Concrete columns, as the main load-bearing structures in buildings, are one of the main components of various buildings. With the increase of service years of buildings, the durability of columns decreases and the strength and stiffness of columns are insufficient due to the defects or the constant changes of load and environment. The failure of concrete columns is sudden and easy to cause accidents. Therefore, it is necessary to pay attention to the state of concrete columns and reinforce the defective columns.

Today, we talk more about steel jacketing of the column by perfusion adhesive.

You can see the video, Horse Construction spent a lot of money and time make it. You can learn more from the video.

Link: https://www.horseen.com/Horse-Construction-video/Structural-Strengthening-Adhesive-Steel-Jacketing

If you are not convenient to watch our video, you can also read the text.

1.1 Original structure clean

Remove surface coating until concrete surface appear. Make it clear and sound.

1.2 Surface treatment

Grinding surface smooth and chamfer angles. 

1.3 Structure repair

Repair and level concrete defects with repairing adhesive.

1.4 Position&paying off

Locate the set out according to the drawing. 

1.5 Steel treatment

Grind and roughen adhering of angle bar and batten plate. 

1.6 Steel skeleton install

Install gasket, clamp steel skeleton with special fixtures. Leave 2 to 3 mm gap between steel skeleton and original member. 

1.7 Batten plate weld

Weld batten plate and steel skeleton, weld should be straight, uniform, no virtual welding, leakage welding. 

1.8 Position&drill,embed injection device

Embed injection nozzle and exhaust hole according to design. 

1.9 Crack seal

Seal gaps between angle bars and batten plates with horse crack repair adhesive.

1.10 Air pressure test

After crack repair adhesive is cured, test pressure with air and if there is leak, seal it in time. 

1.11Adhesive mix

Mix the horse structural perfusion adhesive according to the ratio. Mix and stir evenly avoid bubbles, do not mix too much adhesive once to avoid waste.

1.12 Perfusion application

Inject horse perfusion adhesive via injection nozzles, with low pressure. Stop injecting when the adhesive appears in the near exhaust hole. Seal the exhaust hole and keep injecting adhesive with low pressure for 10 minutes. After adhesive is cured, remove injection devices and extra adhesive. 

1.13 Curing maintenance

72 hours curing and maintenance time is needed after injection construction. 

1.14 Quality inspection

Check if there is hollowness after adhesive is cured. 

1.15 Protection treatment

Finally apply anti-corruption and anti-fire coating.