DEVELOPMENT OF MEASURES FOR THE PROTECTION OF STRUCTURES OF RAILWAY TRANSPORT AGAINST ELECTROCORROSION UNDER ACTION OF ALTERNATING CURRENT LEAKAGE AND HIGH-VOLTAGE TENSION
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 182, Issue 16
Abstract
The destructive effects of the corrosive effects of stray and leakage currents are observed in almost all industries. The question is the most relevant for the railways. It is known that direct (DC) leakage currents and stray currents cause significant corrosion damage. It is supposed that corrosion from alternating current exposure is more moderate and does not cause significant damage. However, the analysis of literature data, data of theoretical, experimental and exploitative research indicates a significant destructive effect of alternating leakage current and high voltage on the structures of railway facilities in Ukraine. At the same time, measures to prevent electrocorrosion of reinforced concrete and other structures by alternating current are not provided for in the regulatory documents for railway structures. One of the reasons for this is the specificity of the processes of electro-corrosion of concrete, reinforced concrete and mortar in flooded structures. All existed methods of protection against electro-corrosion do not take into account the real mechanism of corrosion destruction of non-metallic parts of the structure. Based on this, it became necessary to develop schemes and constructive solutions for the protection of railway structures against electrocorrosion caused by alternating current, based on the fundamental principles of colloidal chemistry and physico-chemical mechanics. Developed measures and constructive solutions for the protection of concrete, reinforced concrete and stone engineering structures of railways from electrocorrosion caused by alternating high-voltage and leakage currents: solid steel screen with a deep grounding; mesh screens at the bottom of the supports with deep grounding; liquid glass screen with deep grounding. The effectiveness of the developed measures is caused by taking into account the actual mechanism of destruction of steel reinforcement and concrete structures.
Authors and Affiliations
Olga Borziak, Oleksii Dudin, Maksym Kutsenko, Victoria Poznyakova
Keywords
Related Articles
- EP ID EP536196
- DOI 10.18664/1994-7852.182.2018.159746
- Views 48
- Downloads 0
ANALYSIS OF THE INFLUENCE OF AN ABSOLUTE ACCELERATION ON THE SPEED OF MOVEMENT OF PASSENGER TRAINS
Increasing the speed of traffic on existing lines with minimal costs is one of the main tasks that exist today on the Belarusian Railways. The nearest high-speed prospect is 160 km/h. Often the existing curves of small r...
METHOD FOR CALCULATING REINFABRICATED REINFORCED CONCRETE LINING OF A PRESSURE HYDRAULIC TUNNEL
The analysis of structural features and operating conditions of the prefabricated reinforced concrete lining of a pressure hydraulic tunnel was carried out. The requirements to be met by the elements of the lining in que...
HYDRATION OF PORTLAND CEMENT WITH THE ADDITION OF HIGHLY DISPERSED CHALK
The effect of the addition of highly disperse chalk on the hydration processes of Portland cement has been studied. The possibility of interaction reactions is confirmed by thermodynamic calculations. Calculated the amou...
FUNDAMENTAL SOLUTIONS ABOVE EQUATIONS OF THE PARAMETRIC OSCILLATIONS
We define the fundamental solution of the Mathieu equation for zero setting a and arbitrary parameters q using the method of direct integration. Along with the original Mathieu equation is considered tantamount to his...
EFFECT OF PHOSPHOGYPSUS TO THE SLAG BINDER ACTIVITY
The ecological problem of utilization of metallurgical slags is shown. As a result of the analytical review of literature sources, there are varieties and tonnage of slags in Ukraine, their chemical composition, data on...