Physical Properties
Brand	GG-0.7a	GG-0.7b	GG-0.6	GG-0.5a	GG-0.5b	GG-0.4
Index
Bulk Density	0.7	0.7	0.6	0.5	0.5	0.4
Compressive Strength Mpa	2.45	1.18	0.78	0.78	0.59	0.78
Permanent Line Chang	900
Conductivity Coefficient	0.2	0.21	0.17	0.15	0.16	0.13