| Popis: |
The authors consider the problem of maintenance of buildings and structures of architectural merit. Expedient resolution of this problem consists in the application of a mineral hydraulic binder that has a particularly fine, gradually and smoothly changing granulometric composition and explicit and steady chemical and mineral composition. The above binder is recovered as a result of the air separation of Portland cement. The above binder comprises Portland clinker, furnace slag, and regulator of hardening and mineral additives of R-X, R-U, and R-F brands. The authors have also analyzed the characteristics of several brands and their physical and mechanical properties. Injection-based stabilization of soils and structures is performed through the application of finely dispersed binders used as water suspensions. The choice of binder brands applicable to concrete and masonry structures that have damages of different nature is based on their granulometric composition. The authors have proven that injections of suspensions are to be made at a low pressure with a view to the filling of the porous space of the medium. The practical data obtained by the authors has proven that impregnation of soils both improves their bearing capacity and converts them into structural elements. Application of finely dispersed binders improves impervious properties of strengthened massifs and their resistance to various aggressive actions, as well as their curing at negative temperatures, rate of strength development, etc. |
