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

Table 2

Main technical indicators of fine aggregates.

Material particle size (mm)	Apparent relative density	Surface relative density	Gross volume relative density	Water absorption rate (%)
1.18	2.702	2.672	2.654	—
0.6	2.723	2.683	2.661	—
0.3	2.740	2.707	2.688	—
0.15	2.728	2.701	2.689	—
0.075	2.721	2.693	2.676	—