Moisture Stability of Hard Sandstone Asphalt Mixture Based on APT with MMLS3

Table 5

Combined gradation.

Sieve size (mm)	Mass percentage passing through the sieve (%)
Gradation	0.075	0.15	0.3	0.6	1.18	2.36	4.75	9.5	13.2	16
Upper limit of gradation	8	15	20	28	38	50	68	85	100	100
Lower limit of gradation	4	5	7	10	15	24	38	68	90	100
Middle limit of gradation	6	10	13.5	19	26.5	37	53	76.5	95	100
Combined gradation	5	8	11	16	24	34	50	76	95	100