Building Material

Thermal Conductivity k (W/m・K)

Specific Heat Cp (J/kg・K)

Density (kg/m3)

Fired clay brick (FCB)

0.840

880

1820

Fly ash brick (FAB)

0.360

857

1700

Cement Plaster

0.721

840

1762

Reinforced cement concrete (RCC)

1.58 [20]

880

2288

Air

0.026 [21]

1005

1.12 - 1.2

Soil (wet)

1.68 [22]

753 - 837

1600 - 1800

Extruded polystyrene foam

0.034 - 0.037

1300

5 - 10