AASHTO T 90
Determining the Plastic Limit and Plasticity Index of Soils
This test procedure is used to determine the plastic limit and plasticity index of soils.
Equipment List
Spatula
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Scale (0.01 g)
Scale Equipment Description
Scale Calibration Worksheet
Scale In-House Procedure
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This item should be calibrated.
Porcelain Mixing Dish
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Rolling Surface
Plastic Limit Rolling Device Equipment Description
Plastic Limit Rolling Device Calibration Worksheet
Plastic Limit Rolling Device In-House Procedure
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Oven
Oven Equipment Description
Oven Calibration Worksheet
Oven In-House Procedure
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This item should be calibrated.
Moisture Content Containers (Small)
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Sieve - #40
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.