Textile concrete: how it is obtained and what are the applications

The concrete textiles, reinforced with textile fibers , alkali-resistant glass, carbon, aramid, made of synthetic material with a regular orientation, shows great potential for use Having regard to the strong bond that is established between the ‘ textile reinforcement and the fluid self-compacting cementitious matrix, characterized by fine granulometry, which ensures an excellent face and high durability. With translucent concrete and organic concrete, textile concrete represents a trend of topical experimentation.

The filaments, gathered in bundles called yarns (which can be glued with resins or spray powders to make them work together), have a diameter of 10 to 30 μm. From the yarns we obtain the technical fabrics, among which we can distinguish the multiaxial ones, the 3D fabrics and the tubular fabrics, which are used as reinforcement. The studies conducted so far have shown the impossibility of making all the filaments of a fiber bundle resistant to loads; the resistance of the structure is entrusted to those in contact with the matrix.

The absence of a concrete cover to protect against corrosion leads to the possibility of reducing thickness and weight ; for construction elements we speak of thicknesses of 10-20 mm.

How to get it: the production process

The textile concrete is obtained by placing layers of cement conglomerate and textile reinforcement on a continuous belt, which are then leveled, obtaining flat components.

The technology developed by the Fraunhofer-Instituts für Produktionstechnik und Automatisierung IPA experiments with the semi-continuous production of profiles with a continuous cycle processing system.

The fixing of the textile reinforcement in the formwork is also being tested, as is the study on the junction of the elements, which present vulnerability on the edges. These are the research guidelines to further improve the quality of this new and very interesting material.

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