Konev O. The effect of excess negative charges of leakage current on cracking of concrete and reinforced concrete structures

oobject - cement stone, concrete, leakage currents and excessive electrical charges; goal - to identify the mechanism of internal stresses and cracks in concrete and reinforced concrete structures from the effects of excessive negative electrical charge caused by current leakage from the rail track and taking steps to increase fracture toughness structures;methods - analytical, physical, chemical, mathematical, statistical;novelty - of cracking in concrete structures depending on the concrete structure under the action of excess negative charges; the mechanism of concrete cracking under the influence of excess negative charge, which is what this charge is a lot of pressure repulsion between particles and gel globules which shall be electro-heterogeneous contacts of kristallari frame, breaking it; of experimental studies to determine the causes of cracks and found that the main factor is the leakage current of the rail track, which causes polarization of concrete and reinforced concrete structures and occurrence in zones with excessive negative electric charge; the results - drafted and executed pilot restoration of concrete support high passenger platform stopping point Vodiyne Southern Railway to the protection of its penetration and accumulation of excess charge it.Developed comprehensive guidelines to protect structures from passenger platforms , electro-corrosion under the influence of excess charge leakage current of a rail track in t. h. by means of waterproofing layer and protective steel trough grounded screen; the scope of use - design, construction, reconstruction and restoration of buildings and engineering structures for railway Ukraine and other countries.