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Image Analysis of HMA to Characterize the Aggregate Distribution - PowerPoint PPT Presentation

Sep 21, 2022 •504 likes •602 views

Image Analysis of HMA to Characterize the Aggregate Distribution Sanjeev Adhikari Zhanping You Analysis of Image Aggregate Gradation Aggregate Orientation Image Processing Raw Image Fine Image Processing Processed with density

  1. Image Analysis of HMA to Characterize the Aggregate Distribution Sanjeev Adhikari Zhanping You

  2. Analysis of Image • Aggregate Gradation • Aggregate Orientation

  3. Image Processing Raw Image Fine Image Processing Processed with density index Mastic: � 164 Aggregate: >164 Using Image-Pro software

  4. Sieving of Aggregates 8mm-6.3mm 10mm-8mm 12.5mm-10mm All aggregates 6.3mm-4mm 4mm-2mm 2mm-1mm <1mm

  5. Aggregates Gradation from Images Total 12.5-10mm 10-8mm 8-6.3mm 6.3-4mm 4-2mm 2-1mm <1mm Area 7197.984 744.3232 743.7165 1080.748 1349.627 1685.156 955.7116 636.7655 % Area 10.34072 10.33229 15.0146 18.75009 23.41152 13.2775 8.846447 From Image Sieve size Retain Passing sieve Actual (mm) (%) (%) Gradation 20 0 100 100 It is difficult to capture 14 0 100 97.2 aggregate less than 1mm 12.5 0 100 92.7 10 10.34072 89.65928 79.6 8 10.33229 79.32698 68.5 6.3 15.0146 64.31239 58.6 4 18.75009 45.5623 46.8 2 23.41152 22.15078 36.4 1 13.2775 8.873285 28.6 0.315 8.846447 0 15.8 0.08 0 7.6

  6. Concept: Aggregate Orientation --Angle histogram using polar plot Vertical Horizontal

  7. Aggregate orientation of HMA image Aggregates greater than 2mm All aggregates

  8. Aggregate Orientation: 1 12.5mm-10mm 10mm-8mm 6.3mm-4mm 8mm-6.3mm

  9. Aggregate Orientation: 2 4mm-2mm 2mm-1mm <1mm All aggregates

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