Lastivka O. Modified concrete based on alkaline slag Portland cement for in-situ construction

Object of study - methods of control of structure formation processes of alkaline slag Portland cement and concretes on their based in towards improving their efficiency and processability for used in-situ construction. Subject of study - concrete based of alkaline slag Portland cement for in-situ construction. The purpose of research - getting modified concrete based on alkaline slag Portland cement in a wide range of its composition with ensuring compliance technological features use in-situ construction. Methods of research - modern methods of physical-chemical analysis; statistic methods of experiment planning. Innovation - theoretically grounded and experimentally proved the possibility of improving the efficiency of alkali slag Portland cement in concrete for in-situ construction, which provide in regulating rheological properties of fresh concrete and performance concrete through the use of chemical admixtures and their complex, the nature of which is determined by the composition of the cement; disclosed the features of hydration processes and structure of alkaline slag Portland cement with different phases of calcium sulfate and founded a positive effect of CaSO4o0,5H2O, which determined to extend the setting time and increasing the activity of cement due to the sequence of development processes towards the formation AFt-phase, calcium hydrosilicate and pectolite.