Shear Strengthening of RC Deep Beams with Symmetrically or Asymmetrically Positioned Square Openings Using CFRP Composites and Steel Protective Frames

Table 2

Test results.

Specimens	(MPa)	tp (mm)	Pmax (kN)	(mm)	pu (kN)	(mm)	Eu (N·m)	Pmax,u (kN)	Eu,u (N·m)
C1	42.1	30	565	7.84	480	9.68	3480	537	3309	1	1	1	1
C2	41.0	15	267	4.73	235	11.20	2341	230	2284	0.43	0.69	0.43	0.69
S	41.7	30	213	5.58	181	7.64	1104	204	1058	0.38	0.32	1	1
S-EBR	38.1	30	288	7.74	276	8.10	1375	302	1444	0.56	0.44	1.48	1.36
S-EBROG	42.0	30	310	9.13	264	10.67	2210	295	2103	0.55	0.64	1.45	1.99
S-W	40.7	30	289	7.44	246	10.86	2230	282	2195	0.53	0.66	1.38	2.07
S-F	44.7	30	473	14.49	473	14.49	5014	424	4487	0.79	1.36	2.08	4.24
E	40.9	30	187	4.56	159	5.68	656	182	641	0.34	0.19	1	1
E-EBR	37.0	30	250	7.48	213	8.33	1279	270	1382	0.50	0.42	1.48	2.16
E-EBROG	39.0	30	287	8.43	244	9.55	1805	294	1852	0.55	0.56	1.62	2.89
E-F	41.6	30	326	4.25	276	9.85	2542	314	2433	0.58	0.74	1.73	3.8