Sustainable Asset Management An industry perspective by AAPA John Lambert AAPA CEO www.aapa.asn.au

CONTENTS Sustainability principles Funding sustainability Including all the costs Measuring and managing Scarcity Improving performance and sustainability Summary www.aapa.asn.au

Sustainability principles

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

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

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

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

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

Funding Sustainability

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

Funding is a sustainability requirement

Mobility – moving vehicles on roads compared to water in pipes

Sustainability and road funding levels

C Including all the costs

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

Measuring and managing

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 2000 - 2001

1 m3 of asphalt is approximately 2.45 tonnes. Therefore the embodied energy in 1 m3 of asphalt produces approximately 0.025 CO2-eq/m3 or about 10% of the emissions from the same quantity of concrete

E Scarcity

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

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

Improving performance and sustainability

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

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

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

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

Modified binders for temperature risk Usage Name Softening Point Range ⁰C Observation Seal grade bitumen CL170 46 - 52 Lab results Seal grade PMB low stress S0.3B 48 - 56 2 to 4 ⁰C improvement Seal grade PMB high stress S4.5S 82 - 100 36 to 48 ⁰C improvement Seal grade Crumb Rubber S15RF 55 - 65 9 to 13 ⁰C improvement Asphalt grade bitumen CL320 48 - 54 Asphalt grade PMB low stress A0.6S 65 - 95 17 to 41 ⁰C improvement Asphalt grade PMB high stress A5S 82 - 105 34 to 51 ⁰C improvement

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

G Summary

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