Issue 58

M. Emara et alii, Frattura ed Integrità Strutturale, 58 (2021) 48-64; DOI: 10.3221/IGF-ESIS.58.04

According to Tab. 5 and Fig. 11, for beams (B4-12D-75L1200, B7-12D-150L1200, B10-cbD75L1200, and B13-cbD- 150L1200), there was a change in the width of the CFRP strengthening layer (75 mm and 150 mm) when using Ph 12 and CFRP bars for reinforcement at 1200 mm length of strengthening layer. These changes leading to reduce deflection by 6.5 and 1.7 % and impact load by 2.7 and 0.3 % for Ph 12 and CFRP bars reinforcement, respectively.

(a)

(b)

Figure 11: Time-deflection curve

Parameters

Samples

Impact Velocity (v) m/s

Position of Impactor (L) mm

Thickness of CFRP Layer (th) mm

Reinforcement

Steel bars

0.45

C1 C2 C3 C4 C5 C6 C7 C8 C9

5.2

1100

0.9 1.8

0.45

6.3

1100

0.9 1.8

0.45

0.9 1.8

6.3

550

0.45

C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24

0.9 1.8

8.5

1100

CFRP bars

0.45

5.2

1100

0.9 1.8

0.45

0.9 1.8

6.3

1100

0.45

6.3

550

0.9 1.8

0.45

8.5

1100

0.9 1.8

Table 7: Additional parametric study samples.

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