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AASHTO T 85 / ASTM C 127

Specific Gravity of Absorption of Coarse Aggregate

This method covers the determination of specific gravity, expressed as bulk, bulk (SSD), or apparent, and absorption of coarse aggregate after 15-19 hours in water. Not intended for lightweight aggregates.

Equipment List

Sample Pans

This item should be listed on the laboratory inventory list.

Thermometer

Laboratory Thermometer Equipment Description
Laboratory Thermometer Calibration Worksheet
Laboratory Thermometer In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Water Bath Suspension Equipment

This item is required for T85

Water Bath (73.4 F)

This item should be listed on the laboratory inventory list.
This item should be calibrated.

Towel

This item is required for T85

Wire Basket

This item should be listed on the laboratory inventory list.

Scale (1 g)

Scale Equipment Description
Scale Calibration Worksheet
Scale In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Oven

Oven Equipment Description
Oven Calibration Worksheet
Oven In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Verify #4 Sieve (performed by inspector)

This item is required for T85

Verify Aggregates Water Bath Temperature (performed by inspector)

This item is required for T85

Verify Soil/Aggregates Oven Temperature (performed by inspector)

This item is required for T85

Sieve - #4

Coarse Sieve Equipment Description
Coarse Sieve Calibration Worksheet
Coarse Sieve In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Sieve - #8

Fine Sieve Equipment Description
Fine Sieve Calibration Worksheet
Fine Sieve In-House Procedure
This item should be listed on the laboratory inventory list.
This item should be calibrated.

Water Bath Heater

This item is required for T85