8. Hot mix asphalt

These are mixtures of aggregates and pure or modified bitumen, hot-mixed in a production plant and laid using special equipment called a "paver".

To fully understand the problems facing hot mix asphalt, it is useful to take a brief look at the history of its development in France, based largely on the document "Les enrobés bitumineux". , and distinguish 4 main periods.

• Dense asphalt (1950-1965)

  Designed on the basis of asphalt mixes used in the United States after the Second World War, they developed significant creep and rutting phenomena during the very hot summer of 1965. The analyses carried out led to the following explanations:...