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Use of recycled demolition materials for footpaths and shared paths

Use of recycled demolition materials for footpaths and shared paths Geotechnical laboratory testing results. A/PROF ARUL ARULRAJAH – Swinburne University of Tech, Melbourne,Australia. Research Background. Swinburne research projects on Construction and Demolition (C&D) Materials.

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Use of recycled demolition materials for footpaths and shared paths

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  1. Use of recycled demolition materials for footpaths and shared paths Geotechnical laboratory testing results A/PROF ARUL ARULRAJAH – Swinburne University of Tech, Melbourne,Australia

  2. Research Background

  3. Swinburne research projects on Construction and Demolition (C&D) Materials • Recycled demolition materials in footpaths and shared paths, Funded by Municipal Association of Victoria, June 2009-December 2009. • Crushed brick in pavement sub-base applications, • Funded by Sustainability Victoria, August 2007-May 2008. • Laboratory testing of crushed glass in pavement sub-base applications, • Funded by Sustainability Victoria, June 2009-May 2010. • Field testing of crushed glass in pavement sub-base applications. • Funded by Recycling Industries (Alex Fraser); Visy Recycling; National Packaging Covenant, November 2009 to June 2011.

  4. Construction and Demolition (C&D) Materials • 32 million tonnes of solid waste is generated in Australia. Approximately 14 million tonnes comprises construction and demolition (C&D) waste, of which about 50% is recycled. • Recycled concrete, brick and glass are commonly obtained from household recycling, construction and demolition (C&D) activities. • Currently in Victoria, 1.4 million tonnes of crushed brick and 250,000 tonnes of crushed glass are stockpiled annually and these stockpiles are growing.

  5. Recycled Demolition Materials • Traditional footpath materials are becoming scarce in some regions. • In some cases, the use of these materials is unsustainable from both an environmental and cost perspective. • This has led to this project to investigate the usage of recycled crushed glass, crushed brick in blends with crushed rock and crushed concrete in footpath sub-base applications.

  6. Recycled Demolition Materials • These project seeks to reduce the demand for virgin materials and reduce the quantity of material deposited in landfill. • These projects have investigated the usage of • recycled crushed brick/crushed glass in blends up to: • 50% with crushed rock and crushed concrete in footpath base and sub-base applications. • 30% with crushed rock and crushed concrete in pavement sub-base applications

  7. PREVIOUS Specifications FOR FOOTPATH AND SHARED PATHS Based on VicRoads Specifications(section 812 and 820)

  8. Asphalt Wearing Surface 25 mm 100-250 mm Pavement Base (Class 1 & 2) Pavement Sub-base (Class 3) 150-300 mm Schematic diagram of a typical low volume road pavement cross-section

  9. VicRoads 2009 specifications (Section 820) - Allowable foreign material content (%)

  10. VicRoads 2009 specifications (Section 820)- recycled crushed concrete pavement subbase

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