In situations soil resistivity measurement is used to determine the aggressiveness of the soil. CORROCONT provides both the “Wenner four pin method” and the “Electromagnetic method”. Soil corrosivity evaluation is based on NACE and BS classification.
Soil electrical resistivity indicates the relative capability of the soil to conduct electrical current and it is a main indicator in determining corrosiveness of the soil. This is generally considered as the most significant soil characteristics with regard to corrosivity of the soil. Soil resistivity can change dramatically with moisture content. Soil, which has a high resistivity when it is dry, can have substantially lower resistivity when it is wet or saturated depending on factors such as pH and chemical content.