Observations and Recommendations Accelerated Pavement Testing & Equipment

1. Observations and Recommendations Accelerated PavementTesting & Equipment

2. UC Pavement Research Centre UCPRC HVS with climate UCPRC Wheel loading UCPRC Test sec tion with UCPRC Indoor testing control * test section * HVS in the background * facility at Davis * *Photos: MG Henderson

3. R&D Programs UCPRC areas of research Pavement Preservation Quiet Pavements Pavement Construction Practices Mechanistic-Empirical Design Long-life Pavements Pavement Recycling and Sustainability Development of a Caltrans Pavement Management System Pavement Smoothness

4. Turner-Fairbank Highway Research Centre www.aapa.asn.au

5. R&D Programs TFHRC strategies Durable Infrastructure Systems Performance-Based Specifications Comprehensive and Integrated Infrastructure Asset Management Long-Term Infrastructure Performance Environmentally Sensitive Highway Infrastructure Accelerated Highway Construction

6. NCAT - National Centre for Asphalt Technology

7. National Centre for Asphalt Technology

8. R&D Programs NCAT focus areas for research are: Sustainable pavements M-E pavement design calibration Perpetual pavement design Porous friction courses mixes Lab tests for predicting performance Pavement friction Pavement reflectivity

9. NCAT current research objectives Performance Graded Binder validation Perpetual pavement concepts M-E design validation/ calibration Durability of coarse gravel mix Performance of various Asphalt gradings including Superpave Polymer modified binders Warm Mix additives in mixes Types of aggregates used in SMA Drainable mixes RAP asphalts

10. Tour of Laboratories University of California Pavement Research Center (UCPRC) Federal Highway Administration Turner-Fairbank Highway Research Centre (FHWA) National Center for Asphalt Technology (NCAT)

11. Simple Shear Tester

12. Gyratory Compactor

13. Rolling Wheel Compaction

14. 4 Point Bending Fatigue Test

15. Hamburg Wheel Track Test

16. Asphalt Pavement Analyser Rut test on cores

17. AMPT - Asphalt Mix Performance Tester

18. AMPT AMPT measures Dynamic modulus Flow number Flow time 1. Place sample in chamber 2. Mount strain transducers 3. Commence testing

19. Device to test bond between layers Layer bond shear strength test

20. Observations – APT&E www.aapa.asn.au APT demonstrated as a valuable tool to obtain research results within short time frames. Means to rapidly calibrate design models accommodating new concepts (FEL) and varying material types allowing early adoption of cost effective solutions.

21. Observations – APT&E • Facility cost is high to establish & operate but results provide major financial benefits in selection and design of expensive pavements • Success achieved through collaborative research effort between industry, test equipment & materials suppliers, road authorities, consultants and academia. Funds drawn from authorities and product developers.

22. Recommendations – APT&E • Stronger relationship be established between Australian APT and United States APT groups. • Materials should be tested by NCAT for Accelerated Pavement Testing to calibrate USA performance data to local pavements and environmental effects. • Expand APT in AU to understand performance of lighter pavement structures for higher performance & higher mass vehicles.

23. Recommendations – APT&E • Promote greater participation by industry by providing local benefits from APT in advanced materials development opportunities. • Embark on a program to link the field and laboratory engineering related performance data through the use of up-to-date test equipment.