Two New Methods for Establishing Simple Yet Durable Connection System for Precast Elements

The application of precast concrete members has been on the rise due to their advantages including rapid construction, quality assurance, and higher safety. These elements must be connected onsite to realize fully their advantage. Current connection systems for prefabricated elements have shortcomings, including susceptibility to corrosion, complexity of their application, and inspection of the finished product. Also, for the case of unforeseen connection necessitated by the site condition, they may be unable to develop the required strength. This study introduces two novel methods for splicing precast concrete members that are simple, corrosion-resistant, and can be applied rapidly. The new methods utilize near surface mounted fiber reinforced polymer (NSM FRP) and FRP sheet/jacket splice systems for connecting the precast elements. The capacity of the proposed splices to develop the required strengths in compression, tension, and bending was investigated according to several design specifications. The results of this study show that the proposed systems satisfy design requirements. This study is expected to enhance durability of precast structures and hence expand their use in future construction.