Study on Joint Damage of Double Prefabricated Fragments Penetrating Finite Thickness Concrete

Table 9

Results of coplanar double fragment penetration into the open pit area.

Number	Surface joint occurrence time (ms)	Boundary joint length (mm)	Length of pit opening area (mm)	Width of pit opening area (mm)
1	0.015	33	49.5	33
2	0.025	33.55	68.8	40.15
3	0.04	28.6	79	40.8
4	0.11	16.5	77.4	32.64
5	0.01	43	65.36	43
6	0.02	38.7	77.4	44.2
7	0.02	36.96	71.4	38.64
8	0.035	34	81.6	40.8
9	0.007	67.94	69.66	67.94