Effects of Doping Glass Fibers on the Early Strength of Sand-Based Cemented Paste Backfill for Solid Wastes Disposal in a Coal Mine

Table 1

Chemical composition of the raw materials.

Ingredient	CaCO3	SiO2	MgO	Al2O3	CaO
Fly ash	38.22	45.77	0.16	5.86	0.68
Aeolian sand	22.28	56.11	0.6	3.16	0.27
Cement	24.7	54.97	0.55	13.52	13.52
Quicklime	10.14	21.86	1.30	11.5	51.5