Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 53 2 2021 04 21 Effect of Lead Nitrate on the Behavior and Shear Strength Parameters of clayey sand Effect of Lead Nitrate on the Behavior and Shear Strength Parameters of clayey sand 575 588 3497 10.22060/ceej.2019.16146.6142 FA Mahmoud Hassanlourad Mohmmad Hossein Zade Civil Engineering Department, Imam Khomeini International University, Iran. Seyed Abolhassan Naeini Civil Engineering department, Imam Khomeini International University, Iran Journal Article 2019 04 16 <strong>By the </strong><strong>expansion of the industrial zones, heavy metals enter the environment, which contaminates the soil and groundwater. The leakage of heavy metals such as lead, zinc, copper, etc. is not only an environmental crisis but also</strong><strong> causes changes in soil shear resistance parameters. In this research, with triaxial tests, the behavior of sandy soils with different percentages of kaolinite in two cases of non-contaminated and contaminated with lead is investigated. It was seen that b</strong><strong>y increasing the lead concentration, the hydrogen bonding between kaolinite particles and </strong><strong>the resistance of contaminated soils reduces.</strong> <strong>Then, to investigate the effect of clay minerals on contaminated soils, the shear resistance parameters of soil with kaolinite and bentonite clay were compared. The results showed, clay minerals in contaminated soils, resulted in different shear behavior and resistance parameters, so that, increasing the lead concentration in bentonite causes the shear strength to increase.</strong> <strong>By the </strong><strong>expansion of the industrial zones, heavy metals enter the environment, which contaminates the soil and groundwater. The leakage of heavy metals such as lead, zinc, copper, etc. is not only an environmental crisis but also</strong><strong> causes changes in soil shear resistance parameters. In this research, with triaxial tests, the behavior of sandy soils with different percentages of kaolinite in two cases of non-contaminated and contaminated with lead is investigated. It was seen that b</strong><strong>y increasing the lead concentration, the hydrogen bonding between kaolinite particles and </strong><strong>the resistance of contaminated soils reduces.</strong> <strong>Then, to investigate the effect of clay minerals on contaminated soils, the shear resistance parameters of soil with kaolinite and bentonite clay were compared. The results showed, clay minerals in contaminated soils, resulted in different shear behavior and resistance parameters, so that, increasing the lead concentration in bentonite causes the shear strength to increase.</strong> https://ceej.aut.ac.ir/article_3497_7535bbb91c8fde347ad861f293126633.pdf