Innovative technology for the manufacture of textile reinforcements for concrete: Fid-Bau Portal

Innovative technology for the manufacture of textile reinforcements for concrete

Köckritz, U. / Hausding, J. / Engler, T. / Cherif, C.

The design of stitch bonded multiaxial multi-plies for reinforcing concrete depends on the specific usage. A key feature is the shape accuracy of the open grid structure, characterized among other things by the bending, displacement and shear properties. This is one key reason for a subsequent stabilization step, the coating process. The coating device integrated in the production process is influenced by a number of factors such as material, structure and manufacturing properties. By determining these factors it is possible to ensure the reproducible shape accuracy of the textile reinforcement. A new pattern device for stitch bonding machines based on the shifting of the warping needles has been developed. The integration of a structural stabilization protcess as modular line concept into the multiaxial stitch bonding machine enhances the utilization of mechanical properties and handling of open grid stitch bonded fabrics. Extensive experimental investigations set the basis for the development and manufacturing of textile fabrics with structural properties adjusted to the requirements of the intended application. The development of the needle shift technology for stitch bonding machines will offer additional advantages compared to conventional stitch bonded structures and other textile fabrics. The principle of needle shifting sets the basis for the development of symmetric layer structures and placing stitching yarn around the warp threads which may have an influence on the performance of textile reinforced concrete.