Chemical prestressing of folded and shell shaped carbon-reinforced concrete (C06)

• Subject Area: Structural Engineering, Building Informatics and Construction Operation
• Term: since 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 417002380

The primary goal of the project is to develop a method for prestressing folded and shell-shaped carbon reinforced concrete structures in order to achieve higher stiffness and reduced cracking or crack width. An expansion agent is added to the cement, which leads to a positive volume change within the concrete, which generates tensile stress in the carbon reinforcement through the bond. This technique avoids unfavorable strong transverse pressure on the reinforcement and prestresses the reinforcement grid very evenly. Curved or folded geometries in particular can be prestressed very easily using chemical prestressing.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 280: Design Strategies for Material-Minimised Carbon Reinforced Concrete Structures—Principles of a New Approach to Construction
• Applicant Institution: Technische Universität Dresden
• Project Head: Professor Dr.-Ing. Steffen Marx