Methodology for validating measurement systems of soil compaction

This paper presents methodology for validation of soil compaction measuring devices based on cone index, allowing procedures such as: i) comparison between equipment, ii) analyzes of accuracy and iii) repeatability, important parameters in the validation of measurement instruments. The methodology consists in using soil samples with a particular compaction discretized from the height of the mold used, and the variable compression stress. In addition to measuring quality of the data acquisition the methodology is able to promote evaluation of the influence of factors such as moisture, clay content and pH on the soil compaction.