نوع مقاله : مقاله کامل پژوهشی
نویسندگان
1 استادیار دانشگاه هرمزگان
2 استادیار دانشگاه هرمزگان- گروه مهندسی عمران، دانشکده فنی مهندسی، هرمزگان، ایران
3 کارشناس ارشد ژئوتکنیک- گروه مهندسی عمران، دانشکده فنی مهندسی، هرمزگان، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The expansion of oil-dependent industries has caused a growing rate of oil extraction, resulting in an increase in oil- and its derivatives-contaminated water and soil. In this study, different amounts of crude oil with dry intensities of 0%, 2%, 5%, 15%, 20%, and 30% were added to marl soil, and the effects of crude oil pollution on the geotechnical properties and environmental geotechnical of the marl soil were examined using various geotechnical (unconfined compressive strength, Slake Durability, Atterberg limits, and permeability), chemical (pH and EC), and microstructural (XRD and SEM) experiments. The research findings revealed that marl soil demonstrated durability against Slake Durability in the presence of organic crude oil. As the concentration of the organic crude oil pollution increased to 15% and 30%, the permeability coefficient decreased by 13% and 22%, respectively. The pH value did not show a significant effect as the concentration of organic crude oil pollution increased. Furthermore, electronic conductivity (EC) reduced as the marl soil became more contaminated with oil. The liquid limit of marl soil was 53%, which increased to 70% when the crude oil pollutant reached 30%. The plastic limit also increased upward with increasing the crude oil pollutant. A 30% increase in oil pollutant caused the plastic limit to increase from 28 to 38%. As crude oil pollutants increased, the marl soil changed its behavior by classifying clay soil of high plasticity property (CH) into silt soil of high plasticity property (MH).
کلیدواژه‌ها [English]
)