Fibre reinforced autoclaved aerated concrete studied by computed tomography

The production process of fibre reinforced autoclaved aerated concrete results in a preferential orientation of the fibres. The fibre orientation largely influences the strength and the deformation behaviour of this building material, therefore information on the fibre orientation is highly desirable. Computed tomography measurements allow for the non destructive investigation of the material. A sufficiently high contrast between fibres and concrete matrix offers the determination of the fibre orientation in different ways. Even glass fibres satisfy this condition. Furthermore, for a better understanding of the development of the fibre arrangement during the foaming process of the concrete, digital radiography was used to study the evolution of orientation in situ.