C4R made by thyssenkrupp Carbon Components is a reinforcement bar that consists of corrosion-resistant high-strength carbon fibers, which are embedded in high-temperature-resistant special epoxy resin.
In an industrial process, the bars are manufactured continuously with an optimized groove-helix design. In addition to the significantly higher tensile strength compared to reinforcing steel, C4R stands out by a significant mass saving of up to 80% compared to its steel equivalent. Moreover, the bond stress achieves top values, which were determined in a concrete pull-out procedure and are significantly higher than comparable fiber-reinforced reinforcement bars.
The interdisciplinary C³ – Carbon Concrete Composite project is one of ten projects supported by the German ministry for education and research programme „Zwanzig20 – Partnerschaft für Innovation“(“Twenty20 – Partnership for Innovation”) through the initiative „Unternehmen der Region“ (“Regional Companies”). The technical university of Dresden provides the chair, while a consortium of 160 partners from the research, business and associational sector come together to develop a material compound of carbon fibre and high performance concrete. thyssenkrupp Carbon Components has been part of the C³-network from the beginning and is continuously involved in the research and development of carbon concrete.
