Amirkabir University of Technology Amirkabir Journal of Civil Engineering 2588-297X 53 12 2022 02 20 Effect of different adsorbents in shear resistance of lead heavy metal contaminated soil Effect of different adsorbents in shear resistance of lead heavy metal contaminated soil 5357 5376 4207 10.22060/ceej.2020.18801.6965 FA Mohmmad Hossein Zade Civil Engineering Department, Imam Khomeini International University, Iran. Mahmuod Hassanlou Rad Civil Engineering department, Imam Khomeini International University, Iran. Seyed Abolhasan Naeini Department of geotechnical engineering, Engineering faculty, Imam khomeini international university, Qazvin, Iran Journal Article 2020 08 01 In the past few decades, the expansion of industrial areas and increasing the effluents has led to an increase in the contamination of heavy metals in soil and groundwater resources. Adsorption is one of the most important processes that affecting in the leakage of contamination. In this study, with triaxial tests, the behavior of mixed sandy clay (base composition) with 10% of different low plasticity (kaolinite and zeolite) and high plasticity (bentonite) adsorbents is studied in both contaminated and uncontaminated states. As the type of adsorbent mineral changed, the resistance parameters of contaminated soil show different trend. Increasing the concentration of lead in the soil with bentonite adsorbent, has led to form the flocculation structure and it causes shear strength and internal friction angle to increase about 18% than the uncontaminated state. Also, cohesion in compositions with low and high adsorbent increases and decreases by about 30% and 19%, respectively. In the past few decades, the expansion of industrial areas and increasing the effluents has led to an increase in the contamination of heavy metals in soil and groundwater resources. Adsorption is one of the most important processes that affecting in the leakage of contamination. In this study, with triaxial tests, the behavior of mixed sandy clay (base composition) with 10% of different low plasticity (kaolinite and zeolite) and high plasticity (bentonite) adsorbents is studied in both contaminated and uncontaminated states. As the type of adsorbent mineral changed, the resistance parameters of contaminated soil show different trend. Increasing the concentration of lead in the soil with bentonite adsorbent, has led to form the flocculation structure and it causes shear strength and internal friction angle to increase about 18% than the uncontaminated state. Also, cohesion in compositions with low and high adsorbent increases and decreases by about 30% and 19%, respectively. https://ceej.aut.ac.ir/article_4207_34b4f77aab1b72530e91d56a2971b0a1.pdf