2024 Volume 80 Issue 14 Article ID: 23-14002
During fatigue damage to the steel deck, fatigue cracks propagate starting from the U-rib welds. As a countermeasure against such fatigue damage, SFRC pavement construction is a standard construction method.
However, lane regulation is required and causes traffic congestion. Therefore, we are considering a reinforcement method using lightweight resin mortar filled in the U-ribs and CFRP molded material pasted between the U-ribs as a reinforcement method from the bottom of the steel deck slab. In this study, we performed a steel deck specimen with three U-ribs, filled the U-ribs with lightweight resin mortar, secondary injection of resin, and pasted CFRP molding material between the U-ribs. We confirmed the reinforcing effect. We also applied heat equivalent to that of goose asphalt pavement and confirmed changes in performance when affected by heat.
