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AccuGrade Compaction GPS Mapping & Measurement System

AccuGrade Compaction GPS Mapping & Measurement System. AccuGrade Connected Worksite. ARO. A ccuGrade R eady O ption. AccuGrade Compaction. AccuGrade Compaction. System Components Vibratory Control System Mapping System. Accelerometer MEASURES STIFFNESS (not density) Microcontrollers

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AccuGrade Compaction GPS Mapping & Measurement System

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  1. AccuGrade Compaction GPS Mapping & Measurement System

  2. AccuGrade Connected Worksite ARO AccuGrade Ready Option

  3. AccuGrade Compaction

  4. AccuGrade Compaction • System Components • Vibratory Control System • Mapping System • Accelerometer MEASURES STIFFNESS (not density) • Microcontrollers • Vibration control switches at operator station • CCV (Caterpillar Compaction Value) • Mast mounted GPS receiver • Data Radio • Drum slope sensor • In-cab display

  5. Radio GPS Receiver Display Controllers Slope Sensor Accelerometer AccuGrade Compaction

  6. AccuGrade Compaction - WHY? • FACT: The road construction industry is changing. • Pavement Design Method • Contract Procurement Methods • Quality Control Parameters

  7. Empirical Design • Pavement Design • Outdated methodology • 1958 AASHTO Test Road • Results: Design of Pavement Structures • Output is THICKNESS • Contract Procurement • Quality Control

  8. Mechanistic-Empirical Design • 1987 FHWA Long-Term Pavement Program (LTPP) • 20 Year Study of Pavement Sections • 2500 Locations US/Canada • M-E Design • Historical Data of Pavements • Inputs Increased • Prediction Models Developed • Output is PERFORMANCE

  9. AccuGrade Compactor Stiffness Values Mechanistic-Empirical Design Model AccuGrade Compaction • Environment • Traffic • Materials • Volumetric Properties PERFORMANCE

  10. AccuGrade Compaction - WHY? • Pavement Design • Contract Procurement • Material Costs • Infrastructure Age • Priorities • Road Budgets • Traffic / Loads • Quality Control Creative Contract Procurement

  11. Owner RISK Contractor Method DBFO Contract Procurement • Method • End Result • Performance Based • Warranty • PPP • (Public Private Partnership) • DBFO • (Design, Build, Finance, Operate)

  12. Money for DOT’s • More projects sooner • Higher Quality • Shifted Risk What’s Their Solution • Indiana East-West Tollway • $3.8B - 75 yrs. • Trans-Texas Corridor • $1.35B - 50 yrs. • Chicago Skyway • $1.83B - 99 yrs. • Detroit-Windsor Tunnel • Sydney Toll Roads QUALITY = Profit

  13. Private Investment: Higher Quality Timely Completion Europe Method DBFO

  14. AccuGrade Compaction - WHY? • Pavement Design • Contract Procurement • Quality Control • Real-Time Corrections • Timely Reporting • Focused Testing • Time Management • Position & Time Stamp • Safety

  15. Quality Control • AccuGrade Compaction • Instrument -Based System • Requires Calibration • Side-by-Side Testing • Develop Compaction Curves • Develop a Database / Targets • Develop a Comfort Level

  16. Implementation • FHWA Pooled Fund Study • Thirteen states • Varying materials • Three years • Four projects in ‘08 Accelerated Implementation of Intelligent Compaction Technology for Embankment Subgrade Soils, Aggregate Base, and Asphalt Pavement Materials

  17. Typical Procedure • Map existing base • Identify pre-existing anomalies • Compact in “Production Mode” • High Amplitude • Production Speed & Direction • Map the layer “Proofing Mode” • Low Amplitude • Forward Direction • Compare to established methods • Develop a Target Value for the AccuGrade Measurement System

  18. AccuGrade Compaction • AccuGrade Compaction is a TOOL. • Can use for Method Spec. • (Pass Counting) • Also evaluate stiffness values • Find undesirable areas • Test and evaluate those areas • More in-situ testing = Less in- situ testing • Grade Checker • As-Built Data • Production Calculations • Grade “Busts”

  19. Compaction Target Value (CTV) = 42 Current MnDOT QC/QA % Target CCV IC Data >130% 55 26% 90-130% 38 - 55 68% 80-90% 34 - 38 4% 70-80% 29 - 34 1% <70% < 29 < 1% Acceptance Criteria: Over 90% of IC Data should be greater than 90% of Compactor Target Note the high CCV’s at the Edges!!!

  20. AccuGrade Technology • Production - Completion Time • Quality - Rework • Pavement Life - Maintenance WHO WINS? - EVERYONE

  21. In Development • Machine Drive Power • Measure energy to propel machine • Ideal for padfoot rollers (cohesive soils) • AccuGrade for Asphalt • Temperature Mapping • Pass Counting • Common display

  22. AccuGrade Office • Converts engineering design files to AccuGrade® compatible format • Supports wireless communication between the machine and office • Compatible with all AccuGrade® machines • Supports text messaging in real time with operator • Productivity Module for cycle times, as-built data, and production related information • Compaction Module for detailed compaction analysis

  23. AccuGrade Office Compaction Module: Quality Control parameters logged.

  24. Builders -vs- Manufacturers • Caterpillar was a BUILDER • Today - MANUFACTURER • Success related to Quality Initiatives • Road Builders will become Road Manufacturers

  25. Thank You ARF Question?

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