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8755141 
Journal Article 
Impacts of lead nitrate contamination on the geotechnical properties of clayey soil 
Karkush, MO; Ali, SD 
2020 
15 
2 
1032-1045 
English 
Increasing the demand for using brownfields and to achieve sustainable development of reusing brownfields, it's important to study the impacts of contamination on the geotechnical properties of soil. The main aim of this work is studying the impacts of lead nitrate contamination on the geotechnical properties of clayey soil. The soil samples were obtained from the site of the Al-Ahdab oil field in the east of Iraq. The soil samples were contaminated artificially with three concentrations of lead nitrate (6666.67, 13333.33, and 20000) ppm. The contaminant solution consists of lead nitrate and 10 litres of distilled water was added to the intact soil. The soil sample remains soaked with the contaminant solution for one month. The chemical, physical, and mechanical properties of intact and contaminated soil samples were measured to investigate the effects of lead nitrate on these properties. The lead nitrate causes decreasing the percentage of particles having the size of clay (5.4 to 24.3%), Atterberg's limits, permeability (19.3 to 42.2%), and optimum water content of the soil (14.4 to 21.3%). In addition, the coefficient of consolidation and shear strength parameters of soil were decreased after contamination. Also, the specific gravity, maximum dry unit weight, initial void ratio, compression index, and recompression index were increased with increasing the concentration of lead nitrate in the soil by 1.5-3.3%, 2.5-4.9%, 2.9-13.5%, 89-195%, and 18.2-39.4% respectively. © 2020 School of Engineering, Taylor's University. 
Cohesive soil; Geotechnical properties; Lead nitrate; Soil contamination