Road Performance of Calcium Sulfate Whisker and Polyester Fiber Composite-Modified Asphalt Mixture

Table 2

Properties of the aggregate used in the study.

Sieve diameters	Properties	Results	Standard in China (JTG E42-2005)
Mineral powder	Specific gravity (g/cm^3)	2.682	≥2.6
	Hydrophilic coefficient	0.7	＜1
	Plasticity index (%)	3.7	＜4
4.75–0.075 mm	Specific gravity (g/cm^3)	2.70	≥2.50
	Firmness (%)	5	≤12
	Sediment percentage (%)	1.1	≤1.2
	Sand equivalent (%)	64	≥60
9.5–4.75 mm	Specific gravity (g/cm^3)	2.70	≥2.60
	Water absorption (%)	1.79	≤2.0
	Abrasion loss (%) (Los Angeles)	23	≤28
16–9.5 mm	Specific gravity (g/cm^3)	2.68	≥2.60
	Water absorption (%)	1.7	≤2.0
	Abrasion loss (%) (Los Angeles)	20	≤28