Experimental Investigation of the Shear Behavior of a Concrete Beam without Web Reinforcements Using External Vertical Prestressing Rebars

Table 1

Main parameters of the specimens.

Specimen	Dimension b × h × l (mm³)	Stirrups	Longitudinal tension rebars	Longitudinal compression rebars	EVPR				γp	ηp
					Diameter (mm)	Spacing (mm)	Pulling force (kN)	ρsEP (%)
RC_1	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	—	—	—	—	—	—
RC_2	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	—	—	—	—	—	—
EP_P22_S1	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	14	340	22	0.36	0.20	0.91
EP_P22_S2	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	14	240	22	0.51	0.28	0.87
EP_P22_S3	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	14	280	22	0.44	0.24	0.89
EP_P26_S3	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	14	280	26	0.44	0.28	0.87
EP_P18_S3	250 × 500 × 3000	Φ12@100	5Φ22	2Φ22	14	280	18	0.44	0.20	0.91