摘要：The object of research is the interaction of the cement paste with siliceous aggregates and fillers that contain iron ions. Under normal conditions of hardening, mainly calcium hydrosilicates, CSH(B), CS2H and hydrogarnets are formed in the contact zone. One of the most problematic areas is the interaction of the hardening cement test from aluminosilicate and the iron silicate filler. At the same time, an increased amount of hydrosilicates of different degree of basicity, hydroaluminates, hydrogarnets with a different ratio of SiO2, Fe2O3, H2O appears in the contact zone.In the course of the study, a contact layer was studied, resulting from the interaction of the hardening cement dough with the surface of aggregates of the mixture, represented by an adhesive. This substance provides, in varying degrees, the adhesion of the aggregate to the overall monolith. Cement contributes to the restoration and extension of conventional hydration processes. This is due to the fact that the proposed method is an active way to strengthen the microdispersed material by introducing additional substances into the inorganic binders into the contact zone or into the cement paste.Thanks to this, it is possible to increase adhesion due to water accumulation, blockage of pores and cracks, increase in wettability and solubility of cement minerals, the emergence of new complex crystalline formations, and the like. Microfillers contribute to reducing deformation shrinkage and swelling, characteristic of hardening the highly dispersed clinker part of cement. They can also increase the resistance of the cement stone to the action of aggressive factors, reducing the consumption of cement and the cost of concrete.Thus, by various methods, the structure of the resulting substances based on inorganic binders can be regulated, influencing their properties in the desired directions.
关键词：cement paste;formation of hydrosilicates;interaction of cement stone with ferruginous silicates
