WATERPROOF AND DRAINAGE TECHNOLOGIES FOR HYBRID STRUCTURES—WATER INTRUSION MODE AND COUNTERMEASURES—

Abstract

 This report summarizes the technologies for waterproofing and drainage of composite structures combining steel and concrete. It can be said that water intrusion is an important issue in the maintenance of composite structures. Here, we focused on bridges among composite structures, and investigated the current status of technology related to waterproofing and drainage, and examined the mechanism elucidation through tests. In the current state of technology survey, we mainly conducted a survey based on literature, summarized the drainage technology used for floor slabs, and introduced a measurement method using electromagnetic wave radar, which has been attracting attention in recent years. In addition, several tests have been conducted on the corrosion of the triple contact point, which is the interface between steel and concrete, in order to elucidate the mechanism, and the results of these tests have been reported.