Laboratory Investigation on the Interface Bonding between Portland Cement Concrete Pavement and Asphalt Overlay

Table 1

Properties of tack coats.

Tack coat type	Penetration at 25^°C (0.1 mm)	Ductility (cm)	Viscosity at 135°C (Pas)	Softening point (°C)
Rubber asphalt	53.2	35.5	2.23	72.6
Virgin asphalt	62.4	123	0.56	48.3
Emulsified asphalt	67.8	57.7	0.7	-
Cutback asphalt	65.1	129	0.6	-