{"id":1224,"date":"2024-08-13T13:42:32","date_gmt":"2024-08-13T11:42:32","guid":{"rendered":"https:\/\/www.invator.se\/projekt\/carbon-fiber-reinforcement-of-rough-concrete-columns\/"},"modified":"2025-06-04T08:38:55","modified_gmt":"2025-06-04T06:38:55","slug":"carbon-fiber-reinforcement-of-rough-concrete-columns","status":"publish","type":"projekt","link":"https:\/\/www.invator.se\/en\/projekt\/carbon-fiber-reinforcement-of-rough-concrete-columns\/","title":{"rendered":"Carbon fiber reinforcement of rough concrete columns"},"content":{"rendered":"\n

Problem statement<\/h2>\n\n

In an industrial building, the existing 40-year-old concrete columns showed extensive damage. The damage was due to a combination of corrosion and overloading. In addition, it was not possible to shut down operations for more than 2-3 days at a time. In total, about 35-40 columns will be reinforced over a 20-year period. <\/p>\n\n

Outcome<\/h2>\n\n

About 20 columns with the dimension 600x600x5000 mm have been reinforced with surrounding carbon fiber fabric. In total, between 5-10 layers of fabric were applied. The reinforcement of the first pillars was done around 2010 and continues annually according to plan. Approximately 4-5 pillars are reinforced each year and the project is planned to be completed around 2027-2028. The result is successful and instructive where, among other things, early shortcomings in the execution of the reinforcement have led to improvements over time. The environment is very aggressive with temperatures of 50-60 C and humidity above 90% RH. <\/p>\n\n

Solution<\/h2>\n\n

After carrying out a standard condition assessment and performing load-bearing calculations of the columns, carbon fiber fabric reinforcement was designed. The work was carried out in the following steps: <\/p>\n\n

Preparatory work<\/h3>\n\n