Effect of Impact Load on Splice Length of Reinforcing Bars

International Journal of Concrete Structures and Materials

Table 1 Summary of test program.

Specimen groups	Dimensions (mm × mm)	Longitudinal bars	Transverse bars	Splice length (mm)	Concrete strength (MPa)	Hammer mass (kg)	Drop height (m)	P_s/P_M
S-18-300-L	250 × 300	D18	D8@100	300	37.72	272.3	3.15/6.30/12.60	2.38
S-18-300-L				300	37.72	597.3	5.74	2.38
S-18-400-L				400	37.96	272.3	3.15/6.30/12.60	2.38
S-18-400-L				400	37.96	597.3	5.74	2.38
S-18-300				300	31.16	532.3	1.58/3.15/4.73	2.34
S-18-300				300	31.16	857.3	1.96	2.34
S-18-400				400	30.01	532.3	1.58/3.15/6.30	2.34
S-18-400				400	30.01	857.3	1.96	2.34
S-25-300		D25		300	34.62	532.3	1.58/3.15/4.73	1.38
S-25-300				300	34.62	857.3	1.96	1.38
S-25-400				400	32.77	532.3	1.58/3.15/6.30	1.38
S-25-400				400	32.77	857.3	1.96	1.38

P_S, shear resistance; P_M, flexural resistance; 1 kN = 0.2248 kips; 1 mm = 0.0394.