Production, aspects in construction practice and concrete
technology
Dürnbach bridge pilot project – Germany’s first precast railway bridge made of UHPC, part 2
Conception and design of the railway bridge (Tegernsee-Bahn) in Dürnbach were reported in part 1 of the paper. Part 2 provides additional information on the production of the bridge at the precast plant and on the parameters in terms of concrete technology of the UHPC used.
The structural design of the prestressed and steel-fiber reinforced (2.5 Vol.-% of steel fibers, l/d = 12.7 mm/0.175 mm) precast concrete bridge resulted in a required strength class of C150/155 as well as an E modulus of approx. 48,000 /mm². The demanding requirements on the fresh concrete properties resulted from previous...
