Effect of Polyester Fiber on Air Voids and Low-Temperature Crack Resistance of Permeable Asphalt Mixture

Table 7

Connected air voids and air voids relationship under different polyester fiber dosage.

Fiber content (%)	Asphalt content (%)	Test piece height (%)	Air voids (%)		Connected air voids (%)
			Single value	Average value	Single value	Average value
0	4.95	64.8	19.8	19.7	15.1	15.4
		64.6	20.3		14.8
		64.3	19.2		14.6
		63.7	19.6		17.1
0.3	5.0	64.8	19.5	19.4	15.2	15.1
		64.8	19.2		15.0
		64.6	19.5		14.8
		64.7	19.5		15.3
0.35	5.05	64.5	19.2	19.3	14.6	15.0
		64.9	19.6		15.4
		64.6	19.3		14.8
		64.3	19.1		15.0
0.4	5.1	64.2	18.4	19.1	14.0	14.9
		63.7	19.5		15.4
		63.5	19.6		15.1
		63.4	19.0		15.2
0.45	5.15	64.6	19.3	19.6	14.5	15.2
		63.6	19.9		15.5
		63.6	20.0		16.3
		64.2	19.1		14.3
0.5	5.2	63.7	18.3	19.7	14.0	15.3
		64.2	21.1		17.1
		64.7	19.6		15.0
		64.8	19.8		15.0