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| Type of project: | Major maintenance and renovation Runway 18R-36L |
| Construction period: | January 25th to April 26th, 2021 |
| Location: | Amsterdam Airport Schiphol Polderbaan |
| Quantity: | ± 3000 MT of Sealoflex® polymer modified bitumen SFB 5-90 (LT) |
Runway 18R/36L (Polderbaan) at Amsterdam Airport Schiphol was constructed between 2001 and 2003 and is 60 metres wide and 3800 metres long, being the longest runway at Schiphol Airport.
The asphalt construction during installation consisted of three open graded polymer modified asphalt layers with a dense graded polymer modified asphalt on top. A (tar-based) antiskid layer was applied on top of this. The asphalt construction was laid on a foundation of sand and a cement treated base (CTB).
The polymer modified bitumen used was a heavily modified PMB (Superpave PG 76-22; Sealoflex® SFB 5-50 (HT)) to meet the tight tender specifications for rutting and reflective cracking.
For major maintenance in 2021 about 600,000 m2 of the runway and surrounding pavements were replaced with 150,000 tons of new asphalt containing 60% recycled asphalt (RAP) originating from the old polymer modified asphalt layers.
A new asphalt mixture for base and bind layers was produced containing 60% RAP of the old asphalt pavement with a heavily modified PMB (Sealoflex® SFB 5-90 (LT)) in combination with a rejuvenating agent to meet the tight tender specifications within a period of 13 weeks without any problems. As surface layer a special developed porous friction course (without RAP) was applied.
