Lee Gallivan

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Presentation by Lee Gallivan of the Federal Highway Administration (FHWA) on the federal "Every Day Counts" initiative and Intelligent Compaction, delivered at the CalAPA Fall Asphalt Pavement Conference Oct. 24, 2013 in Sacramento, Calif.

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  • Minimum IC Roller Requirements
  • OK, let’s talk about a basic term (or actually an acronym) that we will be using a lot for the rest of the day. It is ICMV, which short for Intelligent Compaction Measurement Value. All of the major IC vendors use a different stiffness value that is calculated from the accelerometer data received during the compaction process. Note that we list some of the vendors and their respective stiffness values. ICMV is simply a generic term that describes any of the various vendors stiffness measurements.
  • Conventional sampling rate is 1 in 1 millions vs. 100% coverage for IC.
  • Lee Gallivan

    1. 1. California Intelligent Compaction Density Evaluation Summary California Asphalt Paving Association Sacramento, California Victor (Lee) Gallivan – FHWA Asphalt Pavement Engineer Office of Asset Management, Pavement and Construction October 24, 2013
    2. 2. What is Intelligent Compaction?
    3. 3. What is Intelligent Compaction? An Innovation in Compaction Control
    4. 4. ---Definition--What is “Intelligence?” – Oxford Dictionary: “…ability to vary behavior in response to varying situations and requirements” – Ability to: • • • • Collect information Analyze information Make an appropriate decision Execute the decision 3000-4000 TIMES A MINUTE
    5. 5. Intelligent Compaction Includes Global Positioning System GPS Temperature Sensors Onboard Report System Continuous Measurement System Courtesy of Bomag
    6. 6. What is Intelligent Compaction? Current IC technology is accelerometer-based. Vibratory Single Drum Soil Roller Vibratory Tandem Drum Asphalt Roller
    7. 7. What is Intelligent Compaction?  IC Vibratory Roller Requirements – Accelerometers mounted in or about the drum to monitor applied compaction efforts; – Real Time Kinematics (RTK) or Virtual Reference System (VRS) GPS system for roller positioning measurement computer systems; – Integrated measurement computer systems to collect & analyze roller and pavement response information; – GPS-Based documentation system – On-Board, Color-coded display – Surface temperature instrumentation (HMA) system
    8. 8. Tandem Drum IC Roller Suppliers Bomag Caterpillar HAMM-Wirtgen Sakai
    9. 9. IC Measurement Value (ICMV) ICMV is a generic term used to describe all suppliers’ measurement value  IC suppliers have various “stiffness” (or measurement) values  – Bomag – Evib (MN/m²) – Caterpillar/Trimble – CMV – Hamm/Wirtgen – HMV – Sakai - CCV  VEDA 3.0 (Software)
    10. 10. Global Positioning System (GPS) GPS Base Station GPS Radio & Receiver GPS Rover Real Time Kinematic (RTK) GPS Precision
    11. 11. Intelligent Compaction Goals 2007 Short Term Goals Improved Density More Uniform Density More efficient compaction process Operator Accountability Correlate Measurements with Field Densities Real-time Density Control (QC) Long Term Goals Compaction Control Specifications Real-time Density Acceptance Future Goals Tie to Design Guide (verify design)? Performance specifications?
    12. 12. FHWA Pooled Fund IC Project 2008-2011 Demonstrate HMA IC Technologies to Agencies and Industry  Develop Experience and Expertise within DOT Organizations  Assist the DOT’s in the development of Quality Control Specifications  Identification and prioritization for further research and data analysis 
    13. 13. FHWA IC Field Demo 2008-2011 AK WA VT MT ME ND OR MN WI ID NY SD WY MI NE PA IA NV IL UT WV KS AZ OH CO CA Guam IN CT NJ DE MD OK NM MO VA KY DC NC TN AR SC MS AL GA VI HI TX LA FHWA TPF HfL/SHRP2 FL PR
    14. 14. FHWA IC-HMA Density Study 2011-2014 Relate IC measurement and other records to HMA in-place density  Improve usage of IC for QC  ICMV Coring ICMV Target Coring ICMV Target ICMV Target %Gmm
