Analysis of the Mechanical Behaviour of Asphalt Concretes Using Artificial Neural Networks

Table 2

Bitumen characteristic properties.

Property	Bitumen type
	50/70	SBS modified
Penetration (0.1 × mm); EN 1426	64	45
Softening point (°C); EN 1427	45.6	78.8
Elastic recovery (%); EN 13398	—	97.5
Fraas breaking point (°C); EN 12593	−7.0	−15.0
After aging
Retained penetration (%)	—	84
Difference in softening point (°C)	—	−2.4