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Bruce Fenton Manager, Bituminous Surfacings Pavements Section

Use of Slag in Pavements by RTA Southern Region. Bruce Fenton Manager, Bituminous Surfacings Pavements Section. North Kiama Bypass . Bound Roadbase Blend of Air Cooled Blast Furnace Slag and Granulated Blast furnace Slag 2% binder added Binder is usually 85% GGBFS and 15% Lime

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Bruce Fenton Manager, Bituminous Surfacings Pavements Section

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  1. Use of Slag in Pavements by RTA Southern Region Bruce Fenton Manager, Bituminous Surfacings Pavements Section

  2. North Kiama Bypass Bound Roadbase • Blend of Air Cooled Blast Furnace Slag and Granulated Blast furnace Slag • 2% binder added • Binder is usually 85% GGBFS and 15% Lime • End product gives bound base conforming to RTA Specification 3052 • Usually 5 to 10 MPa UCS • 170,000 tonnes

  3. North Kiama Bypass

  4. North Kiama Bypass

  5. North Kiama Bypass

  6. North Kiama Bypass Slag Spalls • Used as drainage layer • 90,000 tonnes • Larger size • Air Cooled Blast Furnace Slag

  7. North Kiama Bypass Steel Furnace Slag Aggregates • Used in Dense Grade Asphalt • 70,000 tonnes • Chosen on basis of economics

  8. Northern Distributor Extension

  9. Northern Distributor Extension

  10. Northern Distributor Extension Pavement Quantities: • Heavily Bound Base – 60 000 m2 • Asphalt - 25 000 tonnes

  11. Asset Management Asphalt Aggregates: • Directly to RTA Bellambi • Purchase asphalt containing SFS Why: • Cost effective • Enhanced skid resistance • Improved stability • Effective use of industrial byproduct • Saves natural resources

  12. Asset Management

  13. Asset Management Recent Asphalt Works: • Gwynneville Interchange • Mt Ousley Road • Picton Road • F6 Freeway

  14. Asset Management Roadbase: • Used by Bomaderry Works Depot • Pavement Rehabilitation Projects • Less moisture sensitivity • Easier to recommence work after rain • Hot weather may require extra resources to maintain moisture content

  15. Asset Management Kangaroo Valley

  16. Asset Management Kangaroo Valley

  17. Princes HighwayWidening

  18. Princes HighwayWidening

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