Issue 61

K. K. Espoir et alii, Frattura ed Integrità Strutturale, 61 (2022) 437-460; DOI: 10.3221/IGF-ESIS.61.29

65.77 68.67 66.59 60.21 63.12 65.82 66.42 65.29

427.47 446.31 432.80 391.33 410.24 427.79 366.70 359.35

95.67 84.30 98.78 98.87 96.03 98.64 96.65 96.23

621.80 567.40 642.01 642.60 637.40 628.10 628.10 625.44

24.65 29.68 14.33 21.65 27.83 16.59 22.41 26.09

Fracture

Ⅴ -14-2d Ⅴ -14-3d Ⅵ -14-1d Ⅵ -14-2d Ⅵ -14-3d Ⅶ -14-1d Ⅶ -14-2d Ⅶ -14-3d

Pullout

Fracture Fracture

Pullout

Fracture Fracture

Pullout

Table 4: Summary of test results

Position-based impact of grouting defects Based on the experimental results, defects impacted the tensile performance of the connection differently based on their location and size. The impact of defects based on size has been widely investigated. Thus, in this work, the leading variable in assessing the impact of defects is their location. The performance indices are limited to ultimate tensile load, failure mode, and displacement. The load-displacement curves in Fig. 6 are plotted to supplement the data in Tab. 4 to enlighten the following discussion using a case by case analysis on the impact of defects based on their location.

(a) I specimen L-D curve

III-1d III-2d III-3d

II-1d II-2d II-3d

100

100

80

80

60

60

40

40

Force (KN)

Force (KN)

20

20

0

0

0

10

20

30

40

50

60

0

10

20

30

40

50

60

Displacement (mm)

Displacement (mm)

(c) III specimen L-D curve

(b) II specimen L-D curve

444