Table 4 Typical properties of granite and their dependence with temperature

ϕ ₀

%

0.8

ρ _dry

kg.m^-3

2,500 to 2,800

Mean value of approximately 2,600

b

1

0.27 to 0.45

$c_{\text{dry}}^{\sigma }$

J.kg^-1.K^-1

∼ 800

Increase of approximately 25%

if T∈ [20; 250]°C

K _int

m²

10^-20 to 10^-18

Sane

10^-16 to 10^-11

Fractured

λ _dry

W.m^-1.K^-1

2.3 to 3.2

Decrease of approximately 1.2

if T∈ [20; 250]°C

α ₀

10^-5 K^-1

1.4

Approximately constant if T∈ [30; 200]°C

E

GPa

26 to 78

Mean value of approximately 59

30

Approximately constant if T∈ [30; 160]°C

ν

1

0.10 to 0.38

Mean value of approximately 0.23

0.25

Approximately constant if T∈ [30; 160]°C

Θ

µW.m^-3

0.7 to 7.6