Concrete element and method for its production
AssigneeMETTEN Technologies GmbH & Co. KG
InventorsGuido Volmer, Michael Metten
Life of this patent
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Abstract
What is shown and described is a concrete element including a core concrete layer and a face concrete layer, the face concrete layer being obtained by compacting and hardening a mixture containing a latent hydraulic binder and/or a pozzolanic binder, water, a granular material and an alkaline hardener, with the granular material having, at a screen hole width of 2 mm, a through fraction from 35.5 wt. % to 99.5 wt. % and, at a screen hole width of 0.25 mm, a through fraction from 2.5 wt. % to 33.5 wt. %, each based on the total weight of the granular material.
Claims23
A concrete element comprising a core concrete layer and a face concrete layer, the face concrete layer being obtained by compacting and hardening a mixture containing:
- a latent hydraulic binder and/or a pozzolanic binder,
- water,
- a granular material, and
- 3 wt. % to 5 wt. % of an alkaline hardener, based on the total weight of the mixture, with the granular material having,
- at a screen hole width of 2 mm, a through fraction from 35.5 wt. % to 99.5 wt. %, and
- at a screen hole width of 0.25 mm, a through fraction from 2.5 wt. % to 8.5 wt. %,
- each based on the total weight of the granular material, and
- wherein the alkaline hardener is selected from the group consisting of alkali metal oxides, alkali metal hydroxides, alkali metal carbonates, alkali metal silicates, alkali metal aluminates and mixtures thereof.
Dependencies are inferred from the claim text.