Research on the Strength Variation of Root-Clay Systems under Freeze-Thaw Action

Table 3

Pull-out test program.

Test number	Root type	Freezing temperature	Freeze-thaw times
1	Zoysia japonica	0°C	0
2			1
3			3
4			6
5	Carex leucochlora	0°C	0
6			1
7			3
8			6
9	Eleusine indica	−5°C	0
10			1
11			3
12			6
13	Setaria viridis	−15°C	0
14			1
15			3
16			6