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在工程结构中,有时由于设计、施工或改变使用功能等原因,构件需要加固。砼构件的外部粘钢加固,在国内是近年来发展起来的。它较过去的一些方法有许多优点。我国自1983年由大连化物所参照法国“西卡杜尔-31~#”胶研制成功国产JGN型结构胶粘剂之后,数年中,有关部门对砼构件的加固修复达数百处之多。1990年9月25日国家以CECS:90颁布了包含〈构件外部粘钢加固法〉在内的《砼结构加固技术规范》,
In the engineering structure, components are sometimes reinforced due to design, construction, or changes in the use of functions. The external steel reinforcement of concrete components has been developed in China in recent years. It has many advantages over some previous methods. Since China developed the domestically-proven JGN-type structural adhesive with reference to the French “West Kadur-31~#” adhesive from the Dalian Institute of Materials in 1983, in several years, the departments concerned had repaired and repaired the rammed components up to several hundred. On September 25, 1990, the state promulgated the “Technical Specification for Reinforcing Concrete Structures,” which includes the “Structural Reinforcement Method for External Components of Concrete Structures,” in accordance with CECS:90.