Plasticity modification of a tropical laterite by electrochemical stabilization

Ayodele, Adekemi Loretta; Pamukcu, Sibel; Agbede, Oluwole A.

doi:10.1016/j.electacta.2020.136047

Cited by 6 publications

(5 citation statements)

References 25 publications

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“…In territories where lateritic soil of this sort is available, attempting to get appropriate alternative soil may not be practical. Thus, stabilization of the laterite to meet the necessary strength is unavoidable [25]. Notwithstanding, Oluyinka & Olubunmi [26] and Adeyemi & Ilesanmi [27] detailed that lateritic soil in its compacted state has not furnished the necessary toughness expected with the life expectancy of the civil structures as clear from the different disappointments saw on most construction projects the nation over.…”

Section: Lateritementioning

confidence: 99%

“…Earlier, soil improvement has been in the qualitative sense only, but more recently it has also become associated with quantitative values of strength and durability which are related to performance [25]. These quantitative values include compressive strength, shearing strength, load bearing quality, adsorption softening and reduction in strength and so on.…”

Section: Soil Stabilizationmentioning

confidence: 99%

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Effect of Groundnut Shell Ash on Laterite Soils Stabilized with Lime for Civil Structures

Adetayo¹,

Amu²,

Faluyi³

et al. 2021

IJIE

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This study considered the practicality of groundnut shell ash (GSA) on laterite stabilized with lime for civil structures. Three site locations of lateritic soil named specimen I, II and III were assembled from Ifewara, Atakunmosa West Local Government Area, Ilesa East Local Government Area, and Ilesa West Local Government, all situated in Osun State, Nigeria. Preliminary tests were wrapped up on the soil specimens in their characteristic states and when stabilized with optimum lime. Compaction, California Bearing Ratio (CBR) and undrained triaxial shear strength tests were performed when fluctuating paces of 2 %, 4 %, 6 %, and 8 % of GSA were included to the soil specimens at optimum lime. The Atterberg limits tests showed a critical decrease in plasticity index for all the soil specimens when stabilized with lime. Compaction test showed a lessening in the maximum dry density from 1732 kg/m3 to 1651 kg/m3 for specimen I, 1874 kg/m3 to 1621 kg/m3 for specimen II and 1683 kg/m3 to 1655 kg/m3 for specimen III on stabilizing with lime, presentation of GSA to stabilized lime-soil decreases the maximum dry density for all the soil specimen with specimen I diminished to 1642 kg/m3, 1595 kg/m3, 1611 kg/m3 and 1611 kg/m3 at 2 %, 4 %, 6 % and 8 % GSA substances individually. Addition of GSA substances enhanced the engineering properties of laterite stabilized with lime as the unsoaked CBR values expanded for all the soil specimens. At optimum lime measurements, addition of 4 % GSA expanded the shear strength to 110.74 kN/m2 and 127.53 kN/m2 for specimens I and II individually while at 6 % GSA addition, the shear strength of specimen III was peak 118.24 kN/m2. The expansion in shear strength further affirms the improvement prior shown in the geotechnical properties of lateritic soil with the addition of groundnut shell ash. addition of 2 % GSA content extended the triaxial shear strength from 60.43kN/m2 to 188.36kN/m2 for specimen I, and at 4% GSA content, both soil specimens II and III expanded from 19.19kN/m2 to 201.48kN/m2 and 30.62kN/m2 to 111.65kN/m2 separately. Conclusively, GSA improved the durability and strength of lateritic soils stabilized with lime for civil structures.

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Section: Lateritementioning

confidence: 99%

Section: Soil Stabilizationmentioning

confidence: 99%

Effect of Groundnut Shell Ash on Laterite Soils Stabilized with Lime for Civil Structures

Adetayo¹,

Amu²,

Faluyi³

et al. 2021

IJIE

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“…There was a soil shear-strength increase in the expansive soil that had been injected with CaCl2 at the anode [6]. Electrokinetic with CaCl2 injection reduced the LL, PL, and IP values and had an effect on the swelling potential of the soil [9][10][11][12][13]. The electroosmosis process causes the movement of water from the anode to the cathode, and CaCl2 is simultaneously injected, hence, there is a change in physical and mechanical properties, mineralogy of the soil, and a decrease in each certain distance.…”

Section: Introductionmentioning

confidence: 99%

Voltage optimization in expansive soil improvement with saline solution on swelling and shear strength

Darmiyanti,

Rachmansyah,

Munawir

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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One of the problems in the construction of the road network is the presence of expansive clay and loose soil. In Java, expansive clays are generally the result of weathering rock formations including shale and clay, while soft soils are derived from unconsolidated sedimentation. In situ stabilization of clay with chemical solutions will be difficult due to the very low permeability of the soil. Some researchers exploit the phenomenon of electrodynamics, the nature of the electric and hydraulic coupling to reform clay. This paper examines the experimental results of clay reclamation in the laboratory. The study was carried out on clay from Karawang, West Java province, Indonesia, which was injected with saline solution and used different voltages of 12V, 15V, 18V, and 24V. The success of this experiment will be seen by comparing the mechanical properties of the soil before and after electrochemical spraying. The test results show that electrochemical injection with calcium chloride salt solution and a voltage of 15V can reduce swelling characteristics and increase optimal shear strength.

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“…ability. [1], [2][3], [4] [5] Solution spray electrodynamics are known to alter the physical and mechanical properties of soil by reducing LL, PL, IP, growth potential, and changing shear angle and soil cohesion values. [6][7] [8] Soil minerals also change due to chemical solution spraying.…”

Section: Introductionmentioning

confidence: 99%

Expansive Soil Improvement Using Electrochemical Injection

Rachmansyah,

Darmiyanti,

Kusumaningrum

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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According to the Geological Map of Indonesia, the distribution of espansive soils in Indonesia, especially in Sumatra and Java, is very large. These soils, which have the mineralogy of illite, kaolite and montmorillonite, are known to have very high growth properties that affect the bearing capacity of the soil. Due to the mineralization nature, swollen soil is easy to retain water during the rainy season, leading to swelling and conversely, it is easy to shrink in summer. Therefore, Indonesia with its hot and rainy season has a great influence on the land expansive. Along with the increase in road construction through the Strategic National Highway Projects, it is likely that the project will be located in the expanded land area. Therefore, it is necessary to have measures to improve the soil to increase the shear strength of the soil. The bearing capacity of the soil can be determined from one of the values of the shear resistance of the soil. West Java is one where there are many types of soil. While this area is included in a national strategic project, namely the construction of the Ja-Pek II toll road. Soil improvement measures are taken to improve soil properties in order to increase the bearing capacity of the soil. Chemical soil electrolysis is an alternative method that can be used, with chemical solutions that are not harmful to the environment. The aim of this study was to determine the improvement in the bearing capacity of swollen soils that were improved by electrochemical spraying by examining one of the soil mechanical properties.

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Plasticity modification of a tropical laterite by electrochemical stabilization

Cited by 6 publications

References 25 publications

Effect of Groundnut Shell Ash on Laterite Soils Stabilized with Lime for Civil Structures

Effect of Groundnut Shell Ash on Laterite Soils Stabilized with Lime for Civil Structures

Voltage optimization in expansive soil improvement with saline solution on swelling and shear strength

Expansive Soil Improvement Using Electrochemical Injection

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