Formwork technologies for curved textile reinforced concrete elements

A state-of-the-art review and outlook

After about a century of successful construction with reinforced concrete, textile reinforced concrete (TRC) was developed at the beginning of the new century. The development and market entry are supported by the high strength, mechanical properties, corrosion resistance of the reinforcement material, the resulting thin walls and mate- rial savings. TRC thus follows the technical and economic trends of resource conservation and lightweight construction. In the building industry, the shell construction method is not new. As early as the 1930s, more and more work was done with components that functioned both architecturally and mechanically by curving or folding. The special feature of shells is that they combine the load-bearing effects of slabs and discs and thus can be loaded both vertically and in plane. With the introduction of textile concrete, this trend is experiencing a renaissance with structural forms that would otherwise be inconceivable today due to the high cost of reinforced concrete structures. In particular, the use of double-curved concrete structural members is versatile. For example, these components can serve as load-bearing systems, sound and fire protection or as decorative elements. [1]

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