Table 3.

Experimental results.

Samples	S1	S2	S3	S4	S5
Density [Kg/m3]	2090	1910	1745	1562	1398
Porosity [%]	18	29	33	37	42
Thermal conductivity [W/m K]	0.55	0.51	0.49	0.45	0.41
Thermal diffusivity [mm2 /s]	0.572	0.513	0.492	0.458	0.427
Specific heat capacity [J/kg.C]	879	1035	1097	1215	1317