Experimental Study on Compaction Characteristics and Mechanical Behavior of Crushed Rock Masses

Table 2

Orthogonal design scheme.

Test	Moisture content	Compression	Particle size	Volume-based gradation
1	1	1	1	1
2	1	2	2	2
3	1	3	3	3
4	1	4	4	4
5	2	1	3	4
6	2	2	4	3
7	2	3	1	2
8	2	4	2	1
9	3	1	4	2
10	3	2	3	1
11	3	3	2	4
12	3	4	1	3
13	4	1	2	3
14	4	2	1	4
15	4	3	4	1
16	4	4	3	2

Note: the levels 1, 2, 3, and 4 assigned to the moisture content represent moisture content of 5%, 6%, 7%, and 8%, respectively. A similar design was adopted for the compression ratio, particle size, and volume-based gradation.