Experimental Research on Foamed Mixture Lightweight Soil Mixed with Fly-Ash and Quicklime as Backfill Material behind Abutments of Expressway Bridge

Table 2

orthogonal table.

Test number	Affecting factor				Test results
	Cement	Fly-ash	Quicklime	Foam	Wet density (kg/m^3)	Unconfined compressive strength (MPa)
1	1	1	1	1	678	0.34
2	1	2	2	2	690	0.45
3	1	3	3	3	770	0.68
4	1	4	4	4	800	0.95
5	2	1	2	3	910	1.37
6	2	2	1	4	1060	2.29
7	2	3	4	1	727	0.76
8	2	4	3	2	730	0.72
9	3	1	3	4	1180	3.93
10	3	2	4	3	1120	3.41
11	3	3	1	2	780	1.14
12	3	4	2	1	870	1.22
13	4	1	4	2	970	1.69
14	4	2	3	1	940	1.69
15	4	3	2	4	1170	3.87
16	4	4	1	3	1040	2.7