PSI - Issue 28

Haya H. Mhanna et al. / Procedia Structural Integrity 28 (2020) 811–819 Mhanna et al./ Structural Integrity Procedia 00 (2020) 000–000

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anchored with CFRP anchors, as shown in Fig. 2. The anchors had an embedment depth of 85 mm, fan length of 100 mm, inclination angle of 25°, and fan width of 100 mm as shown in Fig. 3. All anchors parameters were kept constant except for the anchor diameter. The diameters investigated in this study are 12, 14 and 16 mm and the corresponding beam’s designations are BSD12, BSD14 and BSD16, respectively. It should be noted that the drilled holes were 2 mm more than the dowel diameter to allow impregnation of epoxy, except for the 16 mm dowel diameters that were inserted in 20 mm hole diameters due to availability of drill bits.

Fig. 2. Front view of strengthened specimens. (a) unanchored specimen; (b) anchored specimen.

Fig. 3. Cross-section of strengthened specimens. (a) unanchored specimen; (b) anchored specimen.

3.3. Material properties Concrete compressive strength was determined by performing compressive tests on concrete cubes at the time of testing. The average cylindrical concrete compressive strength ( f’ c ) was found to be 45.90 MPa. In addition, the steel bars used for longitudinal and transverse reinforcement had yield stress and elastic modulus of 460 MPa and 200 GPa,