Application of radio waves in heating fresh concrete

Enhancing early or formwork stripping strength

CO2 emissions, energy costs and cement consumption in the precast industry can be lowered substantially with the aid of high-frequency heat treatment, an innovative procedure for the controlled heating of fresh concrete. This procedure generates a second internal heat source, alongside hydration heat, by employing radio wave technology (the operating principle is similar to that of microwaves) during the concrete curing process, thereby accelerating hardening considerably.

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Leipzig University of Applied Sciences Faculty of Civil Engineering 04251 Leipzig, Germany, T +49 341 3076 7025 detlef.schmidt@fb.htwk-leipzig.de, www.htwk-leipzig.de Helmholtz Centre for Environmental Research – UFZ Environmental Biotechnology Department Permoserstr. 15, 04318 Leipzig, Germany T +49 341 235 1762 ulf.roland@ufz.de, www.ufz.de

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