Study on Permeability and Blocking Resistance of Composite Specimen with Double-Layer Permeable Asphalt Mixture

Table 6

Performance of PAC mixtures with optimal asphalt content.

Mixtures	20% PAC-10	22% PAC-10	24% PAC-10	PAC-16 (22%)	Specification
Optimal asphalt content (%)	4.4	4.2	3.2	3.4	—
Porosity (%)	20.3	22.2	24.0	22.3	—
Interconnected porosity (%)	15.2	18.43	20.2	19.5	≥14
Leakage (%)	0.110	0.132	0.113	0.192	<0.3
Dispersion (%)	8.64	8.93	8.75	8.64	<20
Stability (kN)	7.06	5.72	5.17	5.51	≥5