Rezistența La Coroziune Nitrică a Unor Mortare Speciale Cu Conținut Ridicat De Zgură Nitric Corrosion Resistance of Special Mortars with High Slag Content (original) (raw)

Constructions composed of mortars and cement concretes are exposed to advanced nitrate ion corrosion processes if they are used in aggressive mediums, specific to nitrogen fertilizer industry. The paper aims at tracking down the behavior of cement mortars with a high content of slag (75%) exposed to nitrate ion corrosion as well as carrying out a analysis that might reveal the time evolution of mechanical strength of the standard mortar samples or of those containing slag, when they are submerged in various aggressive solutions. Corrosive agents, acting on the above mentioned items are in particular nitrogen oxides and ammonia gas. These compounds are found in considerable amounts in the atmospheric feature of this type of industry and their effect is intensified by an accidental increase of humidity, temperature, or steam, or unexhausted corrosive gases accompanied, possibly, by inadequate ventilation. The analysis of complex chemical processes enables the highlighting of the influ...