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PAVEMENT

PAVEMENT. Work programme Denis François (LCPC) Cliff Nicholls (TRL) Erik Nielsen (DRI) Francisco Sinis (CEDEX) & Jean-Michel PIAU (LCPC). PLAN OF PRESENTATION. I ntroduction General objective of SAMARIS Pavement project Context Overview of the technical programme

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PAVEMENT

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  1. PAVEMENT Work programme Denis François (LCPC) Cliff Nicholls (TRL) Erik Nielsen (DRI) Francisco Sinis (CEDEX) & Jean-Michel PIAU (LCPC) Reference Group Meeting

  2. PLAN OF PRESENTATION • Introduction • General objective of SAMARIS Pavement project • Context • Overview of the technical programme • Review of technical WP3 to WP6 • Objective • Tasks • Deliverables • (Q&A period) • Conclusion • Budget • Benefits of end-users Reference Group Meeting

  3. Pavement - IntroductionGENERAL OBJECTIVE • Sustainable (and Advanced) MAterials for Road InfraStructure • Objective • Anticipate the greater use of recycled materials in pavement construction& maintenance within the frame of Sustainable Development Policy • Prepare the next generation of CEN standards • Special attention given to the situation of Central European countries Reference Group Meeting

  4. Pavement - IntroductionGENERAL OBJECTIVE • Clarification of recycling policy • numerous materials and situations • sourcesof materials : road (in place/storage), deconstruction, demolition, waste (industrial) materials,… • destination : subgrade, subbase, wearingcourse, pavement shoulders…, low/high traffic roads • process : cold/warm, fixed/mobile plant, bitumen/hydraulic binders… • Various experiences from the different countries Reference Group Meeting

  5. Pavement - IntroductionCONTEXT • 1) Sustainable development policy (SDP) cares for : • Technical aspects • Environmental and health aspects • Economical aspects • Social aspects Reference Group Meeting

  6. Pavement – IntroductionCONTEXT • Adequacy between SDP and the re-use of materials in Pavement construction & maintenance (PC&M) • Favourable conjonctural aspects • PC&M needs high quantity of materials • no need for “very highly” performant materials • Benefits of re-use • spare of natural materials • limitation of waste materials and waste disposal • possibility of economical savings Reference Group Meeting

  7. Pavement - IntroductionCONTEXT • But SDP also requires that recycling is: • no detrimental to nature, especially to ground water (environmental aspects at long run) • no detrimental to human being, especially to workers during construction/maintenance phase (safety aspects) • sufficiently performant from a technical point of view (durability of infrastructure, properties of wearing course - skid resistance,…)  Peculiar importance given to environmental, safety and mechanical aspects Reference Group Meeting

  8. Pavement - IntroductionCONTEXT • 2) On-going work for European standardisation • Mandate 124,…  Important place given in SAMARIS to pre-standardisation work (first or second generation of standards) • 3) Several previous international research projects in the same area • ALT-MAT,Courage, Polmit, COST337,…  Important place given to litterature review Reference Group Meeting

  9. Pavement - IntroductionOVERVIEW OF THE TECHNICAL PROGRAMME • Assess the environmental risks linked to infrastructures, built or reinforced with alternative materials ; assess the performance of structures (durability) (WP3, LCPC) • 2) Prepare the work for the introduction of environmentaland safety concerns in specifications of alternative materials, both during the pavement construction/deconstruction phase or during the service life (detection of hazardous components); take into account the specific scenario of fires in tunnels • (WP4, TRL) Reference Group Meeting

  10. Pavement - IntroductionOVERVIEW OF THE TECHNICAL PROGRAMME • 3) Promote performance-based specifications, available « whatever » the materials, instead of formulation based on recipe (WP5, CEDEX) • restricted in SAMARIS to the case of specification against permanent deformation • 4) Clarify the international context of re-cycling ; provide up-dated information and recommendations about the techniques and applications of recycling • (WP6, DRI) Reference Group Meeting

