Investigations of the processes of structure formation in concrete conditions on winter concreting

Hydrogen Sulphide in Industrial Enterprises Water Management Infrastructure - The Factor of Chemical and Microbiological Corrosion Concrete Degradation of Water Facilities

“…On objects of water management of the industrial enterprises the aggression of hydrogen sulfide is a factor of reliability and accident rate of objects, amplifies presence of other gaseous emissions [8][9][10]. So, at oil production the majority of the formations opened by the well contain in the structure a number of the components which are active in relation to cement stone [11]. One of the most aggressive components is hydrogen sulfide which amount can be from 3-5 to 20-25%.…”

“…And aggressive influence of hydrogen sulfide in relation to hydrate phases is strengthened by oxygen and hydrocarbons. Researchers consider the corrosion reason hydrosulphuric gas corrosion therefore presence of H2S demands the differentiated approach to the choice of composition of the tamponing mixes for increase in wellbore durability [10,11]. Now most of local and foreign experts show the mechanism of corrosion destruction of concrete in drainage pipelines as a result of biogenous sulphuric acid aggression -influence of the sulphuric acid formed on the arch by thionic bacteria [4,5,7,12].…”

“…Moskvin's classification). In concrete corrosion researches on objects of oil production the activating influence of oxygen on aggression of hydrogen sulfide in relation to concrete is also noted [11].…”