In 1983, the main runway of the Copenhagen Airport originally built in 1944 was renewed. The new pavement has the following composition and the previous pavement was reused as much as possible through recycling: 30 cm of unbound base course (max. aggregate size 35mm)
635 kg.m 2 of bituminous base course
110 kg/m2 of binder course
90 kg/m2 of bituminous wearing course
In contrast to the base courses and the binder course which are composed completely or partly of recycled materials, the wearing course was mixed from 100 % new material adding TLA to the asphalt. The decision to use TLA was made because of longer life expectancy. For the wearing course only crushed stone was used, namely granite with 15% basalt. 60 % of the aggregates were to be size 8/12. The filler content was around 10 %. The wearing course was laid in four stages with 2 and 4 finishers in order to avoid cold seams. The entire construction work was completed in 120 days and has maintained its perfect condition up to the present.
Taken from "Wearing courses on runways and taxiways in Europe" - by Prof. Dr. - Ing. Ernst - Ulrich Hiersche