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Repair and reinforcement of Sundholmen bridge - 15 bridge columns - Nørresundby N, Denmark

Sundholmen bridge

Structural reinforcement

Repair and reinforcement of Sundholmen bridge - 15 bridge columns - Nørresundby N, Denmark

Accelerated cracking and spalling on 15 bridge columns.

Topic 
Repair and reinforcement of Sundholmen bridge
Object 
15 bridge columns
City 
Nørresundby N
State 
Nordjyllang
Country 
Denmark
Date 
2017
Duration 
3 Months

Situation

The causes of damage were assessed to be due to ASR (Alkaline Silica Reaction) resulting in corrosion, spalling and lack of reinforcement in existing column structures.

The solution was to utilise S&P C-Sheet 240 as carbon fibre reinforcement, with prior injection of cracks and reprofiling where there was spalling.

The columns were sandblasted and cleaned down before wrapping the columns with 2 and respectively 3 layers of S&P C-Sheet 240 (carbon fibre fabric). By wrapping the column with carbon fibre fabric, what is known as confinement of the concrete is created.

The whole project was completed in just 8-9 weeks without any lane closures on the E45 under the bridge. The speed limit during the installation was reduced by 10km/h for work safety reasons. 

 

Material

Application of S&P C-Sheet 240 and S&P Resicem HP

Image Gallery

  • Cracks and spalling on bridge columns at Sundholmen

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