This paper presents the influences of chemical characteristics on soil compaction measurements through electrical conductivity in geotechnical investigations. The particle shape of soils, soil moisture contents and presence of chemical properties influence electrical conductivity of soil. The presence of organic materials and waste materials in soil effects on the soil compaction characteristics. In this study, soil compaction estimation with electrical resistivity is shown including chemical characterizations in the soil of geotechnical engineering. In addition, soil resistivity measurements with moisture contents and conventional laboratory test of determining bulk density and dry density are conducted in this research. The pH value of soil sample is also taken to obtain the chemical characterizations of soil. The results of the study are shown as the experimental observations in soil compaction monitoring of chemical contaminated soil through electrical conductivity. The research is crucial for the study of soil compaction determination including chemical characterizations through electrical signal in geotechnical engineering.