What is the aim of a soil resistivity test?

The aim of a soil resistivity test is to measure the electrical resistance of soil, which is crucial for assessing the potential for corrosion of underground structures, such as pipelines and foundations. The resistivity of soil is influenced by factors such as moisture content, temperature, soil texture, and salinity. By evaluating soil resistivity, engineers and environmental scientists can make informed decisions regarding material selection, corrosion protection measures, and the overall longevity of structures in contact with soil.

This measurement is particularly important in civil engineering and construction, where it's imperative to anticipate how electrical currents may interact with buried structures, thereby mitigating risks associated with corrosion damage. The other options focus on different attributes of soil such as elasticity, texture, and compaction, which are unrelated to the principles underlying resistivity testing.