Monday, November 25, 2013

Corrosion of metals in the environment conditions as a result of chemical or electrochemical reacti

What is Corrosion? | Construction Blog
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Corrosion of metals in the environment conditions as a result of chemical or electrochemical reaction is corruption. Corrosion of words in our language have come from foreign cgi lebanon va languages are Turkish, corrosion, rot, rust, deterioration, and as new words with the same meaning. In the construction sector, corrosion, rust and strength of the reinforcement is to lose its status.
Colloquially known as rust, corrosion, electro-chemical cgi lebanon va effects as a result of the loss of mass is formed cgi lebanon va in the material. When first poured concrete, reinforcement, wrapping protects against corrosion. High alkaline environment of concrete, reinforcing steel corrosion by forming a film and adheres firmly cgi lebanon va to prevail. However, once vibration, shock, factors such as mechanical fatigue and external conditions concrete, due to microscopic cracks are formed and gradually grew damp, non-ambient cgi lebanon va corrosive substances and gases, CO2, air, flue and exhaust gases to cause leakage. The corrosive effect of this leak and reasons such as oxygen corrode reinforcement cross-section is reduced and the strength decreases. The components of the concrete, the reaction leads. Such internal corrosion events may cause corrosion of the reinforcement. The resulting corrosion, increasing cgi lebanon va the volume of iron, can cause cracks cgi lebanon va in the concrete. Corrosion, particularly moisture to be effective exterior, roof underneath and in the basements, bridges, viaducts, dams, such as water structures, near the sea, flue and exhaust gases are concentrated in areas where industrial pollution areas that are experiencing and the salty sea sand is used in buildings are seen.
Corrosion cgi lebanon va caused cgi lebanon va by the material undergoes changes unsolicited material and in terms of health damage is caused. In recent years, economic cgi lebanon va and social research on corrosion winning great importance is increasing. As a result of research in Turkey corrosion losses of GDP 4.36% has been shown to be equivalent. DIE 2000, according to figures from the R & D expenditure as a share of GDP is 0.64% ~ Given the importance of the subject is clearly visible. In reinforced concrete structures, the damage caused by corrosion damage and the size of the budget should be allocated for the repair of the importance of measures cgi lebanon va to be taken to corrosion reveals. (CONCRETE IN STRUCTURE DAMAGE DETECTION AND MEASUREMENT METHODS CORROSION - Nabi Floating)
As a result of the research of the world's annual corrosion loss of around $ 4.4 trillion, Turkey's total loss was determined to be around $ 45.6 billion. in the United States resulting from corrosion of steel has a value close to $ 70 billion in annual losses. Corrosion is not just the economy, the health is threatened. In the world with 14 million tons of iron and steel corroded by many to be the first place people live the life endangering. (Nationality)
Steel usually oxygen and water, which are subject to corrosion in any environment. Corrosion rate varies depending upon the environment. For example, the speed of water, the alkalinity or acidity, metals by the action of the increase in the temperature or aeration, cgi lebanon va certain bacteria or other effect may be increased depending on certain factors. To be pure substances are factors that accelerate corrosion. If protective layers are used to retard corrosion.
Quality concrete and steel use, according cgi lebanon va to the rules concreting and maintenance, concrete, additives, type of corrosion inhibitors used, adequate drainage, ensuring adequate Spacers, deposition of suitable curing construction, cgi lebanon va water / cement ratio is appropriate, waterproofing done, protective cgi lebanon va coatings used (eg: epoxy) are the main measures to be taken against corrosion.
Paint is one of the measures to be taken against corrosion. Because helps prevent contact with air. Although this is very slow times fails. However, foreign substances on the surface prior to application of paint (oil, rust, grease, oxide layer, etc.) must be removed. Otherwise unobtainable full contact with paint surfaces and long-term protection of not expected. In addition, the use of appropriate alloys still is a precaution that can be taken against corrosion.
Corroded concrete, cleaned, modified patch with quality concrete, corroded reinforcement welding, corrosion of exposed structure cleaning up, taking the necessary measures be insulated, corrosion repair can be made after the applications.
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