Case Studies

Recycled Roads to Zero Waste – Business Case 2014

Description: A high percentage of waste starts with households and Councils collect it. Quarry resources are finite and running out in many areas. This presentation contains the business case for the project.

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Approved for use in the City of Casey: Alex Fraser Size 20mm Class 2

Description: Letters from participating councils, confirming their position on the use of recycled materials.

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A business case for councils to use local recycled materials as a supplement in pavement construction

Description: The business case for councils to use local recycled materials as a supplement in pavement construction presents the competitiveness of local recycled materials as a supplement to traditional quarry materials based on the dimensions of quality, price and availability. Recommendations for councils to procure local recycled materials for pavement construction are also provided.

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Anderson Creek Road Recycled Glass Pathway Project

Testimonial from: Manningham City Council

case_study_anderson_creek_rd_recycled_glass_pathway_project“Manningham City Council was approached by the MAV to undertake a trial of the use of recycled materials in footpath construction.  The trial involved the use of crushed glass as an additive to Class 2 crushed rock.  This blended mix was used as basecourse for an off road shared bicycle and pedestrian path on Andersons Creek Road in Doncaster East.

Two blends of the material were trialed, being a 15% glass mix and a 30% glass mix with a conventional pavement composition test section also constructed.  The material was purchased directly from the supplier by Manningham City Council.  The material required minimal changes to the standard installation methodology for Class 2 crushed rock footpath basecourse, the main stipulation being that it was only to be handled when wet.  The material was delivered to site at the optimum moisture content and was laid without any issues.  The 30% mix took a greater time to achieve the desired compaction but the difference was marginal.

Compaction test results indicated that the specification requirements for the basecourse crushed rock were met.  The compacted material bonded well with the asphalt surface.  The works were undertaken approximately 12 months ago and the test sections of footpath continue to perform well.  The use of crushed glass in the basecourse has been deemed to be a success and Council intends to amend it’s footpath construction specifications to permit use of this material for future footpath works.”  Paul Best, Engineering Operations, Manningham Council.

Field Trials of Recycled Crushed Glass in Footpaths and Shared Paths Report

Description: Recycled crushed concrete, brick and glass are commonly obtained from household recycling, construction and demolition (C&D) activities. Currently in Victoria, approximately 1.4 million tonnes of crushed brick and 250,000 tonnes of glass are stockpiled annually in Victoria and these stockpiles are growing. The reuse of the recycled C&D waste materials such as crushed brick and glass would greatly reduce the demand for landfill sites and for high quality quarry materials by re-using what would be normally regarded as a waste material.

Author: Swinburne University of Technology (SUT), Dr Binh Vuong & Dr Arul Arulrajah

Date: August 2010

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Life Cycle Assessment of the Use of Solid Waste Materials in Highway Construction

Description: Sustainable consumption and production, leading to increased resource efficiency, is now high on the political agenda. Recycling and reuse of materials is now far more commonplace, not least in resource intensive activities such as the construction of infrastructure including highways. A vast range of secondary and recycled materials now commonly replace virgin aggregates; including both those which originate from deconstructed highways and other demolition projects, to those which arise in other waste streams quite unrelated to highways. The range of materials incorporated includes recycled asphalt planings, recycled concrete, ashes, slags, foundry sand, glass, plastic and rubber.

Feasibility studies concerning the potential for the use of these materials are plentiful and some studies exist which have considered the environmental credentials of such practices. There are still opportunities available to improve the sustainability of such systems, especially where there are several different options available for recycling a given waste material. This particular study summarises work conducted to date and investigates the environmental performance of recycling systems which use glass to replace aggregate in bitumen bound surface layers, comparing it to other recycling options for glass including closed-loop recycling to new containers.

By: M Wayman, B Cordell & E Houghton

Date: July 2009

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