ABSTRACT
Cracks in reinforced concrete members are almost unavoidable due to the low tensile strength of concrete, but are usually uncritical and limited in width by design at the serviceability limit state, so that durability and visual appearance are not impaired. However, crack spacing and crack width also influence the deformation behaviour as well as the shear strength, so that precise knowledge of the mechanical behaviour remains essential. In this article, models for the description of crack spacings are presented and discussed. This is followed by a validation based on experimental investigations carried out by the author and taken from the literature. Finally, the transferability of these models to textile reinforced concrete members is validated and modifications of the models are suggested.
