In the new asphalt that is developed in this project small steelwol fibers are mixed in the bitumen. After some time (probably a few years or after a strong winter like we have now) when small microcracks occur in the bitumen and when the aggregates in the asphalt mix at the surface start to debond, the steelwool fibers are heated with induction energy. By heating up the fibers the bitumen will melt and close the cracks and repair the bond with the aggregates. It is important not to apply too much heating, because that would close all the pores in the porous asphalt.
The induction technique will be further developed and optimized in this project bij partner INTRON.
No comments:
Post a Comment