Maintenance and upgrade of structural concrete components with carbon

Figure: HPS

In the pultrusion process, roving strands with 24,000 (24k) individual filaments each are pulled through a resin bath and hardened in an oven

Figure: HPS

Figure: HPS, Sika

A standard, 50 mm wide and 1.2 mm thick laminate consists of approximately 1.2 million carbon filaments, each with a diameter of 1/6,000 mm

Figure: HPS, Sika

Figure: HPS

A test program was assigned to the Leipzig Materials Research and Testing Institute that specifically dealt with the “Temperature Behavior of CFRP Laminates Installed Underneath Mastic Asphalt” or “Traffic load in car parks with thin concrete cover”

Figure: HPS

Installation of temporary anchors for reinforcement by subsequent prestressing

Figure: HPS

Carbon reinforcements were applied to structural components of the Haus der Kulturen der Welt und Kongresshalle (HKW) in Berlin

Figure: HPS

Parts of the structural framework of the Burda-Hochhaus in Offenbach were also strengthened using this method

Figure: HPS

A cooling tower was reinforced with carbon fabric insertation in Eisenhüttenstadt, eastern Brandenburg

Figure: HPS

Fabric reinforcements are also suitable for natural stone and historic buildings, as shown in this example at the Neues Museum Berlin with high modulus CFRP laminates on cast steel beams

Figure: HPS

2,200 m of laminates were bonded in a period of less than four weeks in the Kaufhof department store building at Mönckebergstrasse, Hamburg

Figure: HPS

Figure: HPS, Sika

The bending resistance of the 120 m long Fährbrücke at Lake Zurich had to be increased without altering the height of the superstructure

Figure: HPS, Sika

Figure: HPS

The highway bridge near Montabaur was reinforced at the top and bottom of its frame decking and on the front sides of its enclosing walls

Figure: HPS

Figure: HPS, LAP

Each of the webs of the Körschtalbrücke on the B27 Federal Road in Stuttgart-Möhringen was brigded with five CFRP tendons installed above the coupling joint

Figure: HPS, LAP

Dipl.-Ing. Dr. rer. pol. Horst Peters

Compared to demolition and new construction, the approach of maintaining and upgrading buildings and structures is becoming increasingly important. Extremely lightweight carbon fiber laminates improve the structural capacity of reinforced concrete components.

Compared to demolition and new construction, the approach of maintaining and upgrading buildings and structures is becoming increasingly important. Various repair and rehabilitation methods exist to improve the structural capacity of reinforced concrete components, including the application of shotcrete with supplementary reinforcement, the insertion of additional concrete steel into slots milled into the concrete specifically for this purpose, and the addition of a concrete topping to create a new compression zone. All of these methods are associated with a high degree of soiling whilst...