Hilti Aktiengesellschaft

Universitat Kassel

Alexander Wetzel

Bernhard Middendorf

Maik Feldmann

Hans-Peter Heim

Ekkehard Fehling

Philipp Krooss

Thomas Niendorf

Werner Seim

Tim Schade

Ralf Urs Giesen

Michael Hartung

Kevin Klier

Viola Sauer

Siemon Piotrowski

A multi-component inorganic capsule anchoring system can be used for chemically fastening anchors, bolts, screw anchors, screw bolts, and post-installed reinforcing bars in mineral substrates. The multi-component inorganic capsule anchoring system contains a curable powdery ground-granulated blast-furnace slag-based component A, and an initiator component B in aqueous-phase for initiating a curing process. The powdery ground-granulated blast-furnace slag-based component A contains further silica dust. The component B contains an alkali-silicate component and optionally a plasticizer.

Multi-component inorganic capsule anchoring system based on ground-granulated blast-furnace slag

A method is provided for producing a microfiber-reinforced high-strength concrete, comprising a cement matrix with a microfiber addition. The fiber elements have a shape-memory alloy. The method has at least the following steps: training a fiber shape of the fiber elements at a temperature above a transition temperature, wherein the fiber shape allows the fiber elements to latch; cooling the trained fiber elements; plastically deforming the fiber elements from the trained fiber shape into an intermediate form by means of which the fiber elements are prevented from latching; introducing the fiber elements into the cement matrix in order to form a fresh concrete; and casting the fresh concrete and heating the fresh concrete to the transition temperature such that the fiber elements reform into the fiber shape, thereby latching the fiber elements. The invention additionally relates to a microfiber-reinforced concrete which is produced using such a method.

Microfiber-reinforced high-strength concrete

Growing community of inventors

Guxhagen, Germany

Alexander Wetzel