Combined Effects of Graphite Tailings and Curing Conditions on the Early-Age Performances of Cement Mortar

Table 4

Properties of sand and graphite tailings.

Type	Natural stand	Graphite tailings
Size (mm)	0.16–5	0.2–0.4
Apparent density (kg/m^3)	2,620	2,855
Bulk density (kg/m^3)	1,630	1,540
24-hour water absorption (%)	21.8	36.7
Fineness modulus	2.49	0.90
pH value	7.0	10.0