GREENSPEC SPECIFICATION AND THE USE OF RECYCLED GLASS IN ROAD PAVEMENTS Stuart Small, Projects & Contracts Engineer Great Lakes Council

Transcription

1 GREENSPEC SPECIFICATION AND THE USE OF RECYCLED GLASS IN ROAD PAVEMENTS Stuart Small, Projects & Contracts Engineer Great Lakes Council

2 Greenspec Phase 1 Phase 1 Draft August 2001 Inner Sydney Waste Board, IPWEA NSW, and Waste Management Australia (WMAA) No industry wide spec existed Encourages utilisation of construction waste (concrete & bricks) Backed by CSIRO research Supports trials to further develop spec

3 Greenspec Phase 2 Phase 2 Full Release June 2003 Resource NSW, IPWEA NSW, and WMAA Supports NSW Waste Avoidance & Resource Recovery Strategy 2003 (target 76% recovery by 2014 in C&D sector, from 64% - note 2008/9 73% achieved) Primarily focused on concrete, brick, and asphalt Adjusted material specifications including R1 category (material to be less plastic)

4 Greenspec Phase 3 Phase 3 Full Update April 2004 DECCW (Now OEH) & IPWEA NSW Recognises recycling of materials other than C&D waste glass, flyash, virgin material Caps traffic volumes to 4x10 6 ESA RTA 3051 (granular base & subbase pavements) Legal requirements added Guidelines included for placement More detailed case studies added Strength testing of drainage materials

5 Greenspec Greenspec Version Version 1 Version 2 Version 3 Concrete 100% 100% 100% Asphalt 5% 40% 40% Brick, tiles, masonry 30% 30% 30%* Glass 10% Flyash 10% Metal/glass/ceramics Contaminants 2% 5% 5% Plaster/clay lumps/etc 0.2% 0.2% Rubber, plastic, 0.2% bitumen, etc. 0.1% 0.2% Changes in Greenspec allowances for recycled materials and contaminants for Class R2 materials * - For V3 R1 material brick.. Increased from 3 to 20%

6 The Legal Environment NSW POEO Act Resource Recovery heavily controlled Exemptions: General Exemptions Cover commonly recovered materials Application for approval not required Conditions must be met Specific Exemptions Materials not covered by General Exemptions

7 General Exemptions DECCW Resource Recovery General Exemptions for construction material Recovered aggregate 13th September 2010 Cement fibre board exemption 20th June 2008 Recovered glass sand 14th June 2010 Recovered railway ballast 20th June 2008 Coal ash 14th June 2011 Tyres 20 June 2008 Slags 24th December 2010 & 14th June 2011 Special Exemptions

8 NSW Waste Generation 7,000,000 T 6,000,000 T 5,000,000 T 4,000,000 T 3,000,000 T 2,000,000 T 1,000,000 T 0 T Recycled Landfill 16,261,500 Tonnes Waste Generated 2008/9

9 Typical Household Bin Total Plastic, Total 10.00% Total nonferrous, 0.60% hazardous, 1.90% Organic other, 4.70% Total earthbased, 0.04% Total other & WEEE, 0.16% Total Glass, 4.10% Total Paper, 19.70% Organic Compostable (food), 40.20% Organic Compostable (non-food), 11.10% Total Steel, 2.40%

10 Glass Statistics Recycling rate has increased from 26% in 2003 to 47% in 2010 for glass packaging. 40% of glass cullet is rejected from material recovery facilities as unsuitable for primary processing Container breakages Contamination (e.g. ceramics) Colour separation 133,851 T recycled into new and 109,047 T recycled into secondary in NSW for 2009/10

11 Glass Recycling End-products for glass in (tonnes) 48,981 1,506 1, ,690 Glass containers Sheet glass Laminated glass Glass fines Source: DECCW NSW Resource Recovery Industries Survey

12 Why Recycle Glass? Financial Disposal to landfill is costly, and will continue to increase Transport costs are increasing Quarried materials are becoming harder to source Waste disposal becoming more difficult Existing landfills are reaching end of their lives New landfills are difficult to establish Larger volumes of demolition material being generated Recycling is maturing as an option The community expects Green outcomes and is participating Recycling technology has matured Performance of recycled materials is better understood

13 Demonstration Projects Australian Food & Grocery Council Packaging Stewardship Forum Proactively helping through funding research (GHD Report) and demonstration projects in partnership with interested organisations NSW Waverly & Great Lakes 5 years of research & testing

14 Waverley Council Asphalt Blair Street, Bondi Beach June Tonnes RCG 3 x 100m 0%, 2.5%, and 5% RCG Benedict supplied Issues: Batching small quantity asphalt

15 Waverley Council Concrete O Brian Street Bondi Beach March 2011, West bound 35MPa, 100m long, 3m wide, 225mm, saw cuts 4.2m lengths 0% (control), 45% glass sand, 15% glass powder cement Orig ,000 vpd (incl 130 Buses) RTA R83 15T RCG

16 Waverley Council Concrete cont. Issues Encountered Prelim lab tests mix design changed Workability concerns mix design critical no water added on-site East/West bound joints don t align extra cracking? Difficulty sourcing suitably graded glass to match mix design Contractors reluctance due to the unknown delays in finding Batching no spare bins

17 Great Lakes Council Tuncurry Materials Recovery Facility Glass crushed locally under contract at Council landfill 4,500 T per annum 5mm minus product Heavily contaminated by volume but passes OEH by weight Additional processing washed 3mm minus product

18 Great Lakes Council Asphalt Tuloa Avenue Hawks Nest August 2011 AADT est 1200 Stabilised Nov 2010 (after 150mm DGB20), 250mm, 2.5% 70/30 slag/lime 40mm AC10-0% (control), 3.5% - Total 249 Tonne, 3.4T glass Boral design, tested in lab

19 Great Lakes Council Asphalt issues experienced 5mm minus too contaminated Washed & screened to 3mm minus Sand & glass batched prior 3:1 (14% total) RTA requested change in % s to reflect spec changes, 0%, 1.5%, 2.5% 0%, 3.5%

20 Great Lakes Council Gravel (DGB20) Glen Ora Road, Nabiac Road is rural and will service a new regional landfill facility Upgrade from 5m to 11m wide 6.26km to be constructed Basecourse layer 150mm DGB20 with 1.5% 60/40 slag/lime Glass sections m long 10% glass, 15% glass Sept/Oct 2011 Holcim Quarries design & supply

21 Project Requirements Monitoring & Testing Rutting Stripping Skid Resistance Crack Mapping Strength Project reporting 6 monthly 5 years Promotion project processes & outcomes Local Government State Government Civil Construction Recycling Industry

22 Why Recycle Glass? Kerbside collection is successful 30% broken/contaminated Landfill $

23 Co-editor Mick Savage Manager Roads & Transport Directorate, IPWEA (NSW)