UHFB-Overlay auf Fuß- und Radwegbrücke Karl-Heine-Bogen in Leipzig

UHPFRC overlay on foot and bicycle path bridge Karl Heine Arch in Leipzig, Germany. During a regular inspection of a pedestrian and bicycle bridge over the Karl Heine canal, leaks were detected in the waterproofing layer made of a thin layer of reaction resin. To ensure long-term durability, the old waterproofing layer was removed and replaced with an ultra-high-performance fiber-reinforced concrete (UHPFRC) with a thickness of 30 mm. The new layer has only a waterproofing function. The resulting increase in load-bearing capacity was not considered. Because of the possible risk of damages for bicycle tires, flexible PVA plastic fibers were used instead of rigid steel fibers. On an area of approximately 160 m ², 6.5 m ³ of UHFB were casted within one day.