Precision Estimates of AASHTO T267: Determination of Organic Content in Soils by Loss on Ignition (2010)

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29 APPENDIX C- ORGANIC CONTENT OF SILT BLENDS AND COMPUTED ASTM E691 STATISTICS

30 Table C-1: Unadjusted organic content (%) of three replicates of silt blends in the ILS study and the computed statistics according to ASTM E 691

31 Figure C-1: Unadjusted Median organic content values of silt and the corresponding error bands 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Silt 0% LabNumber M e d i a n 0.00 1.00 2.00 3.00 4.00 5.00 6.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Silt 2% LabNumber M e d i a n 0.00 2.00 4.00 6.00 8.00 10.00 12.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Silt 5% LabNumber M e d i a n 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Silt 8% LabNumber M e d i a n

32 Figure C-2: h and k consistency statistics of organic content measurements of silt -3.00 -2.00 -1.00 0.00 1.00 2.00 3.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 h Lab Number Silt 0% h critical -3.00 -2.00 -1.00 0.00 1.00 2.00 3.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 h Lab Number Silt 2% h critical -3.00 -2.00 -1.00 0.00 1.00 2.00 3.00 4.00 5.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 h Lab Number Silt 5% h critical 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 k Lab Number Silt 0% k critical 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 k Lab Number Silt 2% k critical 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 k Lab Number Silt 5% k critical 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 1 3 5 7 9 11 13 15 17 19 21 23 25 27 k Lab Number Silt 8% k critical -3.00 -2.00 -1.00 0.00 1.00 2.00 3.00 1 3 5 7 9 11 13 15 17 19 21 23 25 27 h Lab Number Silt 8% h critical

33 Table C-2: Adjusted organic content (%) of three replicates of silt blends in the ILS study and the computed statistics according to ASTM E 691

34 Figure C-3: Adjusted Median organic content values of silt and the corresponding error bands 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Adj Silt 2% LabNumber M ed ia n 0.00 2.00 4.00 6.00 8.00 10.00 12.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Adj Silt 5% LabNumber M ed ia n 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 1 3 5 7 9 11 13 15 17 19 22 24 26 28 Adj Silt 8% LabNumber M ed ia n