METHOD FOR STRENGTHENING AND PROTECTION OF OLD REINFORCED CONCRETE FOUNDATIONS, PILES AND STANDS OF ELECTRIC INSTALLATIONS FROM ENVIRONMENTAL IMPACTS Russian patent published in 2008 - IPC E02D27/08 

FIELD: construction.

SUBSTANCE: invention is attributed to methods for repairing, strengthening and protection from environmental harmful impacts of in-service reinforced concrete foundations, stands and piles used for equipment of switching stations and for intermediate or angle-tension towers of power lines, or building structures of buildings. Method for strengthening and protection of old reinforced concrete foundations, piles and stands of electrical installations form environmental impact consists in that steel protective casing including two semicylinders is created around existing disrupted reinforced concrete structure for the rest lifetime. Semicylinders have designed protection length in overground and underground zones and wall thickness providing intended lifetime for reinforced concrete structure with regard to galvanic influence thereon of reinforcement in concrete. Semicylinders are sealed together by welding. Side inner cavity formed between protective casing and old reinforced concrete structure is filled with old structural concrete or other compound. In upper overground part, waterproof plug with atmospheric covering is installed, underground part of protective casing being used as natural earth lead for electric installation.

EFFECT: improvement of reinforced concrete structure fastness to environmental impacts.