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| All equipment shall be inspected for compliance with appropriate dimensions, as stated in each standard, as well as to determine if it is in satisfactory operating condition (i.e.; adherence of mortar, deformed molds, etc.). Inspection shall occur at least annually, or whenever there is reason to suspect nonconformance with the standard. |
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| Item | Cylinder molds | |
| Description | Steel, cast iron, or other nonabsorbent, nonreactive material of a size consistent with the nominal maximum size of the coarse aggregate | |
| Calibration Item | Dimensions, shape, water leakage | |
| Calibration Procedure |
AASHTO T 23 Sec. 4.2.1 |
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| Calibration Interval | See AASHTO M 205 | |
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| Item | Tamping Rod | |
| Description | 5/8" diameter and 24" in length and 3/8" diameter and 12" in length straight steel rods, with hemispherical tips | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Internal Vibrator | |
| Description | 7000 vibrations per minute, or greater, while in use and of appropriate size . | |
| Calibration Item | Frequency | |
| Calibration Procedure | AASHTO T 23 Sec. 4.5 With a vibrating reed tachometer |
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| Calibration Interval | None stated | |
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| Item | External Vibrator | |
| Description | 3600 vibrations per minute, or greater.. | |
| Calibration Item | Frequency | |
| Calibration Procedure | AASHTO T 23 Sec. 4.5 With a vibrating reed tachometer |
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| Calibration Interval | None stated | |
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| Item | Mallet | |
| Description | Rubber or rawhide, 1.25 + 0.50 lb.. | |
| Calibration Item | Mass | |
| Calibration Procedure | Weigh with a balance | |
| Calibration Interval | None stated | |
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| Item | Thermometer | |
| Description | For measuring the temperature of the concrete | |
| Calibration Item | Temperature reading | |
| Calibration Procedure | ASTM C 1064 via AASHTO T 23 Sec. 7.3 | |
| Calibration Interval | See ASTM C 1064 | |
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| Item | Miscellaneous Tools | |
| Description | Shovels, scoops, handheld float, trowel | |
| Calibration Item | See the general statement above. | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Mold cover material | |
| Description | Nonabsorbent, nonreactive plate or sheet of impervious plastic | |
| Calibration Item | See the general statement above | |
| Calibration Procedure | ||
| Calibration Interval | ||
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| Item | Specimen storage during initial curing | |
| Description | Storage unit with cooling and/or heating devices as well as a max/min thermometer | |
| Calibration Item | Calcium hydroxide saturation, thermometer | |
| Calibration Procedure | AASHTO M 201 | |
| Calibration Interval | See AASHTO M 201 | |
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