Study on the Influence of Closed-Cell Aluminum Foam on the Impact Performance of Concrete Pier after Equal Replacement with Stainless Steel Reinforcement

Table 7

Impact test results and comparison.

Height of the drop hammer (m)	Average impact velocity (m/s)	1^st group			2^nd group
		Peak impact force (kN)		Relative ratio (%)	Peak impact force (kN)		Relative ratio (%)
		S1-16	Z2-20		S1-20	Z2-25
2	0.72	111.57	85.91	23.00	89.3	115.2	22.48
4	1.10	200.49	157.29	21.55	124.61	158.78	21.52
6	1.42	313.66	208.15	33.64	153.47	188.43	18.55
8	1.67	478.85	424.91	11.26	349.4	385.91	9.46
10	1.84	672.11	607.87	9.56	578.77	635.43	8.92
12	2.08	830.39	747.48	9.98	781.72	823.17	5.04