Reinforcement of Recycled Foamed Asphalt Using Short Polypropylene Fibers

Table 1

Physical properties of short polypropylene fiber used in the study.

Physical properties	Value	Test procedures
Denier	0.00189 ± 0.004 mm	ASTM D 1577
Length	10 ± 2 mm	—
Crimps	None	ASTM D 3987-82
Tensile strength	2,812 Kg/cm^2 min.	ASTM D 822-83
Elongation	33%, min.	ASTM D 2256-80
Specific gravity	0.91	—
Alkali resistance	99% strength retained	40% NaOH solution at 21°C for 1,000 hours
Acid resistance	99% strength retained	95% HCI solution at 21°C for 1,000 hours
Moisture regain at 70% and 65% relative humidity	Less than 0.1%	ASTM D 2654-76