Experimental Test of Reinforced Timber of FRCM-PBO with Pull-Off Adhesion Method

The article describes the results of pull-off adhesion strength of the FRCM-PBO (Fiber Reinforced Cementitious Matrix-p-Phenylene benzobis oxazole) composite adhered to the epoxy resin layer which is the connector with the timber beam. In addition, this paper shows the results of the tests of resistance to pull-off the epoxy resin layer from the pine beam. The tests were carried out based on the Polish Standard PN-EN 1542. The Pearson linear correlation analysis was also carried out in order to determine the correlation between the obtained results and the destructive forces. The factors that occurred during the test that may affect its results, such as the method of applying the bursting force, surface preparation of the tested elements and the types of substrate destruction, were also characterized. The experimental data show that in all the tested samples, non-initial adhesive destruction between the adhesive layer and the disc was observed.

Automated summary

This study focused on the pull-off adhesion strength of FRCM-PBO composite and epoxy resin layer in connection with timber beams, revealing non-initial adhesive destruction in all tested samples. Factors affecting test results were analyzed, including the method of applying bursting force and types of substrate destruction.