TPF-5 (443) DPS User Group Meeting Updates
This content provides updates and details from the TPF-5 (443) DPS User Group Meeting held on November 10, 2021. It covers various topics such as Ohio DOT updates, COVID-related issues, collection procedures, project details, repeat line tests, core calibrations, longitudinal joint scans, and more.
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Presentation Transcript
TPF-5 (443) DPS USER GROUP MEETING NOVEMBER 10, 2021
2021 OHIO DOT DPS UPDATES Craig E. Landefeld, P.E. ODOT Office of Pavement Engineering 2 | TPF-5 (443) DPS User Group Meeting
2021 1 STEP FORWARD - 2 STEPS BACK o COVID Issues o Staffing Issues o Contractor Issues 3 | TPF-5 (443) DPS User Group Meeting
2021 COLLECTION PROCEDURES o Air/Metal Calibration Daily o AM/PM Line Test o Swerve collection pattern o Acceptance Core Collection o Lab Gyratory Samples o Long Joint Collection Single Straddle 4 | TPF-5 (443) DPS User Group Meeting
COS-US36 PROJECT DETAILS o 7mi. Rural 4 Lane Divided o 1.5in -12.5mm Int. o 1.5in -12.5mm Surface o Hot joint on shoulders o Cold joint at lane line o 447 Joint Density Spec o Contractor Gyratories??? 5 | TPF-5 (443) DPS User Group Meeting
REPEAT LINE TESTS COS-36 Line Test Data 0.2 Difference Between Sensors 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0 2 4 6 8 10 12 Day Machine 1 Machine 2 Upper Limit Lower Limit 6 | TPF-5 (443) DPS User Group Meeting
COS-36 CORE CALIBRATIONS COS-36 Machine 1 Time COS-36 Machine 2 Time 98 98 97 97 y = 4.3148x + 70.599 R = 0.3184 y = 5.1099x + 65.677 R = 0.2602 96 96 95 95 94 94 93 93 92 92 91 91 4.9 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 7 | TPF-5 (443) DPS User Group Meeting
COS-36 CORE CALIBRATIONS COS-36 Machine 1 Distance COS-36 Machine 2 Distance 98 98 97 97 y = 5.4025x + 63.737 R = 0.3865 96 96 95 95 94 94 93 93 92 92 y = 2.4868x + 80.749 R = 0.05 91 91 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6 6.1 5.45 5.5 5.55 5.6 5.65 5.7 5.75 8 | TPF-5 (443) DPS User Group Meeting
COS-36 LONGITUDINAL JOINT SCANS Average Dielectric on Longitudinal Joint Straddle Sensors Average Dielectric on Longitudinal Joint Single vs Straddle vs Joint Core 6.0 6.0 5.8 5.8 5.6 5.6 Dielectric Dielectric 5.4 5.4 5.2 5.0 5.2 4.8 180 - 188 192 - 200 216 - 224 278 - 288 5.0 Stations 180 - 188 192 - 200 216 - 224 Stations 278 - 288 288 - 298 M1 Single M2 Single M1 Straddle M1 203 M1 209 M2 182 M2 183 M2 Straddle M1 Joint Core M2 Joint Core 9 | TPF-5 (443) DPS User Group Meeting
FAI-664 PROJECT DETAILS o 5mi. Rural 2-lane o 1.0in o 1.25in. Surface Course o Control Section o Type 1 Surface, PG 70-22M, 20% RAP o High RAP o Balanced Mix Design o Type 1 Surface, PG 70-22 w. recycling agent, 55-60% RAP 10 | TPF-5 (443) DPS User Group Meeting
REPEAT LINE TESTS FAI-664 Line Test Data 0.2 0.15 Difference Between Sensors 0.1 0.05 0 -0.05 -0.1 -0.15 -0.2 -0.25 -0.3 0 1 2 3 4 5 6 7 8 Day Machine 1 Machine 2 Upper Limit Lower Limit 11 | TPF-5 (443) DPS User Group Meeting
FAI-664 CORE CALIBRATIONS CONTROL SECTION 98.0 50% 120% y = 5.4844x + 66.582 R = 0.7014 45% 97.0 100% 40% 96.0 35% 80% 30% Frequency Density (%) 95.0 25% 60% 94.0 20% 40% 15% 93.0 10% 20% 92.0 5% 0% 0% 91.0 91% 92% 93% 94% Density (%) 95% 96% 97% 98% 4.6 4.7 4.8 4.9 5 Dielectric 5.1 5.2 5.3 5.4 5.5 12 | TPF-5 (443) DPS User Group Meeting
FAI-664 CORE CALIBRATIONS HIGH RAP SECTION 98.0 25% 120% y = 8.2906x + 45.361 R = 0.8629 96.0 100% 20% 94.0 80% 15% Density (%) Frequency 92.0 60% 10% 90.0 40% 5% 88.0 20% 86.0 0% 0% 5 5.2 5.4 5.6 5.8 6 6.2 87% 88% 89% 90% 91% 92% Density 93% 94% 95% 96% 97% 98% Dielectric 13 | TPF-5 (443) DPS User Group Meeting
MACHINE COMPARISONS M1 M2 M1 M2 M1 M2 MAD-70 Mean Std Dev COS-36 Mean Std Dev FAI-664 Mean Std Dev 6.26 0.298 6.11 0.299 5.36 0.247 5.33 0.253 5.05 0.121 5.03 0.124 2020 MAD-70 Dielectrics 2021 FAI-664 Dielectrics 2021 COS-36 Dielectrics 3.5 3.5 3.5 3 3 3 2.5 2.5 2.5 2 2 2 1.5 1.5 1.5 1 1 1 0.5 0.5 0.5 0 0 0 4.5 5 5.5 6 6.5 7 7.5 4.5 5 5.5 6 6.5 7 7.5 4.5 5 5.5 6 6.5 7 7.5 1 2 1 2 1 2 14 | TPF-5 (443) DPS User Group Meeting
THINGS TO CONSIDER??? 1. Causes of sensor variability? 2. Causes of poor core calibrations? 3. How do we define comparison 4. Is the effect of joint enrichment an issue? 5. Could we use this as a tool to assess Void Reducing Asphalt Membrane (VRAM)? 15 | TPF-5 (443) DPS User Group Meeting
WHATS NEXT ??? 1. Machine Comparisons Precision & Bias - QC/QA Procedure & Comparison Tolerances 2. Gyratory Procedures - Work with Producers 3. Collection Procedures (Swerve? Long. Joints?) - Swerve / Linear - Longitudinal Joints 4. VETA Analysis - 2022 Projects 5. Specs for Pilot/Shadow Projects 16 | TPF-5 (443) DPS User Group Meeting
QUESTIONS ? Last updated 2/18/2025 17 | TPF-5 (443) DPS User Group Meeting
