The Netherlands has one of the world's densest road networks. Some 130,000 km is hard-surfaced, including 5,000 km of national trunk roads. TNO works on methods to reliably and accurately predict the service-life performance of roads. If it is clear when maintenance work is required, the parties involved can invest effectively. In this context we focus on new solutions, on improving materials such as asphalt, and on processes such as maintenance.
TNO researches the properties and performance of existing materials and the structures of existing roads, including national trunk road. TNO uses this and other knowledge to develop innovative concepts for improving road performance. We also work on monitoring systems that measure the quality of asphalt faster and more accurately. This information is a sound basis for decision-making on maintenance and replacement.
Asphalt consists of several materials. Because the precise composition and the properties of these materials are often unknown, it is difficult to ascertain how they will perform. TNO studies these individual materials and assesses their performance and that of the asphalt as a whole. This means that its quality is easier to determine. TNO also develops tests for rapidly and reliably assessing the quality of innovative types of asphalt.
Our work in this field focuses on: