Experimental Study on Impact Absorption Capacity of Various Expanded Materials for Rock Shed

Table 2

Specimen list.

Name of specimen	Presence of core slab	Type of expanded material	Set fall height H (mm)	Measurement impact velocity V (m/s)	Input energy Ek (J)
N-ST-H50	Without core slab	ST	50	0.99	9.77
N-ST-H100			100	1.40	19.7
N-ST-H150			150	1.74	30.3
N-ST-H200			200	1.98	39.1
N-PP-H50		PP	50	0.97	9.34
N-PP-H100			100	1.40	19.7
N-PP-H150			150	1.74	30.3
N-EST-H50		EST	50	0.97	9.34
N-EST-H100			100	1.40	19.7
N-EST-H150			150	1.81	32.9
N-EST-H200			200	1.98	39.1
N-EST-H300			300	2.56	65.5
C-ST-H200	With core slab	ST	200	2.07	42.9
C-ST-H300			300	2.42	58.4
C-ST-H400			400	2.72	73.9
C-PP-H200		PP	200	1.98	39.1
C-PP-H300			300	2.56	65.5
C-EST-H200		EST	200	2.07	42.9
C-EST-H300			300	2.42	58.4
C-EST-H400			400	2.90	84.1
C-EST-H500			500	3.11	96.5
C-EST-H600			600	3.35	112.0