Výstavba betonových konstrukcí pomocí 3D tisku (aditivní robotické fabrikace) patří nepochybně k nadějným stavebním technologiím budoucnosti. Pokud je navíc pro tisk použita směs ultra vysokohodnotného betonu (UHPC) s dostatečnou dávkou ocelových mikrovláken, otevírá se potenciál výroby velmi subtilních nosných konstrukcí s vysokou duktilitou.
3D tisk UHPC s ocelovými mikrovlákny
3D PRINTING OF UHPC WITH STEEL MICROFIBRES:
INFLUENCE OF SPECIMEN THICKNESS AND ORIENTATION ON FLEXURAL STRENGTH
The production of concrete structures using 3D printing (robotic additive manufacturing) is clearly one of the most promising construction technologies of the future. In addition, if a mixture of ultra-high-performance concrete (UHPC) with a sufficient amount of steel microfibres is used for printing it opens up the potential to produce very slender structures with high ductility. Following the results of research on the basic mechanical properties of 3D printed UHPC published by the authors last year, this paper presents the results of a new series of experiments focusing on the flexural response of thin members. Special attention is focused on parameters that are generally considered to have an influence on the final flexural strength.