Study on Void Structure Reconstruction of Asphalt Mixture by X-Ray Computed Tomography and Otsu’s Method

Table 1

Compositions and aggregate gradations of asphalt mixtures.

Sieve size (mm)	% passing by weight
	AC13	SUP13	SMA13	PA13
16	100	100	100	100
13.2	95.9	97.1	96.7	97.7
9.5	76.8	78.8	59.1	70.2
4.75	50.7	53.0	25.5	21.2
2.36	34.4	32.5	22.0	16.4
1.18	25.2	19.9	18.3	12.6
0.6	18.3	15.3	14.9	9.1
0.3	13.5	9.4	12.8	6.9
0.15	10.6	7.2	11.7	5.8
0.075	7.2	5.5	10.5	5.1

Note: the number of each mix represents the nominal maximum aggregate size.