Evaluation of the Physical and Adhesive Properties of Natural Weathering Asphalt

Table 3

Residual penetration ratio of asphalt.

Asphalt	Residual penetration ratio (%)
	1 year	2 years	3 years	4 years
A70	39.4	27.8	23.6	18.5
SBSMA	45.1	36.2	30.5	27.3
AR	59.4	46.2	44.3	37.0