METHOD FOR THE PRODUCTION OF BUILDING MATERIALS AND BUILDING PRODUCTS MANUFACTURED THEREBY

摘要

A method for the production of an additive for building materials, wherein a hidrophobization agent is mixed with a solvent and the resulting emulsion is applied to quicklime, and then the material obtained is hydrated by adding water, wherein the hidrophobization agent is an oil having a dry matter content of 3 to 50 % by weight, the quicklime in a quantity of 60 to 96 % by weight is soaked with a quantity of 4 to 40 % by weight of the mixture of the oil and the solvent, and after dying of the hydrated material a foaming agent is admixed thereto in a quantity of 0.25 to 0.6 part by weight of the foaming agent, preferably sodium bicarbonate, to one part by weight of the hydrated material. By using this additive, a binder comprising an additive is produced so that a hydraulic binding component and/or an isocyanate based binding component are/is added to the additive in a quantity of 4.8 to 14.8 parts by weight of the binding component to one part by weight of the additive. By using the binder comprising an additive, a building material is produced so that an expansion material is added to the binder comprising an additive in a proportion of 2 to 12 units by volume of the expansion material to one unit by volume of the binder comprising an additive, and the material obtained is mixed with added water to a homogenous consistency, then left or made to solidify. The building material according to the invention is preferably a heat- insulating plaster or lightweight concrete, or it can be a heat-insulating building element (3) or an auxiliary construction element.