Table 4. Thermal insulation properties of samples and other commonly used thermal insulation materials.

Materials	Density (g cm−3)	Thermal conductivity (W m−1 K−1)	Diffusivity (mm2 s−1)	Source
S-75	0.052	0.144	0.065	—
S-90	0.080	0.138	0.064	—
S-95	0.403	0.128	0.061	—
Lightweight concrete	0.551	0.155	0.319	48
Polyurethane board	0.028	0.024	0.558	48
	0.033	0.022	0.434
Class fiber (axial)	0.030	0.042	1.460	48
	0.095	0.038	0.417
Rock wool (axial)	0.050	0.042	1.000	48
	0.120	0.040	0.397