Research Article

Quantifying Repeatability Reproducibility Sources of Error and Capacity of a Measurement: Demonstrated Using Laboratory Soil Plasticity Tests

Table 6

Laboratory testing matrix used in this study.

Test methodNo. of soil samples (I)No. of operators (J)No. of replicate tests per operator (m)

Casagrande cup LL test5a33
Fall cone LL test
ASTM PL test
Bar linear shrinkage test

aMinus No. 40 sieved granular-road surface material with 0%, 3%, 6%, 9%, and 12% added bentonite.