Research Article

Investigation on the Properties and Distribution of Air Voids in Porous Asphalt with Relevance to the Pb(II) Removal Performance

Table 4

Correlations among the three distributional parameters.

ParameterCorrelation coefficient
PAC-16(A)PAC-16(B)
AV contentAV numberAV volumeAV contentAV numberAV volume

AV content1.000−0.7650.9481.000−0.6900.819
AV number−0.7651.000−0.747−0.6901.000−0.538
AV volume0.948−0.7471.0000.819−0.5381.000