Issue 69

S. D. Raiyani et alii, Frattura ed Integrità Strutturale, 69 (2024) 71-88; DOI: 10.3221/IGF-ESIS.69.06

Figure 3: Test setup for tensile test on SSWM 40 × 32.

Figure 4: Stress-Strain curve of SSWM 40 × 32 and Bi-linear curve.

Figure 5: Bi-linear stress-strain curve for SSWM.

The composite used for strengthening concrete cylinders comprises Stainless Steel Wire Mesh (SSWM) and Sikadur 30LP bonding material. Kumar and Patel [21] considered MasterBrace 3500/4500 and Sikadur 30 LP epoxy for bonding SSWM on concrete surfaces. They found higher bond strength with Sikadur30LP as compared to MasterBrace 3500/4500. Further, no debonding of SSWM was observed with Sikadur30LP, and SSWM tore at maximum load. While SSWM was debonded from the concrete surface when MasterBrace 3500/4500 was used to apply SSWM on the concrete surface. So, for utilisation of the full tensile strength of SSWM without debonding from the concrete surface, the authors recommended the use of Sikadur 30 LP as an adhesive to bond SSWM on the concrete surface. Sikadur 30LP is an epoxy resin and hardener combination with a long pot life, does not shrink during hardening, and has good adhesion between SSWM and concrete surfaces [31]. The properties of Sikadur 30LP, as supplied by the manufacturer, are shown in Tab. 3. Before applying the SSWM composite to a concrete cylinder, conducting a bond test between the SSWM and the concrete surface is essential. The double shear lap bond test is used for this purpose, as reported by previous studies [21,25,26,27]. During the bond test,

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