ПОВЫШЕНИЕ ЭКСПЛУАТАЦИОННЫХ СВОЙСТВ КОМПОЗИЦИОННОГО ФОСФОГИПСОВОГО ВЯЖУЩЕГО ИЗ АЛЬФА-МОДИФИКАЦИИ ПОЛУГИДРАТА СУЛЬФАТА КАЛЬЦИЯ

Аннотация

Objects of research: high-strength composite fosfogipsovye binding a-modification increased water resistance, obtained in an autoclave in the presence of phosphogypsum sanding lime, portland cement, slag or clcktrotcrmofosfornogo bclite clinker and additives controls the crystallization process. Purpose: to develop formulations and optimization technology for high-strength composite fosfogipsovogo binding а-modification increased water resistance on the basis of phosphogypsum sanding "Ammophos-Maxam" by hydrothermal treatment in an autoclave fosfogipsovoy pulp in the presence of various hydraulic additives. Methods of research: modem physico-chemical, chemical and physico-mcchanical (X-ray analysis, DTA, microscopic) methods of analysis and standard testing methods of gypsum binders. The results obtained and their novelty: the compositions arc designed and optimized for high-technology for composite fosfogipsovogo binding a-modification of sanding phosphogypsum and hydraulic additives under hydrothermal treatment in an autoclave with the introduction of the regulators of the crystallization process. The mechanism and developed a way to eliminate passivation of impurities P2O5 and fluorine contained in phosphogypsum, by linking them to practically insoluble compounds. Found that the introduction of lime, portland cement, slag or clcktrotcrmofosfomyh bclite clinker promotes the formation of calcium and hydro nizkoosnovnyh tobermoritopodobnyh phases, semi-aquatic gypsum crystals screening, whereby increased strength and water resistance fosfogipsovogo binder. Practical significance: designed HsCFA increased water resistance can be used in exterior and interior of buildings instead of expensive Portland cement, as well as for the manufacture of building products and designs. It is established that these binders arc durable, stable both in air and in water, alternate drying and water saturation, freezing and thawing. The degree of implementation and economic efficiency: a pilot-industrial batch HsCFA increased water resistance, held his trial, made the product. Get a real economic effect UZS 33480 /1. Applications: construction materials, the construction industry.