1. Sustainable Asset Management An industry perspective by AAPA
John Lambert AAPA CEO

2. CONTENTS Sustainability principles Funding sustainability
Including all the costs
Measuring and managing
Scarcity
Improving performance and sustainability
Summary

3. Sustainability principles

4. SUSTAINABILITY PRINCIPLES
Sustainability means
Sustainability is good business practice
Innovation promotes sustainability
Drivers to enhance sustainability
Road Asset management principles

5. Sustainability means Must remain profitable
Must not run out of resources
Reduce waste and include reuse / recycling
Maintain acceptable social profile & impact
Protect the living environment
Improve efficiency – less consumption & emissions - innovate
1. Must remain profitable – Sustainability is good business practice

6. AAPA – QTMR Alliance Alliance established 2001
Acknowledges need for a sustainable business environment
We are partners in delivering superior pavements to the community

7. SUSTAINABILITY PRINCIPLES
Sustainability means
Sustainability is good business practice
Innovation promotes sustainability
Drivers to enhance sustainability
Road Asset management principles

8. Road Asset Management principles
“If you don’t measure it you can’t manage it”
Are we measuring enough of what’s important
Safety impacts – skid resistance, geometrics, events
Pavement – what’s there, how is it performing?
Local materials perform differently
Understand and test pavement strengths
Promote innovative greener / safer options

9. Funding Sustainability

10. FUNDING SUSTAINABILITY
Funding is a sustainability requirement
Mobility – moving vehicles on roads compared to water in pipes
Sustainability and road funding levels

11. Funding is a sustainability requirement

12. Mobility – moving vehicles on roads compared to water in pipes

13. Sustainability and road funding levels

14. C
Including all
the costs

15. Including all the costs
Overall costs of road transport – who carries the biggest load?
Smooth roads reduce fuel consumption
Users carry 95% of costs
>7% saving in costs

16. Measuring and managing

17. MEASURING & MANAGING Measuring “carbon”
Collaborative efforts of government & industry
Firm opportunities to use sustainable products
Energy used in asphalt manufacture
Road surfacing vs road construction – carbon generation
Carbon footprint calculators
RTA Greenhouse gas inventory

18. 1 m3 of asphalt is approximately 2.45 tonnes.
Therefore the embodied energy in 1 m3 of asphalt produces approximately CO2-eq/m3 or about 10% of the emissions from the same quantity of concrete

19. E
Scarcity

20. SCARCITY Scarcity considerations for materials
Peak oil myth or message?
Human Skills
DETAIL ON SOME PRODUCTS
Availability 15 to 20 years
Green Alternates Q1
Quarry products – road base
OK, limits in urban areas
No – cheapest option Q2
Quarry products – concrete stone Q3
Quarry products – asphalt stone Q4
Quarry products – surfacings
As above but high PAFV
Manufactured & slag C1
Cementitious – lime
Capacity limitations
Imports? Fly ash C2
Cementitious – cement
OK, some capacity limits
Imports C3
Cementitious - fly ash
Capacity & quality limits B1
Binders – bitumen
OK, high import capacity
Research level only, plant based, Tars – economic, not green B2
Binders – polymer modified
Production capacity limits
Crumb rubber - waste B3
Binders – bitumen emulsions
Production availability & limits No B4
Binders – cutback bitumen
OK, no known limits, JetA1
Emulsions F1
Fuels – diesel
OK, imports vs limits
LNG F2
Fuels – petrol
Ethanol & LPG F3
Fuels – kerosene F4
Fuels – LPG
Limited by distribution F5
Fuels – LNG
Limited by facilities F6
Fuels – fuel oil
OK, coal dust alternate
LNG, LPG

21. Scarcity considerations for skills
Construction’s boom & bust cycle
RIP - good demand smoothing & cost reducing
Are not locally sufficient in skills nor Australia
New “green skills” need to be grown

22. Improving performance and sustainability

23. IMPROVING PERFORMANCE AND SUSTAINABILITY
Performance improvements
Flexible pavements solutions available – now
Flexible pavement solutions – on the horizon

24. Performance improvements
Durability improvements
Greater functionality – skid resistance – better, thinner
Better pavement performance – thinner & stronger
Maintenance geared to requirements – cracks sealed, reseals done
Products matched to requirements – highly elastic binders for waterproofing
Waste reduction and recycling
Reducing energy consumption

25. Flexible pavements solutions available – now
Perpetual pavements
Recycled asphalt pavements (RAP)
Warm mix asphalt – process change on DGA
Emulsion based primes, primer seal & seals
Use of waste material – crumb rubber & fly ash
Bitumen stabilised materials – foamed asphalt
Protection of scarce road surfacing gravel
Modified binders for temperature risk
Social responsibility – lower odour binders

26. Use of waste material – crumb rubber
Motor car & truck tyres a land fill problem
Unhealthy in stockpiles – flies, mosquitoes . .
Shredded and powdered to provide valuable elastomeric modifier
Major social & environmental value
Limits to availability

27. Modified binders for temperature risk
Usage
Name
Softening Point Range ⁰C
Observation
Seal grade bitumen
CL170
Lab results
Seal grade PMB low stress
S0.3B
2 to 4 ⁰C improvement
Seal grade PMB high stress
S4.5S
36 to 48 ⁰C improvement
Seal grade Crumb Rubber
S15RF
9 to 13 ⁰C improvement
Asphalt grade bitumen
CL320
Asphalt grade PMB low stress
A0.6S
17 to 41 ⁰C improvement
Asphalt grade PMB high stress
A5S
34 to 51 ⁰C improvement

28. Flexible pavement solutions – on the horizon
Carbon Capture in bitumen production
Putting waste products to use
Bitumen substitutes
Energy from asphalt
Active asphalt

29. G
Summary

30. Need to measure, report and manage the sustainable needs of our road assets
Need to do it together Government & Industry