Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt

Table 2

Main technical indexes of modified asphalt.

Indexes	Test results	Specification
Penetration (25°C)/0.1 mm	56	40~60
Softening point/°C	60.5	≥60
Ductility (5°C)/cm	29.5	≥20
Viscosity (135°C)/Pa·s	1.550	≤3
TFOT
Quality change/%	−0.252	≤±1.0
Residual penetration ratio (25°C)/%	78.6	≥65
Residual ductility (5°C)/cm	17.5	≥15