Physicomechanical Assessments and Heavy Metals’ Leaching Potential of Modified Asphalt Binders Incorporating Crumb Rubber and Tin Slag Powders

Table 6

The determination of surface area.

Sieve size (mm)	Percent passing (%)	Surface area factor (m^2/kg)	Surface area (m^2/kg)
20	100	—	0.41
14	95	—	—
10	81	—	—
5	56	0.41	0.229
3.35	47	0.82	0.3854
1.18	26	1.64	0.4264
0.425	18	4.78	0.8604
0.15	10	12.29	1.229
0.075	6	32.77	1.9662
Total surface area of combination size aggregate			5.507