PSI - Issue 68

Maha Assad et al. / Procedia Structural Integrity 68 (2025) 252–258 M. Assad et al. / Structural Integrity Procedia 00 (2025) 000–000

254

3

Strain gauges were mounted at midspan on the top concrete, bottom steel reinforcement, and CFRP sheet to monitor strains during the test.

Fig. 1: Design details of the RC beams

(a)

(b)

(c) Fig. 2: Anchors’ configuration in the anchored beams: (a) Beams anchored with vertical anchor; (b) Beams anchored with inclined anchors; (c) Bottom view of the anchored specimens

Table 1. Test matrix.

Specimen’s designation

Anchor’s diameter

Embedment depth

Fan length

Insertion angle

UA *

-

-

-

-

A14-90 A14-45 A20-90 A20-45

14 14 20 20

100 100 100 100

180 180 260 260

90º

135º

90º

135º

* UA: Unanchored

2.2. Material properties Compressive strength of concrete was tested in accordance with ASTM C39/C39M-21 standards (ASTM, 2021). The average compressive strength of concrete was 45 MPa. Steel reinforcement had a yield strength of 568 MPa. The CFRP sheets consisted of high strength unidirectional CFRP material (V-Wrap™ C200HM-N), with an elastic