HARDENED CONCRETE AND FRESH CONCRETE FOR PRODUCING HARDENED CONCRETE AND USE OF A CONCRETE FOR PRODUCING A STRUCTURAL COMPONENT WITH A HIGH TEMPERATURE RESISTANCE

摘要

The invention relates to hardened concrete, in particular a concrete structural component, comprising a mixture of between 10.0 wt. % and 25.0 wt. %, (without taking into account any reinforcement), of set hydraulic and/or latent hydraulic binding agents, e.g. Portland cement, blast-furnace cement or similar, between 75.0 wt. % and 90.0 wt. %, (without taking into account any reinforcement), aggregates, fibres, in particular thermoplastic fibres, polymers, cellulose, paper or similar, optionally liquefiers, dispersants or similar, and optionally reinforcement, whereby the sum of the aggregates corresponds to the following chemical composition: Mg0 25.0 to 50.0 wt. %, in particular 30.0 to 40.0 wt. %; Si02 30.0 to 55.0 wt. %, in particular 40.0 to 45.0 wt. %; Fe203 5.0 to 15.0 wt. %; Cr203 1.0 wt. % max.; Al203 1.0 wt. % max.; free Si02 in the form of quartz 5.0 wt. % max., in particular 1.0 wt. % max.; admixtures residual amount and 0.3 to 3.0 wt. % fibres, in particular 0.4 to 1.0 wt. %.