2025 Volume 81 Issue 14 Article ID: 24-14006
Permanent scaffolds made of GFRP are increasingly being installed to improve the efficiency of inspection and repair of bridges and overpasses. Permanent scaffolds are expected to be used as scaffolds for repainting, and it is necessary to understand their performance as scaffolds when the coating film or solvent burns off during the work.
In this study, the degree of decrease in material properties as a function of combustion temperature and time was confirmed by combustion tests using specimens, and the material properties after heating were examined by conducting heating tests assuming a fire. As a result, there was no change in the material properties of GFRP at 340°C. At 680°C, the surface on the flame side burned, but all of the 5-mm-thick plate did not burn after about 30 minutes of combustion, and it was confirmed that the material could hold a load that a worker could place on it when a loading test was conducted after combustion.