a rate of 30.0 ± 0.5 gyrations per minute while tilted at an angle of 1.25 ± 0.02 degrees, and compacted by a pressure of 600 ± 18 kPa. The compactor shall allow the specimen mold to revolve freely on its tilted axis during gyration. | |
| Calibration Item | Verify height, pressure, angle, speed | |
| Calibration Procedure | As per manufacturer's instructions | |
| Calibration Interval | b) as directed by manufacturer | |
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| Item | Specimen Molds | |
| Description | Inside diameter of 149.90 to 150.00 mm and height of at least 250 mm, smooth, steel walls that are at least 7.5 mm thick and hardened to at least Rockwell hardness of C48. | |
| Calibration Item | Verify mold dimensions and check physical condition | |
| Calibration Procedure | Measure physical dimensions | |
| Calibration Interval | 6 months | |
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| Item | Ram Heads and Mold Bottoms | |
| Description | Diameter of 149.90 to 149.75 mm and height of at least 250 mm, smooth, steel walls that are at least 7.5 mm thick and hardened to at least Rockwell hardness of C48. | |
| Calibration Item | Verify plate dimensions and check physical condition | |
| Calibration Procedure | Measure physical dimensions | |
| Calibration Interval | 6 months | |
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| Item | Balance | |
| Description | Readable to 0.1% of sample mass or better | |
| Calibration Item | Verify mass readings | |
| Calibration Procedure | AASHTO M 231, Class G5 | |
| Calibration Interval | 12 months | |
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| Item | Thermometer | |
| Description | Capable of measuring temperatures between 10 and 232 C. | |
| Calibration Item | Verify temperature readings | |
| Calibration Procedure | ASTM E 1, ASTM E 77 | |
| Calibration Interval | 6 months | |
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| Item | Oven | |
| Description | Thermostatically controlled to ± 3 C, capable of maintaining up to 176 ± 3 C | |
| Calibration Item | Verify temperature readings | |
| Calibration Procedure | Verify with calibrated thermometer | |
| Calibration Interval | 4 months | |
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| Item | Thermometer | |
| Description | Capable of accurately measuring temperatures used in this test method | |
| Calibration Item | Verify temperature readings | |
| Calibration Procedure | ASTM E 1, ASTM E 77 | |
| Calibration Interval | 6 months | |
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| Item | Incidental Equipment | |
| Description | Flat bottom metal pans, containers, mechanical mixer (optional), scoop, spoon, trowel, spatula, gloves, paper disks, lubricating materials recommended by compactor manufacturer | |
| Calibration Item | Check physical condition | |
| Calibration Procedure | Visual | |
| Calibration Interval | 6 months | |
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| Reference the following specifications | ||
| AASHTO T 166 | Bulk Specific Gravity of Compacted Bituminous Mixtures Using Saturated Surface-Dry Specimens | |
| AASHTO T 209 | Theoretical Maximum specific Gravity and Density of Bituminous Paving Mixtures | |
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