1. what material (maybe plasticized bitumenous or plasticized asphalt) is used to pave Heathrow and similar large airports? I understand its not concrete anymore becsause of cracking.
2. Our runway handles heavy jets up to about 570,000 lbs (250,000 Kg.). Its touchdown zone is currently paved in 14" (35 cm) of 4000 psi (K-280 or 27,500 kilo pascal) concrete with no steel reinforcing bars but with one layer WWF (woven wire fabric). It is paved with concrete slabs measuring about 6 m x 6m.
3. Beause of cracking at the corners, We replaced these slabs with 16" (40 cm) of 5000 psi (K-350 or 34,400 kilo pascals) concrete, buit the new concrete still cracks at the corners. So we are considering replacing it with some type plasticized asphault or bituminous pavement. What do you recommend we use?
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