Method and device for producing concrete components

A process for producing concrete components in which carbon fibers prestressed by means of tensile stress or tensile-stressable fibers of at least one textile structure made of carbon fibers are embedded in a concrete matrix, wherein

• at least one textile structure comprising carbon fiber bundles (8) is laid in a mold (4), where
• the carbon fiber bundles (8) are inserted, in each case at a distance from one another, into two accommodation elements (1) which are arranged at two diametric end faces of the mold (4) and are arranged, supported or connectable on/to the end walls of the mold (4) through openings (3) so that hollow spaces within the accommodation element (1) are filled with a rapid-curing viscous composition having a mineral basis or a rapid-curing polymer and,
• after curing of the composition or of the polymer, tensile forces act in the longitudinal direction of the carbon fiber bundles (8) by means of a tensioning device (7) on one or both accommodation element(s) (1) at at least one end face and while the tensile forces are acting the interior of the mold (4) is subsequently filled completely with viscous concrete, and
• after curing of the concrete, the tensile forces of the prestressed carbon fiber bundles are largely transferred to the cured concrete and the concrete component is then removed from the mold and compressive forces are exerted perpendicular to the tensioning direction at at least two diametrically opposite sides of the accommodation element (1) during the filling of the hollow spaces in the accommodation element (1) and until after curing of the composition or of the polymer.