由于生产技术发展,设备更新,往往导致既有工业厂房和设施的承力结构需要加强。也有建筑结构于交付使用后可能出现未预料到的荷载作用,因而必须补救加强。出现这种情况如果是钢结构,采取栓接、铆接或电焊予以加强,是比较容易,但钢筋混凝土建筑则比较困难。自从合成树脂胶粘技术及喷混凝土技术得到发展,实际应用日趋成熟,使钢筋凝混土结构使用胶粘贴附方法, Due to the development of production technology and the renewal of equipment, the bearing structure of existing industrial plants and facilities often needs to be strengthened. There may also be unexpected loading effects of the building structure after it is put into use, so it is necessary to remedy and strengthen it. If this is the case, it is easier to use bolting, riveting or welding to reinforce steel structures, but reinforced concrete structures are more difficult. Since the development of synthetic resin adhesive technology and sprayed concrete technology, the practical application has become more and more mature.