Mine Waste-Based Next Generation Bricks: A Case Study of Iron Ore Tailings, Red Mudand GGBS Utilization in Bricks

Table 6

Apparent porosity, apparent specific gravity, bulk density, water absorption, and compressive strength

Composition	Apparent porosity (%)	Apparent specific gravity	Bulk density (g/cm^3)	Water absorption (%)	Compressive strength (N/mm^2) (7 Days)	Compressive strength (N/mm^2) (28 Days)
Mix-1I	14.6	1.48	1.26	3.78	11.25	17.27
Mix-2I	17.25	1.38	1.11	4.53	17.43	27.01
Mix-3I	18.2	1.3	1.08	4.98	21.26	28.23
Mix-4I	20.32	1.25	1.03	5.81	15.1	23.54
Mix-5I	25.4	1.2	0.97	7.58	12.33	20.87
Mix-1R	14.28	1.41	1.02	8.96	5.92	8.3
Mix-2R	21.25	1.33	0.93	9.25	8.3	11.06
Mix-3R	24.17	1.24	0.88	9.86	12.25	16.67
Mix-4R	33.33	1.13	0.78	10.25	10	14.22
Mix-5R	36.4	1.06	0.64	10.4	12.64	12.64