5 - Interview of a toll motorway manager. Final customer expectations.

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來自 École des Ponts ParisTech 的課程

Mastering bitumen for better roads and innovative applications

90 個評分

École des Ponts ParisTech

Mastering bitumen for better roads and innovative applications

90 個評分

During the four coming weeks, best experts in bitumen will bring you their knowledge and experience to build a strong understanding of today’s realities and new perspectives on the future of bitumen. Total is the European leader on bitumen markets. Innovation has always been the key to sustainability and durability in the products they develop. Their main objective here is to share technical knowledge and experience to insure bitumen are being used in the most effective and efficient ways for their different applications in road works. Ecole des Ponts, France oldest engineering school, remains very much in the present, as it has always been, in training engineers in order to meet the needs of our society and citizens in key areas such as transport housing and urban services, but also in fields like energy, environment, climate sciences, land-use planning and sustainable development. Nineteen world recognized experts on bitumen are contributing to this MOOC. The idea is to provide the broadest prism on this topic area with speakers coming from research, industry and end users.

從本節課中

Bitumen market, generalities, the manufacture of bitumen, transport, uses of bitumen, main developments and alternatives

Origins, history, definition, terminology | market per geographical areas, figures of consumption, main producers, capacities of production, ranking, main flows between areas | global development of motorised transport - cars, airplane - was one of the single most development of 20-21st centuries | global development of buidings, roofing and other applications of bitumen | difference between bitumen, cement and tar coal. Advantages and drawback of each | different ways of transport of bitumen and present the supply chain diagram and restrictions. ADR Regulation | sampling, handling and safety principles. Hazard from handling hot bitumen is thermal burns.

1- Bitumen: Origins, history, definition, terminology6:50

2 - Bitumen manufacturing process5:54

3 - Global bitumen market, main uses and development7:19

4 - Application in roads: global view7:43

5 - Interview of a toll motorway manager. Final customer expectations.5:41

6 - Industrial application: global view8:36

7 - Difference between bitumen, cement and coal tar6:33

8 - Transport of bitumen - ADR Regulation-8:12

9 - Sampling, handling and safety principles-4:26

與講師見面

Eric GOSSE
Vice Président
TOTAL MARKETING SERVICES
Armel de la BOURDONNAYE
Directeur
ECOLE DES PONTS PARISTECH
Sophie LIMBORG
Mission Head
TOTAL MARKETING SERVICES
Mike SOUTHERN
Director
Bituconsult LTD
Clémence QUEFFELEC
Assistant professor
CEISAM laboratory, University of Nantes, France
Gilles GAUTHIER
Technical and Product development manager
TOTAL BITUMEN
Olivier GAMET
Production Pilot
Supply department / TOTAL
John D'ANGELO
Chief Operating Officer
D’Angelo Consulting, LLC.
Gary SCHOFIELD
Technical Manager
Total Bitumen (UK)
Nicolas HAUTIERE
Project Director
IFSTTAR / COSYS Department
Frédéric ANDRZEJEWSKI
Expert bitumen industrial roofing activity
Jean Pascla PLANCHE
Vice President
Asphalt and Petroleum Technologies / Western Research Institute
Virginie MOUILLET
PhD, Senior Researcher, deputy head of chemical Unit
Regional Laboratory of Aix-en-Provence / Cerema Méditerranée
Hélène AZOULAY
Deputy Managing Director
PFC/Ecole des Ponts
Nadège VO VINH
Bitumen Shipping Manager
Supply International Bitumen / TOTAL MARKETING SERVICES
Cécile GIACOBI
Pavement expert
Vinci Autoroutes
Laurence LAPALU
Bitumen Group Manager
TOTAL MARKETING SERVICES - Research Division
Yves BROSSEAUD
senior researcher - road materials expert - materials and Structures Department
IFSTTAR - Nantes - France
Emmanuel CHAILLEUX
Research Director
IFSTTAR
Jean-François CORTE
Member of the Council of Environment and Sustainable Development
French Ministry of Environment, Energy and Sea

Hello, I’m Cecile Giacobi, I work for

the toll motorway company VINCI AUTOROUTES, and I’m in charge of pavement management.

- As an infrastructure manager,

what are your expectations concerning pavement over your network?

- Every day, over 2 million customers drive on our network of about 4,400 kilometers.

We manage to continuously improve customer service.

This has led to a policy setting out 32 commitments including offering

comfortable and safe pavement, whatever the climatic conditions.

This led to research high quality pavement products, adapted to all different

exposures:

low and high traffic, especially heavy traffic, cold and

hot climate, snow and frequent freezing.

- In order to reach these objectives, could you define the needs you have for

the materials?

- The desired characteristics are different for

each layers of the pavement structure.

The base courses, at the bottom of the pavement, constitute the most

important layers for the road structure and to obtain long life pavement.

For these layers, the need is to support the traffic loads, to transmit

the strain to the subgrade and to ensure a good bearing capacity with time.

Asphalt mixes should have high stiffness and resistance to fatigue.

- What are the needs for the surface course?

>> The surface layer, at the top of the pavement, is directly in contact with

the traffic.

The major objective is to provide high level of safety and comfort.

To provide good adhesion in wet conditions, skid resistance and

roughness are required.

We also need rutting resistance, especially for the pavement supporting

heavy traffic, like slow lanes, toll plaza or parking spaces.

Other characteristics can also be required as the case may be: good drainage,

noise reduction, cracking or stripping resistance.

In addition to, for all materials, we expect low water susceptibility.

And of course, long-term durability of these characteristics with traffic

exposure is required.

- What kind of methods do you implement to make sure the durability of

the required characteristics will be reached?

>> Every year, a condition survey is made to follow up the condition of

the pavement, especially for surface characteristics.

The results are input into a database and stored over time,

allowing us to do statistics studies and get a good feedback.

Based on this experience, we have defined technical requirements that we

detailed in the contract of works companies.

These requirements deal with all constituent materials, such as aggregates

or bitumen, but also with the performance for asphalt mixtures.

For example, we exclusively specify polymer modified bitumen for

surface courses, because we have noticed that this prevents stripping and cracking.

All these requirements should first be demonstrated with

laboratory validation tests.

Then, during the works, the quality and

conformity product is frequently checked by tests and inspections.

- Since a few decades, asphalt industry have offered the possibility to recycle

and reuse reclaimed asphalt,

does it change your requirements?

- In some cases for maintenance operations,

part of the pavement layers are milled off and replaced by new ones.

The reclaimed asphalt can be reused to make new asphalt.

From a sustainability and financial point of view,

this is very interesting because less new bitumen and aggregates are required.

When recycling asphalt, we have the same expectations for durability.

Reclaimed asphalt is considered as a constituent material, with quality

requirements and regular control.

Most of the asphalt spread out each year on VINCI AUTOROUTES network

contains reclaimed asphalt, with recycling rates up to 50%.

- Do you have requirements for works realisation?

- Reducing discomfort for our customers is a priority.

This means limiting interventions for maintenance works

while maintaining safety circulation conditions.

The maintenance policy we have been applying for

years has allowed long durability of the pavement materials and

to increase the renewal periodicity of the surface courses.

Otherwise, the works should be done in a short time period,

generally during the night for motorways with high traffic.

With asphalt materials such as very thin asphalt layer, we can easily and

quickly renovate surface characteristics.

Fast construction means shorter times for the workers on

the construction site and more safety for the workers and road users.

The key point to get the best policy in terms of pavement management

is durability.

This requires for the manager in charge with technical expertise to manage

every aspects of the project from design to realization stages.

Thank you for your attention.

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