Application of LADAR in the Analysis of Aggregate Characteristics (2012) / Chapter Skim
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Pages 42-54
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From page 42... ...
42 Complete distributions provide more information when comparing the morphological characteristics of different aggregates. However, statistical parameters, such as mean and standard deviation, can be used to represent the entire distribution and distinguish different aggregates more concisely and conveniently.
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43 Sphericity FE Ratio Method Group Method Group FTI 1 FTI 1 AIMS II 2 AIMS II 2 Manual measurement 3 UIAIA 3 Manual measurement 4 Table 5-1. Analysis method groups for ANOVA.
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44 result groups for coarse aggregates in Set 2 [i.e., FTI results before Micro-Deval testing (hereinafter referred to as "MD-0 min.") , FTI results after 15 min.
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45 Micro-Deval tests. Future research should be conducted on this topic using the FTI system.
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46 Figure 5-3. One-way ANOVA of sphericity for copper ore ½-in.
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47 Figure 5-6. One-way ANOVA of FE ratio for copper ore 3⁄8-in.
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48 Figure 5-8. One-way ANOVA of FE ratio for copper ore #4 aggregates.
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49 Figure 5-9. One-way ANOVA of angularity for Broadway aggregates.
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50 Figure 5-11. One-way ANOVA of angularity for Maymead aggregates.
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51 Figure 5-13. One-way ANOVA of angularity for Salem aggregates.
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52 α = 0.02 3/4" Aggregates t-ratio p-value Statistical Result Description BFS 5.1939 1.0000 Fail to reject H0 No significant difference between the FTI and manual flatness ratios. CO -2.3407 0.0115 Reject H0 Manual flatness ratio is smaller than the FTI flatness ratio.
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53 Figure 5-17. t-test of flatness ratio for blast furnace slag ¾-in.
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54 Figure 5-21. t-test of flatness ratio for rounded glacial gravel ¾-in.
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