An Experimental Investigation on Flexural Behavior of Reinforced Concrete Beams Strengthened by an Intelligent CFRP Plate with Built-In Optical Fiber Bragg Grating Sensors

Table 6

Short-term prestress loss for test beams.

Specimen	Prestress loss (Mpa)	/mm	Prestress loss rate (%)
B-GR-0-T (B1)	108.90	0.76	15.2
B-LR-0-T (B2)	102.02	0.71	14.3
B-AC-0-T (B3)	89.93	0.63	12.6
UB-GR-0-T (B4)	102.80	0.72	14.4
UB-GR-300-T (B6)	81.83	0.57	11.5
UB-NG-300-T (B5)	86.90	0.61	12.2
Average value	—	0.67	13.4
Flat anchorage in code [31]	—	2.00
Waveform anchorage in code [31]	—	1.00
Xue and Zeng [29]	—	4.00
Wang and Dai [7]	—	1.00 or 1.20
In this paper		0.8