structural layer

thickness (cm)

elasticity modulus E (MPa)

Poisson’s ratio M

heat conductivity coefficient (w/m˚C)

Linear elasticity coefficient (1/˚C)

asphalt concrete

15

1800

0.25

1.0

2.0×10^-5

cement stabilized macadam

20

1200

0.25

1.2

1.0×10^-5

lime-ash soil

30

800

0.25

1.1

1.1×10^-5

soil matrix

135

40

0.35

1.0

50×10^-5