    15. 15. FHWA IC Density Evaluation 2012-2014 AK WA VT MT ME ND OR MN WI ID NY SD WY MI NE PA IA NV IL UT Guam CT NJ DE MD OH WV KS AZ IN CO CA NH MA RI OK NM MO VA KY DC NC TN AR SC MS AL GA VI HI TX LA 2012 2013 2014 FL PR
    16. 16. 1 / 1,000,000 100 % coverage Courtesy of Caterpillar
    17. 17. California Paving Project - 2006  Inconsistent Roller Coverage Shoulder (Supported) Paving Direction Longitudinal Joint Courtesy Sakai America
    18. 18. Improved Rolling Patterns Before After Indiana ICPF Project Sakai IC roller
    19. 19. Benefits of IC Improve compaction… better performance Improve efficiency… cost savings Increase information… better QC
    20. 20. CA IC Demo Project      I-80, Vacaville and Dixon, CA Teichert Construction - North Region *** Sept. 4-6, 2013 Night paving 3” Intermediate Course *** California License # 8, the oldest active license (125 years) in the state.
    21. 21. TB01A Lane 1 TB01B Lane 2
    22. 22. TB02 EB Lane3
    23. 23. MTV Paving
    24. 24. Hamm IC compaction Bomag IC compaction Caterpillar IC compaction NG and temp measurements
    25. 25. 1500 ft 50 ft spacing NG, LWD-a (after each pass) and GPS NG, GPS, Coring LWD-a, FWD, GPR paving width paving width Roller 2 IC Compaction (breakdown) Roller 1 IC Compaction (intermediate) paving width Roller 3 Compaction (finishing)
    26. 26. FWD test Coring NG and Temp measurements Core
    27. 27. Open house audience Host – Chuck Suszko, Caltrans Open house audience Speaker – Lee Gallivan, FHWA
    28. 28. Hamm IC Data (Night 1)
    29. 29. HMV Temperature Pass count
    30. 30. CAT IC Data (Night 2)
    31. 31. CMV Temperature Pass count
    32. 32. Bomag IC Data (Night 2)
    33. 33. Evib Temperature Pass count
    34. 34. Compaction Curves NG (%Gmm) Temperature (°F) 300 95 280 90 260 240 85 220 200 80 180 160 75 140 120 70 0 paver 1 2 Hamm 3 Passes 4 5 6 0 paver Bomag 1 2 3 Passes Hamm TB01 Pass-by-Pass IC data vs. NG Density T1 4 Bomag 5 6
    35. 35. Compaction Curves Temperature (°F) NG (%Gmm) 95 300 280 90 85 C H H C H 260 240 220 200 80 C 180 H H C H 160 75 140 120 70 0 paver 2 4 Hamm/Cat 6 Passes 8 10 12 Bomag 0 paver 2 4 6 Passes Hamm/Cat TB01 Pass-by-Pass IC data vs. NG Density T2 8 Bomag 10 12
    36. 36. Compaction Curves Temperature (°F) NG (%Gmm) 95 300 280 90 260 240 85 220 200 80 180 160 75 140 120 70 0 paver 2 Cat 4 Passes 6 8 10 Bomag 0 paver 2 Cat 4 Passes Bomag TB02 Pass-by-Pass IC data vs. NG Density T3 6 8 10
    37. 37. Major Findings      IC improve consistent rolling patterns – esp. night paving IC is proven for QC IC is not for acceptance – at least for now GPS is still a challenge IC training is crucial for success
    38. 38. New and Exciting FHWA Initiative “Advancement of Innovative Asphalt Technology” Contractor: NAPA (Dr. Audrey Copeland) Period: 5-years (Starting October 2013) Effort: Conferences, Seminars, Webinars, FHWA Technical Information, Best Practice Guides, News Articles, etc. Scope: Recycling Materials, In-Place Recycling Technologies, Asphalt Pavement Materials (HMA, WMA, SMA, etc.) Designs and Construction Activities including Longitudinal Joints, Asphalt Materials compaction , Intelligent Compaction (IC), etc.
    39. 39. IC STANDARDS  2014 AASHTO Ballet distributed (September 2013) for a new provisional standard based on the FHWA IC Generic Specifications.
    40. 40. Federal Legislation - MAP-21 Moving Ahead for Progress in the 21st Century Act’’ or just ‘‘MAP–21’’ SEC. 1304. INNOVATIVE PROJECT DELIVERY METHODS (3) INNOVATIVE PROJECT DELIVERY Permits up to 100% Federal funding, e.g. Intelligent Compaction & In-place recycling technology
    41. 41. www.IntelligentCompaction.com
    42. 42. IC is a Beautiful Thing! (Alaska) Courtesy of Bruce Christianson
    43. 43. Victor (Lee) Gallivan, PE Asphalt Pavement Engineer Victor.Gallivan@dot.gov Ph: 317-226-7493 Cl: 317-605-4704 The secret of a good sermon/presentation is to have a good beginning and a good ending, and to have the two as close together as possible: George Burns

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