Precision Estimates of AASHTO T 180: Moisture-Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop (2010) / Chapter Skim
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From page 10... ...
8 CHAPTER 3- INTERLABORATORY TEST RESULTS AND ANALYSIS 3.1 Test Data The maximum density and optimum moisture content test data are provided in Table B-1 and Table B-2 of Appendix B Empty cells in the tables indicate that the laboratory did not submit data.
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9 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 1 3 5 7 9 11 13 15 17 19 21 23 O pt im um W at er C on te nt , % Lab Number Coarse w/ Clay 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 1 3 5 7 9 11 13 15 17 19 21 23 O pt im um W at er C on te nt , % Lab Number Coarse w/ Silt 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 1 3 5 7 9 11 13 15 17 19 21 23 O pt im um W at er C on te nt , % Lab Number Fine w/ Clay 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 1 3 5 7 9 11 13 15 17 19 21 23 O pt im um W at er C on te nt , % Lab Number Fine w/ Silt Figure 3-2. Optimum Moisture Contents (%)
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10 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Coarse w/ Clay h critical -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Coarse w/ Silt h critical -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Fine w/ Clay h critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Coarse w/ Clay k critical 0.0 0.5 1.0 1.5 2.0 2.5 3.0 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Coarse w/ Silt k critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Fine w/ Clay k critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Fine w/ Silt k critical -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Fine w/ Silt h critical Figure 3-3. h and k consistency statistics of maximum density from ILS
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11 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Coarse w/ Clay h critical -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Coarse w/ Silt h critical -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Fine w/ Clay h critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Coarse w/ Clay k critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Coarse w/ Silt k critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Fine w/ Clay k critical 0.0 0.5 1.0 1.5 2.0 2.5 1 3 5 7 9 11 13 15 17 19 21 23 k Lab Number Fine w/ Silt k critical -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 4.0 1 3 5 7 9 11 13 15 17 19 21 23 h Lab Number Fine w/ Silt h critical Figure 3-4. h and k consistency statistics of optimum moisture content from ILS
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12 Table 3-1. Summary of Statistics of maximum dry density (lb/cu.
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13 The comparison of the computed and critical F values for 5% level of significance indicates that there is no significant difference in either Sr or SR Table 3-3. t-values on comparison of the average maximum dry densities of the blends in the ILS estimates of maximum dry density of the coarse-graded and fine-graded blends.
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14 types (limestone dust from sand) in the fine-grained materials.
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15 3.5 Precision Estimates based on the ILS data Table 3-7 provides the repeatability and reproducibility precision estimates for maximum density and optimum moisture content measurements of the soil-aggregate blends in the ILS. Since the variability of the measurements were not significantly different for the different blends as was indicated by the F-test, the standard deviations were combined to prepare the 1s and d2s limits for single-operator and multilaboratory precisions in Table 3-7.
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