Naslov
Comparison of soil properties measurements in pipeline corrosion estimation

Autori
Marušić, Katarina ; Kekez, Krešimir ; Martinez, Sanja

Izvornik
Materials and corrosion (0947-5117) 70 (2019); 1700-1707

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Soil resistivity ; Soil corrosivity ; Wenner 4-pin method ; Polarization method

Sažetak
Soil corrosion is a hazardous electrochemical process that affects buried metals in contact with soil. Corrosion in soils resembles atmospheric corrosion with corrosion rates usually higher and depending on the soil type. There are numerous properties of soil and thus soils can be classified in many different ways. Soil resistivity is one of the main indicators of soil corrosivity and thus of the hazardous impact the soil has on metal materials in soil environment, although it is not the only parameter affecting the risk of corrosion damage. In this work on-site measurements and laboratory measurements of soil characteristics are performed and compared. On- site measurements include measuring the redox potential and soil resistivity by Wenner 4-pin method, while the measurements in laboratory include measuring soil conductivity, as well as moisture content, pH, content of sulphates, chlorides and sulfides and polarization measurements, which give the most accurate results. The measurements have shown that if the Wenner 4- pin method is performed in a convenient way the obtained results are not precise but can give an indicative picture of the corrosivity of the observed soil.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija, Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

POVEZANOST RADA