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Significance and Use
5.1 The resistivity of the surrounding soil environment is a factor in the corrosion of underground structures. High resistivity soils are generally not as corrosive as low resistivity soils. The resistivity of the soil is one of many factors that influence the service life of a buried structure. Soil resistivity may affect the material selection and the location of a structure.5
5.3 The test method is focused to provide an accurate, expeditious measurement of soil resistivity to assist in the determination of a soil’s corrosive nature. Test Method G57 emphasizes an in situ measurement commonly utilized in the design of a buried structures’ corrosion control (cathodic protection systems’ ground bed design, and so forth). The two-electrode soil box method often compliments the four-pin, in situ soil resistivity method.
1.1 This test method covers the equipment and procedures for the measurement of soil resistivity, for samples removed from the ground, for use in the assessment and control of corrosion of buried structures.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1193 Specification for Reagent Water
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
G57 Test Method for Field Measurement of Soil Resistivity Using the Wenner Four-Electrode Method
UNS StandardsUNSDesignationS30400 UNSDesignationS31600
ICS Number Code 13.080.99 (Other standards related to soil quality)
UNSPSC Code 41114604(Corrosion testers)