Performance Evaluation of a Highway Slope on Expansive Soil in Mississippi

Khan, Mohammad Sadik; Nobahar, Masoud; Stroud, Mike; Ferguson, S.; Ivoke, John

doi:10.1061/(asce)gm.1943-5622.0002240

Cited by 13 publications

(2 citation statements)

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“…When encountering water again, the soil sample still exhibits significant swelling characteristics. Some studies showed that montmorillonite loses interlayer bound water between 100 ℃ and 200 ℃, while illite removes adsorbed water and interlayer water before 300 ℃ (Mohammad et al, 2022;Inna et al, 2022). In this experiment, the temperature of the soil sample heated at a power of 2 kW for 10 minutes was only 268 ℃.…”

Section: Discussionmentioning

confidence: 74%

“…Changes in soil moisture conditions can lead to significant changes in its volume change (Abbas et al, 2022), which could cause damages for foundations, slopes, tunnels, etc. (Liu et al, 2022;Mohammad et al, 2022;Sarker and Wang, 2022). Scholars proposed different methods to reduce the expansion potential of these soils such as by adding cement, lime, fly ash and other materials into the soil to improve (Nalbantoğlu, 2004;Seco et al, 2011;Al-Taie et al, 2020;Barman and Dash, 2022;Sahoo and Singh, 2022;Soltani et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Improvement of expansive soil by microwave irradiation

Yao

2024

AGG

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This paper presents an experimental investigation of the use of microwave irradiation to improve the characteristics of expansive soils. The expansive soil samples were subjected to microwave heating in an industrial microwave oven, and were followed by analysis of the soil characteristics such as the specific gravity, liquid and plastic limit, free swelling ratio, vertical free swelling strain and swelling pressure. X-ray diffraction was also used to determine the mineral composition of the samples. Experimental results showed that the microwave irradiation induces both a rapid increase in the soil temperature and a significant change in the soil mineral content. With the increase in the power level, we observed first an increase in the specific gravity up to a peak, which was followed by a decrease. For the other characteristics such as the liquid and plastic limit, the free swelling ratio, the vertical free swelling strain and the swelling pressure, their values were observed a decrease with the increase in the power level. The change in the soils characteristics could be attributed to the impact of the irradiation on the expulsion of the interlayer structure water and on the change of soil mineral content or structure.

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Section: Discussionmentioning

confidence: 74%