Study on the Thermal Properties of Hollow Shale Blocks as Self-Insulating Wall Materials

Table 1

Chemical composition of shale.

Chemical constituents	Content (wt%)
SiO2	62.91
Al2O3	17.01
Fe2O3	6.83
CaO	6.13
MgO	2.78
K2O	1.88
Na2O	1.04
SO3	0.65
TiO2	0.77