Experimental Evaluation of Multiple Frost Heaving Parameters for Preflawed Granite in Beizhan Iron Mining, Xinjiang, China

Table 1

The considered factors influencing frost heaving force and their levels for the RSM model.

Influential factors	Coded symbol	Levels			Unit
		Minimum (-1)	Mean (0)	Maximum (+1)
Width (FW)	A	1	2	3	mm
Length (FL)	B	12	24	36	mm
Cement type (CT)	C	0	1	2	/
Rock lithology (RL)	D	-1	0	1	/