Investigation on the Combined Effect of Fibers and Cement on the Mechanical Performance of Foamed Bitumen Mixtures Containing 100% RAP

Table 2

Characteristics of bitumen.

Pen 25°C (dmm)	R&B (°C)		Viscosity @ 160°C (Pa s)	Viscosity @ 135°C (Pa s)	Foaming temperature (°C)	(%)		H- (s)
75	46	−1.4	0.175	0.500	160	3	14	2

: penetration index. : the ratio (by mass) of the flow rate of the water when foam bitumen is produced. Ratio. -Life.