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DEVELOPMENT OF THE TREATMENT TECHNIQUES IN EUROPE

DEVELOPMENT OF THE TREATMENT TECHNIQUES IN EUROPE. D.PUIATTI Lhoist Group, France Daniel.puiatti@lhoist.com. Synopsis. Soil Treatment Pavement Recycling Materials Recycling. Nb of Units. European Status of Soil Treatment. About 600 in situ treatment units

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DEVELOPMENT OF THE TREATMENT TECHNIQUES IN EUROPE

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  1. DEVELOPMENT OF THE TREATMENT TECHNIQUESIN EUROPE D.PUIATTILhoist Group, France Daniel.puiatti@lhoist.com

  2. Synopsis • Soil Treatment • Pavement Recycling • Materials Recycling

  3. Nb of Units European Status of Soil Treatment • About 600 in situ treatment units • Roads, Motorways, Railways, Airports, harbors… • Housing, Commercial & Industrial Platforms.

  4. European situation as of today • Continuous development in different fields of application • From private to public investments • Different processes according to countries and applications • Mostly in place treatment, some in plant treatment (capping) • Mostly pulverized binders, beginning of slurry binders

  5. Cement or Hydraulic Road Binder (HRB) Lime + Cement or HRB (Double treatment) Lime French Case • Earthmoving : 40 to 50 Mm³/year of soils • Hydraulically bond soils (3,5 to 6% of cement/HRB ~ 900kt/a):6 to 8 Mm³/year • Lime treated soils (1,5 to 2 % of lime by weight ~ 400kt/a): 15 to 25 Mm³/year • Total treated soils : More than 1/3 of soils moved in France

  6. American Pulvimixers Agriculture Spreaders Improved American Mixers French Mixers & Spreaders Plough Mixers Central plants HRB HighPerformance Mixers Recycling units Reduced Dust Binders Technology 1985 1975 1995 1965 Codification New Earthworks Lime treatment Pavement Earthworks Treatment Applications Recycling Pavement Capping Layer Embankment The French development process

  7. 2005 1966 If issues are still the same …

  8. 2005 1966 … Technology has changed ! (Spreading)

  9. 1966 2005 … Technology has changed ! (Mixing)

  10. … The binders have changed • Hydraulic Road Binders (HRB) • Reduced Dust Binders

  11. Synopsis • Soil Treatment • Pavement Recycling • Materials Recycling

  12. Definition (PIARC) • « The in situ Pavement Recycling consist in a modification of an existing old pavement into a homogeneous new pavement able to resist to traffic »

  13. Progressive development in Europe • Some countries like : • Spain • Germany • France • The Netherlands

  14. Synopsis • Soil Treatment • Pavement Recycling • Materials Recycling

  15. Definition By-Products Construction Activities Modification by treatment

  16. Construction By-Products Management • Pressure from European & local regulations since mid 90’s • To stop the wild dumping of by-products • To reduce the production of by-products • To recycle and re-use materials • By • Developing local recycling networks • Getting the commitment of public investors

  17. Since 2002 • Recycling process using treatment : • Sorting out • Crushing • Treatment of fine materials with a binder • Use by the contractor or put on the market(trench back-fill, embankments, pavements) • New recycling technology • Mobile units : trenches (~200t/j) • Semi-mobileunits : (~400 à 600t/j) • Central plants : for local needs (> 800t/j)

  18. Mobile units

  19. Semi-mobile unit

  20. Central Plants

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