THE INFLUENCE OF ACTIVE MICROSILICA ADDITIVE ON BINDING PROPERTIES OF ALKALINE ACTIVATION

The world experience of implementation and the uniqueness building alkaline composites prove prospects relevance development clinker-free technology. formulations activation binders based on fine powders aluminosilicate nature will allow obtaining new effective high-quality products. paper investigates effect active microsilica kinetics strength gain, changes in density pore space cement stone, formulation technological factors hardening conditions. chemical transformations silica under conditions, leading to pH value, have been substantiated. By electron microscopy, foundations formation structure a stone binding bond "aspiration dust (60%) - clinker (40%) Na2SiO3" amorphous substance, calcium sulfoaluminates, hydroaluminates are developed. According authors, research results important for construction industry, since proposed cements can replace expensive energy-intensive Portland cement, making it possible create strong durable concrete reinforced structures