Study on the Static Performance of Prefabricated UHPC-Steel Epoxy Bonding Interface

Table 5

Test results.

Test	Specimen number	(kN)	(MPa)	(MPa)	(mm)	(mm)
Direct shear test	PS-E-1	107.43	0	4.77	0.051	0.054
	PS-E-2	126.81	0	5.64	0.042	0.058
	PS-E-3	124.81	0	5.55	0.039	0.051
	PS-E-5	103.60	0	4.60	0.037	0.048
Tensile test	PT-E-1	23.06	1.23	0	0.005	0.006
	PT-E-4	25.46	1.36	0	0.005	0.006
	PT-E-5	20.19	1.08	0	0.005	0.006
	PT-E-6	19.49	1.04	0	0.005	0.006
Tensile-shear test	ST-E-2	27.91	0.93	0.54	0.306	0.316
	ST-E-3	30.14	1.00	0.58	0.326	0.347
	ST-E-4	37.18	1.24	0.72	0.304	0.316
	ST-E-6	32.04	1.07	0.62	0.320	0.322

Note: is the ultimate bearing capacity of various specimens before failure; is the normal tensile strength of the interface before the failure of various specimens, the subscript represents the normal interface direction and represents that the specimen is in the ultimate loading state; is the tangential tensile strength of the interface before the failure of various specimens, the subscript represents the tangential interface direction, and represents that the specimen is in the ultimate loading state; is the displacement value corresponding to the ultimate bearing capacity ; is the ultimate displacement of various specimens(in particular, the displacement in the tensile-shear test is the average value of the dial indicator data).