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7/30/2019 DAY 1 - Speaker 11 - Andrew Silvestri
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Recycling.the re-use of sealed
roads
Andrew Silvestri, Account Manager ResourceCoRoads & Works Conference August 2012
7/30/2019 DAY 1 - Speaker 11 - Andrew Silvestri
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The South Australian Road Network
2
Roads facts and figures as at February 2007
Road categories
Road length (km)
Sealed Unsealed TotalNational highway 2,751 0 2,751
Urban arterial 920 0 920
Urban local 22 0 22
Rural arterial 8,565 48 8,613
Rural local 117 10,075 10,192
Totals 12,375 10,123 22,498
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INCOMING RAW MATERIALS ASPHALT
ResourceCo has developed state of the art processing facilities that are able tomanufacture a large range of quality, recycled products from various streams.
3
Clean Asphalt
Clean Asphalt (pictured right) consists of clean slab
asphalt and clean profilings. This material should be
contaminant free and contain only minimal amountsof road base, clay, soils, bricks and other foreign
matter.
This material is used to manufacture:
BITUMATE: A minus 20mm pavement material suitable for use in hard stand areas,
light duty car parks, fire and walking trails, road re-sheeting.
BITUMIX: A minus 20mm pavement material containing a nominated percentage of
high float emulsion and suitable for use as an alternative to some traditional asphalt/hot
mix applications.
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BITUMIX
BITUMIX is a nominal 20mm* graded,bitumen stabilised pavement materialmanufactured from BITUMATE with theaddition of a nominated dose rate of highfloat bitumen emulsion and supplementarybinders (1% Cement or Lime).
Source material is reclaimed asphalt removedfrom road pavements and car parks bystripping, cold planning or excavation.
Minimal amounts of base, sub-base or othermaterials may be included in the product.
Under no circumstance is asbestos orasbestos fibre incorporated into the product.
*10 & 14mm can be supplied upon request
4
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PRODUCT DEVELOPMENT
ResourceCo has invested significantly in the development ofBITUMIX. With the assistance of a grant from Zero Waste SA in2005, commissioned the Australian Road Research Board (ARRB)to undertake research.
5
Emulsion Dosage
ResourceCo has exclusive rights to the High Float Medium Set(HFMS) emulsion used in the manufacturing process. Dose ratesare typically in the range of 2 4% and are adjusted dependingon individual project needs and expected end usage.
Manufacture & Quality AssuranceBITMUX is manufactured through our state of the art pugmill
which incorporates the specialist emulsion dosing tank andequipment. Manufacture and supply is carried out under the strictquality control and production procedures in accordance with ourQuality Assurance System.
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CONSTRUCTION METHODBITUMIX is supplied wet-mixed to Optimum Moisture Content (OMC) and at thedesigned emulsion dose rate. It can be laid using standard asphalt paving methods orslightly modified practices used for normal quarry pavement material laying.
Minimum recommended pavement thickness is 50mm and proper compaction androlling will provide a hard, durable and smooth surface.
Benefits of using BITUMIX
The physical properties of BITUMIX allow it to be used in some applications wheretraditional asphalt would have been used. The addition of emulsion partiallyreactivates the residual bitumen binder that is retained during the manufacturingprocess. This combined total binder content greatly improves the mechanicalinterlocking and binding of each particle within the pavement.
Benefits include: Cheaper & cost effective alternative to some asphalt pavements
Can be laid without the use of an asphalt paving machine Reduced dust generation through traffic and normal wear and tear
Increase in life expectancy over non-bound pavements
Decreases maintenance cycles and associated costs
Re-uses reclaimed asphalt thereby reducing disposal to landfill
Can be laid cold, unlike normal asphalt mixes
Can be stored for several days before use
6
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APPLICATIONS Intermediate structural layer on thick
asphaltic concrete roads
Grain storage facilities
Wearing course for light traffic roads
Road shoulder construction and repair
Hard stand areas
Footpaths, fire tracks & walking trails
Light & medium duty car parks Driveways
7
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DEVELOPMENT OF COLDBITUMINOUS STABILISED
MATERIAL FROM RECLAIMED
PAVEMENTSBITUMIX 3
BITUMIX 3 - PRODUCT INFORMATION 8
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BITUMATE The Raw Feed Stock
Manufactured to a specification under QA system
BITUMIX 3 - PRODUCT INFORMATION 9
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Pugmill Manufacture
3% purpose made bitumen emulsion added with or without other binders
BITUMIX 3 - PRODUCT INFORMATION 10
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Mix Design - Compaction
PUGMILL MIXING COMPACTION
BITUMIX 3 - PRODUCT INFORMATION 11
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Mix design - compaction
BITUMIX 3 - PRODUCT INFORMATION 12
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Mix Design Resilient Modulus
BITUMIX 3 - PRODUCT INFORMATION 13
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Mix Design Rutting and Fatigue
BITUMIX 3 - PRODUCT INFORMATION 14
RUTTING
FATIGUE
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Sample Design Chart
BITUMIX 3 - PRODUCT INFORMATION 15
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Field Trials
Design 107 ESA
BITUMIX 3 - PRODUCT INFORMATION 16
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Costs Salisbury Park
PAVEMENT COST PER KM* DIFFERENCE
280mm BITUMATE 3 + 50mm AC $318,276 $0
270mm AC $378,126 $59,850
210 AC + 300 Granular $505,700 $187,424
BITUMIX 3 - PRODUCT INFORMATION 17
*Based on 500m section section trial at Salisbury Industrial Park
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Post Construction Evaluations
BITUMIX 3 - PRODUCT INFORMATION 18
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Other Applications
BITUMIX 3 - PRODUCT INFORMATION 19
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Other Applications
BITUMIX 3 - PRODUCT INFORMATION 20
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THANK YOU
BITUMIX 3 - PRODUCT INFORMATION 21