COMPOSITION FOR MANUFACTURING LIGHT CONCRETE, METHOD OF PREPARING COMPOSITION FOR LIGHT CONCRETE MANUFACTURING AND METHOD OF LIGHT CONCRETE MANUFACTURING (VERSIONS) Russian patent published in 2015 - IPC C04B20/10 C04B38/08 C04B40/00 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to the production of construction materials, namely to a composition for light concrete manufacturing, a method of preparing the composition for light concrete manufacturing and methods of manufacturing light constructive-heat-insulating concrete products. The composition for light concrete manufacturing contains, wt %: Portland cement 45-50, GRES ash microspheres 30-40, reinforcing filler 0.5-11.0, water - the remaining part, with the GRES ash microspheres and reinforcing filler being activated to a cement clinker. The method of preparing the composition for manufacturing light concrete includes the introduction of the reinforcing filler into Portland cement in the form of inorganic disoriented fibres and mixing until a homogeneous mixture is obtained, introduction of the GRES ash microspheres, the surface of which is preliminarily activated to the cement clinker, and the obtained mixture is tempered with water or water with a plasticising additive C3. The method includes the activation of the surface of the GRES ash microspheres by the application of a finishing agent or chemical processing. The method of light concrete manufacturing, obtained by mixing Portland cement, GRES ash microspheres and water consists in the following: the GRES ash microspheres, the surface of which is preliminarily activated to the Portland cement clinker, are preliminarily introduced into Portland cement, the mixture is tempered with water, with the application of the preliminarily activated to Portland cement clinker reinforcing filler in the form of oriented fibres in the formation of light cement, introduction of the oriented fibres is realised layer-by-layer in the process of moulding, which is carried out by layer-by-layer vibrocompacting with the further mixture exposure at 100% humidity. The invention is developed in independent and dependent claims of the invention formula.

EFFECT: obtaining constructive-heat-insulating and constructive-fire-resistant light concrete with an increased strength and with reduced moisture-absorption.

9 cl, 7 ex, 3 tbl