Additives for water-hardening binding agents
AssigneeSKW Trostberg Aktiengesellschaft
InventorsAlois Aignesberger, Jean-Pierre Deppen, Hans-Gunter Rosenbauer
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Abstract
Water-hardening binding agent such as concrete, mortar, cement and the like are modified with a solid additive in the form of aggregates consisting of fine particle having a grain size of from 0.1 to 10 mm, preferably in pelletized or pressed grain form. These additives have an adjustable rate of dissolution and permit controlling the speed and manner of hardening of said water-hardening binding agent.
Claims13
Solid additive for modifying water-hardening binding agents, which additive comprises aggregates consisting of mechanically compressed fine particles with a grain size of from 0.1 to 10 mm and being composed of an agent consisting of a naphthalenesulphonic acid derivative-formaldehyde condensate, a resin based on an amino-s-triazine with at least two NH.sub.2 groups and modified with sulphite or sulphonic acid, a sulphite- or sulfonic acid-modified melamine-formaldehyde polycondensate, a copolymer based on styrene and acrylonitrile, a lignin sulfonate, or a phenol-sulphonic acid-formaldehyde polycondensation product.
Dependencies are inferred from the claim text.