Prediction Model for Connected Voids Ratio of the Porous Asphalt Mixture

Table 9

Verification gradation.

Gradation types	The quality percentage of passing the screen hole (square screen hole, mm) (%)										Asphalt-aggregate ratio (%)
	16	13.2	9.5	4.75	2.36	1.18	0.6	0.3	0.15	0.075
Gradation 1	100	95	70	15	13	13	9	7	5	4	4.4
Gradation 2	100	88.9	70.5	18.9	15.2	11.5	8.5	6.4	5	4.6	5.5
Gradation 3	100	86.3	63.7	23.7	20.3	13.9	10.5	7.4	5.2	4.7	6
Gradation 4	100	95	74	23	15	12	9	6.5	5	4.5	5
Gradation 5	100	92	64.3	11.4	4.8	4.3	3.8	3.3	2.8	2.3	3.5