Gypsum composites reinforcement

Wide distribution of gypsum materials and products, that contributes mainly to their good consumer properties and capacity of forming the most comfortable environment requires the increase in their technical parameters, mainly of mechanical and operational ones. Modern studies of gypsum bindings focus mostly on higher strength, water resistance, lower density and longer life. Existing method of improving the properties of gypsum bindings consists in wide use of mineral and organic modifiers capable of influencing various formation layers of gypsum stone structure. Multilayer reinforcement of composites can form the structure for modified stone of enhanced crack resistance. Reinforcement at atomic-molecular level is the most attractive, as most of known methods of modification with carbonic fullerenes complicate the technology, increase labor and energy expenditures, and, as a result, the price of articles. Reinforced dihydrate calcium sulphate contributes to stronger structure of composite high-strength bindings and improving their mechanical properties, which is achievable through the use of a mineral modifying complex and selecting of a grain composition. Studies were made to understand how reinforcing mineral complex influences physical-mechanical properties of gypsum composite. It should be mentioned that samples based on gypsum binary mixture of optimum granulometry with an additive are stronger than gypsum mixes without additives. Use of mineral modifier contributes to changing in crystal morphology and forming stronger structure of gypsum stone, and this is confirmed by microstructural analysis of reinforced composite. Results obtained prove that modified gypsum composites may be used in making gypsum materials and articles of high strength.