Changing the Atterberg’ s Limits and Water Retention Characteristics of a Loess Soil Containing Montmorillonite Nanoclay

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Darvish Ayuri Zahra; EBRAHIMI SOHEILA; MOVAHEDI NAEENI SEYED ALIREZA; ZAKERINIA MEHDI

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Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2021 | Volume:11 | Issue:1 Page(s): 1-12

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Title

Changing the Atterberg’ s Limits and Water Retention Characteristics of a Loess Soil Containing Montmorillonite Nanoclay

Author(s)

Darvish Ayuri Zahra | EBRAHIMI SOHEILA | MOVAHEDI NAEENI SEYED ALIREZA | ZAKERINIA MEHDI | Issue Writer Certificate

Keywords

LoessesQ2

NanoclayQ1

Soil water retention curveQ2

Atterberg limitQ2

Plasticity indexQ1

Abstract

Soil improvement in loess soils, due to susceptibility to erosion, can increase strength, resistance and change or modify their mechanical properties. The purpose of this study was to investigate the changes in soil moisture curve parameters and some mechanical indices of loamy sand soils containing montmorillonite Nanoclay. Thus, soil water retention was investigated by applying 1 and 5% of Nanoclay and water holding capacity in soil was investigated by VanGenukhten and Brooks-Corey models. Then mechanical properties of soil were investigated by measuring Atterberg limits and how they change. Both experiments were re-evaluated over time. Nanoclay had a significant effect on water retention in various moisture suction systems and increased volumetric moisture content, especially in low suction. It also increased the fine porosity at the air entry value, indicating a decrease in the rate of water drainage from soil and increased its storage capacity in losses soil. Increasing the amount of Nanoclay led to an increase in Θ s, but the change in Θ r was not significant. As Nanoclay increased, α and n parameters decreased, respectively. Predicting the parameters of the moisture curve equation using the VanGenukhten model showed better results. Liquid and plasticity limits of the soil also increased. However, the increase in the amount of liquid limit was higher and the soil Plasticity index increased. The increase in the surface area and the ability to maintain water by the clays and their shear strength can be due to this fact. Monitoring of atterberg and moisture curve parameters over time indicated their persistence.

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APA: Copy

Darvish Ayuri, Zahra, EBRAHIMI, SOHEILA, MOVAHEDI NAEENI, SEYED ALIREZA, & ZAKERINIA, MEHDI. (2021). Changing the Atterberg’ s Limits and Water Retention Characteristics of a Loess Soil Containing Montmorillonite Nanoclay. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 11(1 ), 1-12. SID. https://sid.ir/paper/411539/en

Vancouver: Copy

Darvish Ayuri Zahra, EBRAHIMI SOHEILA, MOVAHEDI NAEENI SEYED ALIREZA, ZAKERINIA MEHDI. Changing the Atterberg’ s Limits and Water Retention Characteristics of a Loess Soil Containing Montmorillonite Nanoclay. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2021;11(1 ):1-12. Available from: https://sid.ir/paper/411539/en

IEEE: Copy

Zahra Darvish Ayuri, SOHEILA EBRAHIMI, SEYED ALIREZA MOVAHEDI NAEENI, and MEHDI ZAKERINIA, “Changing the Atterberg’ s Limits and Water Retention Characteristics of a Loess Soil Containing Montmorillonite Nanoclay,” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 11, no. 1 , pp. 1–12, 2021, [Online]. Available: https://sid.ir/paper/411539/en

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