Performance of Used Tire Cushion Layer under Rockfall Impact

Table 1

Test conditions.

Set number.	Serial number	Filling contents	Artificial rockfall
			/kg	/m	Impact energy/kJ
A	1#	Sand	100	1	1
	2#	Sand	100	2	2
	3#	Sand	100	3	3
B	4#	Sand	200	0.5	1
	5#	Sand	200	1	2
	6#	Sand	200	1.5	3
C	7#	Gravel	100	1	1
	8#	Gravel	100	2	2
	9#	Gravel	100	3	3
D	10#	None	100	1	1
	11#	None	100	2	2
	12#	None	100	3	3