Designing of Soil-Concretes Using the Kursk Magnetic Anomaly Technogenic Raw and Waste-Lime-Based Binder for Reinforcing of Road Pavements Subgrades

The classification of technogenic raw materials according to the extent of their transformation in the process of technogenesis is developed; the efficient fields of using of mechanogenic waste from Lebedinsky mining complex of Kursk magnetic anomaly with account of its technogenic transformation extent have been determined. The mechanism of formation of technogenic raw microstructure is suggested, which implies microstructure self-organizing that consists in regeneration (spontaneous recovery) of the initial coagulative and crystallizational microstructure, destroyed by mechanical impacts. The compositions of soil-lime mixture on the basis of clay technogenic raw material of KMA (loose strip) are developed for stabilizing the subgrades of road pavements. Also the influence of two-component soil-lime mixture: lime-containing binder and cement is studied on the total value of yield compressive strength. An empirical mathematical model of soil-concrete strength development process is suggested, which allows solving the problems of designing mixture with required strength of soil-concrete. The character of interrelation between the initial technogenic raw material microstructure and microstructure formation processes in soil-concrete has been determined. It is considered the kinetics of microstructure formation of soil-concretes based on clay and sand technogenic raw materials,as well as strength characteristics development of soil-concretes in time are studied.

Hali tarjima qilinmagan