  11. Pavement - IntroductionOVERVIEW OF THE TECHNICAL PROGRAMME • WP3 : Assessment of alternative materials (LCPC) • WP4 : Safety and environmental concerns in material specifications (TRL) • WP5 : Performance-based spec. (CEDEX) • WP6 : Techniques for recycling (DRI)  • WP2 for development, review of the programme, interrelation between WPs • 17 partners Reference Group Meeting

  12. Pavement - IntroductionOVERVIEW OF THE TECHNICAL PROGRAMME • General features of the research programme • Interrelation between WPs • Litterature review • Use of questionnaires (some to the reference group members) • Use of models • Development of methodological tools • Sharing & crossing of the experience from the different countries • Clustering with FORMAT • technico-economical optimisation of recycling techniques • Quality assurance frame: internal/external review of production, reference group,... Reference Group Meeting

  13. Pavement - IntroductionOVERVIEW OF THE TECHNICAL PROGRAMME • Main expected deliverables • General methodology for the assessment of functional, safety and environmental aspects • Protocols to investigate hazardous components, when re-using pavement materials • Environmental annex to CEN products standards • Mechanical models and test methods for performance-based specifications • Technical guides and recommendations for a proper-use of recycling techniques in road construction Reference Group Meeting

  14. WP3 : Assessment for alternative materials Denis François -LCPC Main objective • Develop an approach for the assessment of eco-compatibility and durability of alternative materials in road construction • Task 3.1 : Review of regulation about recycling, existing in different countries (Europe, USA,…) • Task 3.2 : Development of a methodology for the assessment of alternative materials, based on use scenarios Reference Group Meeting

  15. Road soil Ecosystème Water table Synthesis: use scenarios Diagnosis Local environment conditions Material characteristics Road structure characteristics Constructive arrangements(adjustment var) Soil role Material mineralogy and chemistry Hydrodynamics of materials Ageing Complementary approaches Material geotechnics

  16. clino-pyroxène alliage Ph’D subject (M. Bouvet) : Subgrade parameters having a specific role in the transport of polluants, issued from waste materials used in pavement construction plagio-clase verre Examples

  17. WP3 : Assessment for alternative materials MATERIALS TO BE CONTEMPLATED • MSWI (Municipal solid waste incinerator) • bottom ash, coal fly ash • crushed concrete (from building and road demolition) • blast oxygen furnace slag, electric arc furnace slag, air cooled blast furnace slag, granulated (vitrified) blast furnace slag • decontaminated soils. Reference Group Meeting

  18. WP3 : Assessment for alternative materials DELIVERABLES • Report on existing specific national regulations applied to material recycling. (December 2003) • Report on the critical analysis of European texts (March 2004) • Influent factors and their range of variation in road applications (March 2004) Reference Group Meeting

  19. WP4 : Safety and Environmental Concerns in Material SpecificationsCliff Nichols -TRL • Task 4.1 : Detection of hazardous components into materials before their re-use • Task 4.2 : Reaction of pavement materials to fires (ex: asphalt materials & tunnels) • Task 4.3 : Environmental annexes to CEN standard products Reference Group Meeting

  20. WP4 : Safety and Environmental Concerns in Material Specifications Task 4.1 : Detection of hazardous components into materials before their re-use • Materials creating either: • hazardous fines, when pulverised • hazardous fumes, when heated (mixing) • near or exceed flash point, during heating • risks of leaching, when in place (cf. WP3) • Ex: tar, polymer in modified binders, abestos fibres,… • Identification of a set of detection tests, candidate to standardisation • Real implication on health, out of scope Reference Group Meeting

  21. WP4 : Safety and Environmental Concerns in Material Specifications Task 4.2 : Reaction of pavement materials to fires • Objective : clarification of the need to investigate the reaction to fire of pavement materials ; define the appropriate testing procedures (mandate 124) • EU demand following major incidents in tunnels • Work in SAMARIS on traditionnal asphalt materials (highly porous or not, surface dressing, slurry surfacing,…) • 2 phases, with milestone • survey among authorities + litterature review • If knowledge gaps identified, define means + development Reference Group Meeting

