Equipment Checklist for AASHTO T 84 - 95
Specific Gravity and Absorption of Fine Aggregate
 
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.

 
Item Balance
Description Readable to 0.1% of sample mass or better
   
Calibration Item Verify mass readings
Calibration Procedure AASHTO M 231, Class G2
Calibration Interval 12 months
Item Sieves
Description #4, (or #8 as needed)
   
Calibration Item Check openings and physical condition
Calibration Procedure AASHTO M 92
Calibration Interval 6 months
Item Pycnometer
Description Adequate size such that volume (to calibration mark) is at least 50 percent greater than that required to accommodate the test sample
   
Calibration Item Check physical condition
Calibration Procedure Visual
Calibration Interval 12 months
Item Oven
Description Must be maintained at 110 ± 5 C
   
Calibration Item Verify temperature
Calibration Procedure Verify with calibrated thermometer
Calibration Interval 4 months
Item Cone and tamper
Description Conforming to dimensions listed in AASHTO T 84, paragraphs 4.3 and 4.4
   
Calibration Item Check physical condition
Calibration Procedure Measure dimensions
Calibration Interval 24 months
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
Item Incidental Equipment
Description Pans, spoon, hairdryer (optional)
   
Calibration Item Check physical condition
Calibration Procedure Visual
Calibration Interval 12 months
   
Reference the following specifications
AASHTO T 2 Standard Practice for Sampling Aggregates
AASHTO T 85 Specific Gravity and Absorption of Coarse Aggregate
AASHTO T 248 Reducing Samples of Aggregate to Testing Size
AASHTO T 255 Total Moisture Content of Aggregate by Drying