The MKT VMZ bonded expansion anchor is now also approved for use in steel fibre reinforced concrete (SFRC) and in ultra high performance (UHP) concrete up to C90/105. This significantly extends the range of applications covered by the European Technical Assessment (ETA-04/0092).
Thanks to its robust design, the VMZ bonded expansion anchor has been successfully used for many years in demanding infrastructure projects such as tunnels and bridges. For bonded expansion anchors, special conical rods are adhered into the concrete. Unlike conventional bonded anchors that use a threaded rod as the anchoring element, bonded expansion anchors do not experience a reduction in load capacity under sustained loads. This is a decisive advantage, especially for overhead and lateral installations with permanently acting tensile loads.
Infrastructure structures, however, often involve high-performance concrete, such as SFRC and/or UHPC concrete. These have long posed a challenge for designers seeking ETA-compliant fastening solutions. The extended ETA-04/0092 for the MKT VMZ now provides a safe and approved solution for these applications. The VMZ bonded expansion anchor is available in various steel types (zinc-plated steel, stainless steel A4, and HCR steel) and diameters (M8 to M24). In addition, a version with internal thread (M6 to M20) is available.
