초록 ▼

The application concerns a water and fire resistant building material consisting of a layered, shaped and hardened composition of one or more absorbant components, magnesia cement, chemically active fumed silica, alkali silicate, one or several inorganic fillers, one or several lignin sulphonates, e

The application concerns a water and fire resistant building material consisting of a layered, shaped and hardened composition of one or more absorbant components, magnesia cement, chemically active fumed silica, alkali silicate, one or several inorganic fillers, one or several lignin sulphonates, eventually ethyl silicate, whereby the final product is built up of a two binder system, one consisting of fumed silica, alkali silicate and possibly magnesium oxide and the other consisting of magnesia cement and a lignin sulphonate salt. The application also concerns the method of producing the product. The procedure is characterized by forming a dual layered binder system and by having a very short press time.

대표청구항 ▼

Water and fire resistant building material characterized by a composition built up in individual layers and then shaped and hardened said layers each including at least one component selected from the group consisting of an absorbent component, magnesia cement, one or more lignin sulfonate, and chem

Water and fire resistant building material characterized by a composition built up in individual layers and then shaped and hardened said layers each including at least one component selected from the group consisting of an absorbent component, magnesia cement, one or more lignin sulfonate, and chemically active fumed silica, and an alkali silicate being present in at least one layer, whereby after hardening, the final composition includes two binder systems, one consisting of said water resistant magnesia cement and lignin sulfonate, and the other consisting of the reaction product between said chemically reactive fumed silica, magnesium oxide and alkali silicate.