Structural design with flowable concrete

Flowability is a characteristic of concrete with a high workability in the fresh state. In order to achieve flowability the mix design can be considerably different compared to vibrated concrete. Not only the production technique has to be adapted to the higher flowability, but the flow can also cause local differences in material behaviour. With deviating mix design, constitutive laws and provisions related to the structural behaviour established for VC might no longer be applicable. This paper discusses the progress of fib TG 4.3, a Task Group that aims at facilitating the use of innovative flowable materials for the design of concrete structures by providing a state-of-the-art report and recommendations for the structural design with flowable concrete.