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World of Asphalt Pavements Feedback Sydney. Stephen Emery. Year 2000 'World of Asphalt Pavements' International Conference ‘The Flexible Path for the 21st Century’ February 20-24, 2000 — Sydney, Australia. Session 1: Australasian Overview of World Issues.
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World of Asphalt Pavements FeedbackSydney Stephen Emery
Year 2000 'World of Asphalt Pavements' International Conference ‘The Flexible Path for the 21st Century’ February 20-24, 2000 — Sydney, Australia
Session 1: Australasian Overview of World Issues • Innovation in Specifications and Contractual Arrangements - towards performance contracting, Australia
Session 2A: Design Concepts • Compass to design functional mixes, Netherlands • Design and vacuum creep on SMA, Australia
Session 2B: Innovative Surfaces 1 • Microsurfacing for heavily trafficked roads, Australia
Session 2C: Binders – Cold • Emulsion Priming of Road Bases, Australia
Session 3A: Performance Testing • Evaluation of field and laboratory fatigue properties of asphalt mixes, Australia
Session 3B: Aggregate/Binder Properties • Detecting and measuring segregation, USA
Session 3C: Binders – Hot • Specialty binders with improved fuel resistance, Australia
Session 4: Working Together: achieving better & safer outcomes • Keynote: Asphalt paving health effects research and development in the United States, Asphalt Institute, USA
Session 5: European Overview of World Issues • Use of innovative contracts in Sweden • LCI (Life Cycle Inventory) for asphalt in Green Procurement, Denmark
Session 6A: Innovative Surfaces 2 • Porous asphalt, NZ • Stone mastic asphalt: performance related material specification and experience, NZ
Session 6B: Application Innovation • MultiPaver - road maintenance, Australia • Reduced thickness bitumen rubber asphalt leads to cost effective pavement rehabilitation, USA
Session 6C: Environmental Aspects • Low noise asphalt concrete containing tyre rubber, France • Use of PG asphalt cement in recycled Hot Mix, USA/Canada
Session 7A: Binder Specification/Development • Australian Performance Based Binder Specifications • Multi purpose (multigrade) high performance binder, Mobil • Multibit–a new high performance (multigrade) bitumen, BP
Session 7B: Aggregate/Surface Texture • Evaluation of Superpave fine aggregate specification, USA • Aggregate suitability (stripping potential) for asphalt using methylene blue test, Australia • Hardness testing of pavement surfaces, NZ • Comparison of methods to measure road surface macrotexture, NZ
Session 7C: Costing/Statistical Control • Asphalt Mixture Proportioning: Mix Design and Production Compared, USA
Session 8: Performance Outcomes – more than just a good idea • Partnering in Road Construction, RSA • Simple Performance Test - AASHTO 2002 Design Guide, USA
Session 9: North American Overview of World Issues • Innovations in Materials and Mix Design • Developments in Specifications and Contract • Construction Equipment Developments, • HMA Work Force Issues for the 21st Century
Session 10: An International Potpourri • Australian Asphalt Mix Design Procedure, Australia • Experience with thin and ultra-thin HMA pavements in the United States, USA
Australian Asphalt Mix Design Procedure • Gyratory compaction is used in design • Flexural modulus, not resilient modulus • Creep slope is sensitive to air voids; not good assessment of rutting. Wheel-tracking test to be used in future. • Rutting controlled by • Air voids of 2.5% at refusal density (350 gyrations) • Wheel tracking results
Session 11: Southern African Overview of World Issues • Procurement protocol for modified binders • New hotmix design method for southern Africa • Development of a product certification system • Pavement performance evaluation as input to stochastic asset management
Session 12: Progress along the World Highway of the 21st Century • Technological developments under long term road maintenance, Australia • Implications of long term road maintenance contracts for the asphalt industry, South Africa
Closure • Opportunity to benchmark South Africa internationally • We saw that South African issues parallel world issues • we are living in a global society • Next WOAP conference • Jointly with CAPSA? • 2004? • Held in South Africa?