Effect of Lead Nitrate on the Behavior and Shear Strength Parameters of clayey sand

Document Type : Research Article

Authors

1 Civil Engineering Department, Imam Khomeini International University, Iran.

2 Civil Engineering department, Imam Khomeini International University, Iran

Abstract

By the 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 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 by increasing the lead concentration, the hydrogen bonding between kaolinite particles and the resistance of contaminated soils reduces. 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.

Keywords

Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 53, Issue 2
May 2021
Pages 575-588

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