  22. WP4 : Safety and Environmental Concerns in Material Specifications Task 4.3 : Environmental annexes to CEN standard products • Objective : prepare an environmental annex to CEN standard products • Strongly interrelated with WP3 • Make pilot environmental studies on various type of materials Reference Group Meeting

  23. WP4 : Safety and Environmental Concerns in Material Specifications DELIVERABLES • Task 4.1 • Report on existing test methods for the detection of hazardous components (December 2003) • Report on the test methods for the detection of hazardous components (August 2005) • Task 4.2 • Report on the survey on road authorities positions with regards to reaction of pavement materials to fire (Feb.2004) • Report on testing procedure for reaction to fire of pavement materials (June 2005) • Task 4.3 • Report on the environmental annex to road product standards (September 2005) Reference Group Meeting

  24. WP5 : Performance based SpecificationsErik Nielsen -DRI • Main objective • Material design : evolve from a recipe approach to a performance based approach • Pre-standardisation work • Feasibility + methodology, rather than exhaustivity • Work mostly on classical pavement materials • Permanent deformation of unbound granular materials and asphalt materials Reference Group Meeting

  25. WP5 : Performance based SpecificationsTASKS • Task 5.2 : Permanent deformation of unbound materials : modelling and validation • Task 5.3 : Rutting of bituminous pavements : modelling and validation   • Task 5.1 : Calibration and validation of material and structural models from full scale data • Constitution of a database of well documented full scale testing (field or ALT) Reference Group Meeting

  26. WP5 : Performance based SpecificationsGENERAL FEATURES • Distinction beetween : • Routine models • Advanced models • Research models (not fully addressed in SAMARIS) Reference Group Meeting

  27. WP5 : Performance based SpecificationsDELIVERABLES • Data base and report on reference full scale tests (April 2004) • Report on models for prediction of permanent deformation of unbound granular materials in flexible pavement (April 2004) • Report on models for prediction of rutting in bituminous surface layers (April 2004) • Calibration and validation report for modelling of permanent deformation of unbound and bituminous materials in flexible pavements and recommendations for the definition of performance-based specifications (September 2005) Reference Group Meeting

  28. WP6 : Techniques for RecyclingFrancisco Sinis – CEDEX • Main objective : • provide up-dated information and recommendations about the techniques and applications of recycling • ·Task 6.1: To elaborate a technical guide on recycling techniques • ·Task 6.2: To review the situation on recycling in Central European countries. Reference Group Meeting

  29. WP6 : Techniques for RecyclingMAIN FEATURES • Strongly interconnected with WP3 • Materials of interest : • Municipal Solid Waste Incinerator • Steel Slag,Blast Furnace Slag, Non-Ferrous slag • Coal Fly Ash, Coal Bottom Ash • Mining Waste Rock • Blast Furnace Slag • Ground Granulated • Scrap Tyres • Waste Glass • Foundry Sand Reference Group Meeting

  30. WP6 : Techniques for RecyclingDELIVERABLES • Report on literature review on recycling of by-products in road construction in Europe (Dec. 2003) • Report recommendations for mixing plants for recycling works (June 2004) • Report on the situation on recycling in Central European countries (August 2004) • Technical guide on techniques of recycling (September 2005) Reference Group Meeting

  31. PavementCONCLUSION • Budget • 193 man-months, 1 631 000 Euros • Expected benefits for road owners, road users, research institutes • Co-ordination of actions, implementation, no duplication of effort, association of CEE countries • Assessment of the eco-compatibility of materials to be re-used in road works • Less problems of pollution.Better use of by-products and preservation of natural resources • Increased safety at road work; less health problems with undetected hazardous components when recycling Reference Group Meeting

  32. PavementCONCLUSION • Expected benefits for road owners, road users, research institutes • Performance-based specification for functional properties of pavement materials for flexible pavements,bituminous surface layers • Possibility to assess in a common way different types of materials including secondary materials and by-products • Reduction in cost of pavement works by the use of a larger range of materials • Technical guide on recycling techniques Reference Group Meeting

  33. Further comments/questions : • Jean-michel.piau@lcpc.fr Reference Group Meeting

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