Research on the Prediction Model of the Friction Coefficient of Asphalt Pavement Based on Tire-Pavement Coupling

Table 1

The gradation of mineral aggregate of asphalt mixtures.

Sieve size (mm)	AC13			SMA13			OGFC13
	Coarse aggregate types			Coarse aggregate types			Coarse aggregate types
	Basalt	Limestone	Granite	Basalt	Limestone	Granite	Basalt	Limestone	Granite
16	100	100	100	100	100	100	100	100	100
13.2	97.9	98.5	98.8	96.9	97.7	98.2	96.3	97.2	96.3
9.5	80.5	80.6	80.5	70.6	70.7	69.7	64.3	64.5	64.3
4.75	61.4	60.7	61.6	29.2	28.3	29.9	18.5	17.5	18.5
2.36	44.1	44.5	44.2	24.5	25.8	24.5	10.8	11.7	10.8
1.18	30.6	31.1	30.9	19.1	20.0	19.0	8.2	8.8	8.2
0.6	20.8	21.4	21.1	15.8	16.2	15.5	6.5	6.7	6.5
0.3	14.5	15.1	14.9	13.9	14.1	13.6	5.3	5.3	5.3
0.15	10.1	10.7	10.6	12.6	12.7	12.4	4.4	4.4	4.4
0.075	7.4	7.8	7.8	11.4	11.1	11.0	3.7	3.3	3.7