Issue 66

M. Q. Hasan et alii, Frattura ed Integrità Strutturale, 66 (2023) 297-310; DOI: 10.3221/IGF-ESIS.66.18

Phase II (Phase II) occurs after the initial cracking load when the cracks increase in number and breadth. This continues till the Ps. Once this threshold was passed, the last step (step III) created wider-cracks. Phase I and II inflection points are also easily identifiable, as is Ps, and this holds over a wide range of damage intensities. Phase III is extended for the reinforced specimen in comparison to the control.

Figure 10: The Ps and Pu for LWC beams rehabilitated by full-height U-wrapping CFRP sheets.

Service displacement s P (mm)

Decreasing in Service displacement s  %

Ultimate displacement m  (mm)

Changing in ultimate displacement m  %

Beam Specimen Control SF - 100 RF - 50 RF - 60 RF - 70

25.39

-

38.27 39.46 34.92 34.69 35.6

-

17.4

-31.47 -24.97 -23.95 -21.66

3.11 -6.98 -8.75 -9.35

19.05 19.31 19.89

s  and m  for LWC beams rehabilitated by full-height U-wrapping CFRP sheets.

Table 11: The

s  and m  for LWC beams rehabilitated.

Figure 11: The

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