3 8 15 May 2012 Heath Curnow CEO STABILLIME GROUP Vice President AustStab Topics covered over the next 10 min Road Recycling for Sustainability Advantages amp Application of InSitu Stabilisation to Improve Engineering Properties ID: 376329
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Slide1
IPWEA Meeting3, 8 15 May 2012
Heath CurnowCEO: STABIL-LIME GROUPVice President: AustStabSlide2
Topics covered over the next 10 min
Road Recycling for SustainabilityAdvantages & Application of In-Situ Stabilisation to Improve Engineering Properties.
Consider Whole of Life Costs to Determine whether or not to Stabilise
The
role of the association and what we can do to help you day to daySlide3
Pavement Recycling by In Situ Stabilisation
Process of improving pavement material properties by in situ mixing in accordance with a mix design.According to Sustainability Victoria & the Institute of Engineers, Sustainability refers to:Economic
Environmental
SocialSlide4
Sustainable Advantages of Pavement Recycling
Economic Sustainability:
Cost effective to treat saturated/soft materials rather than the cost to excavate and replace.
Design & Construct efficiency by increasing
the strength of the lower pavement layers and
saving on the thickness of
more
expensive upper pavement layers
.Slide5
Environmental Sustainability: Recycling reduces dependence on limited quarry resources by reusing worn out pavement materials or improving subgrade properties
.Stabilising unsealed roads increases durability and reduces re-grading & re-sheeting frequency. Slide6
Social Sustainability:Construction expediency & reducing traffic movements significantly reduces disruption to local traffic during construction.Slide7
Tailor mix design to improve specific material properties:
Plasticity (PI) & Permeability
Strength & Moisture Content
.
Improve material grading by pulverising during mixing of Binders.
.
Correct shape & moisture condition to ensure OMC at compaction.Slide8
Stabilisation can be used on new works, rehabilitation works and on unsealed pavementsSlide9
Savings can be made in the sub grade, sub base or base material using materials already on site
DOTARS study on unsealed roads, completed in 2010 showed:
Stabilised Base
Granular
overlay
Initial cost/km
$17000
$13000
Life before replacement
12 years
8 years
Resultant cost pa
$1,400
$1,600
Minor maintenance schedule
Once per year
2 – 3 times per year
Cost per maintenance/km
$1,000
$1,000
Cost per annum
$1,000
$2,500
Total Cost
$2,400
$4,100Slide10
Whole of Life Costs
Asphalt patch work quilt is an expensive surface band aid typically with a max. 2 year life.
Pavement continues to exponentially deteriorate as do costs to rehabilitate.
Consider sooner option to join patches & recycle with 30 year design life & minimal maintenance.Slide11
AustStab is able to provide you with information and tools
Members registerPublications- The guide
Work Tips
Published articlesInformation on
design and specifications TrainingUpcoming TrainingCPEE and AustStab CourseMelbourne
October 2012
Frequently asked
Questions
Contractor RegisterSlide12
AustStab in Victoria is wanting to engage with local government, state government, contractors and consultants – You!