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| Learning objectives |
| The road industry is quite often rated as a low tech industry where the lowest price seems to be more important than the best quality. In this course a number of innovative developments will be presented with respect to material characterisation and selection, monitoring the pavement condition during construction, and developments in equipment and work processes to arrive to a high and homogeneous pavement quality. |
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| What's the course about |
All over the world one observes a dramatic increase in traffic both in terms of number of vehicles and their weight. Furthermore, one observes that the time slots available for maintaining our road networks become shorter and shorter and in many places maintenance works are only possible during the night. In order to reduce the maintenance needs and so the hinder to traffic, the call for perpetual pavements becomes louder and louder. Next to that there is an increasing tendency to award "design - construct" and "design - construct - maintain" contracts making the contractors much more responsible for the structures they build and forcing them to guarantee the good performance of the pavement over a significant period of time.
In order to limit the risks on disappointing performance and in order to be able to replace unsatisfactory sections during construction and not after the construction is completed, new quality assessment techniques need to be used that give relevant and accurate information on the asphalt mixtures as laid. It is beyond doubt that one cannot rely any longer on the traditional techniques. It is for this reason that in this course, ample attention is paid to advanced radar technology, measurement techniques that are coming from geophysics such as the measurement of background radiation and acoustic measurements. It is believed that these are techniques to be used in the near future for the evaluation of the quality of asphalt mixtures as laid and for monitoring pavement condition.
Good performing roads can only be built using good quality materials. Failure in bound materials is either failure in the mortar (cohesive failure) or failure in the aggregate-mortar interface or a combination of both mechanisms. Both aging of the mortar and moisture have a significant effect on the cohesive and adhesive strength of asphalt mixtures. Other important factors are the characteristics of the aggregate and bitumen.
To optimize pavement durability and minimize the risks of early failure, it is important to know which aggregates and bitumens should be used. Fundamental research based on tests which are common in other types of engineering has resulted in very useful guidelines for practice. Because of its importance to practice, part of the course will be devoted to this topic.
The quality of the end product is highly influenced by its production process. During the course the latest developments with respect to laying and compaction techniques will be presented. Furthermore, examples will be given of measures taken by a contractor to increase the level and homogeneity of asphalt mixtures as laid. |
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| Which subjects will be discussed |
| Geophysical measurement techniques for pavement evaluation
Advanced radar technology
Acoustic measurements, as a tool for condition monitoring
Practical characterisation of aggregates and bituminous binders based on a fundamental characterisation
New developments in laying and compaction of asphalt mixtures
Contractors approach towards improvement asphalt mixture performance |
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| Target group |
| The course is strongly recommended to the higher technical echelon of contractors, consultants, road authorities as well as researchers in the fields of pavement design, construction and maintenance. |
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| Programma |
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December 6
- Introduction
A.A.A. Molenaar, TU Delft
- Evaluation of pavement surfaces using radar technology
R.L. Lytton, Texas A&M University
- Introduction into the use of geophysical measurement systems for pavement evaluation
M. Maresteanu, University of Minnesota
- Natural radiation can be used for pavement evaluation
J. Limburg, Medusa BV
- New developments in density measurements
J. Limburg, Medusa BV
- Accoustic measurements for pavement evaluation
E. Tijs, Microflown technologies
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December 7
- Characterisation of binders and aggregates for durable pavements
E. Massad, Texas A&M University
- New developments in laying and compaction of asphalt layers
To be determined, Wirtgen
- Contractors actions for achieving better pavement performance
B.W. Sluer, BAM Wegen
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| Download brochure |
| You can download the brochure of the course Road Maintenance: A High-Tech Industry? here |
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| Other interesting courses |
| Binnenstedelijke infrastructuur op slappe bodem |
| Geodatamanagement in bouw- en infraprojecten |
| Toepassing van folieconstructies in de infrastructuur |
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| Key words |
| beheer, onderhoud, aanleg wegen, infrastructuur, bouwprocessen, beleid, projectontwikkeling, duurzaam bouwen, materialengebruik, bouwmanagement |
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