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Corrosion of reinforced concrete infrastructure is the principal cause of failures and consequently lost in construction industry. Marine environment is known as a very aggressive environment due to salts transported by the breeze is deposited over metallic materials surfaces and provoke their corrosion. Reinforced concrete specimens elaborated with water/cement ratios 0.45 and 0.65 were exposed to tropical marine environment at Campeche, Mexico, 300 m to coastline. In closeness, a thermoelectric plant is located, which releases sulfur dioxide, this pollutant reacts with humidity and generate acid depositions. Meteorological variables as temperature, relative humidity, precipitation, wind direction as well as chloride and sulfur dioxide concentration in atmosphere were monitored seven years to relate their contribution to concrete deterioration. Besides, electrochemical parameters as half-cell potential, corrosion rate and electrical resistivity were measured. Results show that in spite of high relative humidity, temperature and humectation time, chloride and sulfur dioxide concentration, the corrosion process, determined by electrochemical techniques, have not started. Good properties of specimens are attributed to excellent quality of materials utilized and correct dosage used to elaborate them, which provide them durability. [ABSTRACT FROM AUTHOR]