Effects of Crumb Rubber Size and Concentration on Performance of Porous Asphalt Mixtures

Table 1

The physical properties of coarse aggregate.

Properties	Specification	Results	Specification
			Min.	Max.
Los Angeles abrasion (%)	ASTM C131	13.5	—	30
Sodium sulfate soundness (%)	ASTM C88	0.64	—	12
Percent fractured faces (%)	ASTM D5821	100	100	—
Flakiness index (%)	BS 812	20	—	25
Polish value	ASTM C3319	53	50	—
Stripping resistance (%)	ASTM D1664	60–65	—	50