Material Mechanical Properties Necessary for the Structural Intervention of Concrete Structures  

作　　者：Tamon Ueda 

机构地区：[1]Faculty of Engineering,Hokkaido University,Sapporo 060-8628,Japan [2]College of Civil and Transportation Engineering,Shenzhen University,Shenzhen 518060,China

出　　处：《Engineering》2019年第6期1131-1138,共8页工程（英文）

摘　　要：Structural intervention involves the restoration and/or upgrading of the mechanical performances of structures. In addition to concrete and steel, which are typical materials for concrete structures, various ber-reinforced polymers (FRPs), cementitious materials with bers, polymers, and adhesives are often applied for structural intervention. In order to predict structural performance, it is necessary to develop a generic method that is applicable to not only to steel, but also to other materials. Such a generic model could provide information on the mechanical properties required to improve the structural performance. External bonding, which is a typical scheme for structural intervention, is not applied for new structures. It is necessary to clarify material properties and structural details in order to achieve better bonding strength at the interface between the substrate concrete and an externally bonded material. This paper presents the mechanical properties of substrate concrete and relevant intervention material for the fol- lowing purposes: ① to achieve better shear strength and ultimate deformation of a member after struc- tural intervention;and ② to achieve better debonding strength for external bonding. This paper concludes that some of the mechanical properties and structural details for intervention materials that are necessary for improvement in mechanical performance in structures with structural intervention are new, and differ from those of structures without intervention. For example, high strength and stiff- ness are important properties for materials in structures without structural intervention, whereas high fracturing strain and low stiffness are important properties for structural intervention materials.

关 键 词：Structural intervention High fracturing strain No yielding Low stiffness ROUGHNESS Fiber-reinforced polymer Polymers 

分 类 号：TG1[金属学及工艺—金属学]