Shear strength and permeability properties of lateritic soils from North West Malaysia due to extended compaction

Rosli, Ros N.; Selamat, Mohamad Razip; Ramli, Harris

doi:10.1016/j.matpr.2019.06.344

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…In this study, the permeability coefficient was measured after the saturation using the falling head method for the mixture (soil and sodium carbonate). The water amount extracted from each soil was recorded over a period of 20 6 were calculated using Eq. 3 and are shown below.…”

Section: Test Results Of Permeabilitymentioning

confidence: 99%

Impact of Sodium Carbonate on Seepage Reduction in Farm Irrigation Ponds

2023

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Rainfall does not always meet crop water demands in many areas, a problem that climate change is expected to exacerbate. Considering the high rate of seepage in earth ponds, there is an urgent need to improve irrigation efficiency. This research evaluates an economic layer based on a simple technology to minimize seepage at the bottom. Therefore, it is recommended that sodium salts be used in combination with soil at the bottom of irrigation ponds. Three types of slightly plastic loamy soils were selected with clay contents of 20%, 15%, and 10%. The soil textures were determined first, followed by their chemical properties. Sodium carbonate was utilized at 0%, 2%, 4%, 6%, 8%, 10%, and 12% by soil weight. Finally, the falling head permeability test, SEM analysis, pH, and compaction tests were conducted. Based on the results, the maximum seepage reduction was due to the use of soil sample #3. The 10% sodium carbonate caused the maximum reduction in permeability. For the pH and compaction test results, the addition of sodium carbonate respectively decreased soil permeability and increased soil compaction. Overall, the results indicate that this pond sealer can effectively reduce seepage in farm irrigation ponds.

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Section: Test Results Of Permeabilitymentioning

confidence: 99%

Impact of Sodium Carbonate on Seepage Reduction in Farm Irrigation Ponds

2023

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“…The permeability of sand is one of the key factors that determine the movement and occurrence of underground liquids and gases [1]. After Darcy's law was introduced experimentally based on permeability [2], subsequent studies have shown that many factors affect the permeability of porous media, including sand composition [3][4][5], pore size [6][7][8][9], compaction [10][11][12][13], dry density [14][15][16][17][18][19], etc.…”

Section: Introductionmentioning

confidence: 99%

Research on the Critical Value of Sand Permeability Particle Size and Its Permeability Law after Mixing

Lu,

Li,

et al. 2024

Water

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The permeability of sand is an important factor in determining the movement and occurrence of liquids and gases in sand. The current work studied the influence of soil particle size and gradation on permeability by testing the permeability of different sand samples that consist of defined sand particles in certain ratios. The results of a total of 640 sets of experiments were analyzed and compared with the corresponding theoretical calculations. We found that the sand can be divided into four groups based on particle size: high-permeability particles, medium-permeability particles, low-permeability particles and non-permeable particles; and the critical particle size of sand for permeability is 0.050 mm. Permeation will be lost when non-permeable particles account for >75% of the total in the mixture of high-permeability particles and non-permeable particles. Permeation will be very easily lost when medium- or low-permeability particles are mixed with non-permeable particles. The current findings are of importance for assessing the permeability of sand based on particle size.

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“…Laterite is a brownish yellow and brown regional special clay formed by physical and chemical weathering of carbonate rocks (or rocks rich in iron, silicon, and alumina) under humid and warm subtropical climate [1][2][3][4], which is widely distributed in Guangxi Zhuang Autonomous Region in southern China [5,6]. Due to the special engineering properties of laterite, such as high void ratio, high water content, hard top and soft bottom, loss of water shrinkage, and cracking [7][8][9][10][11][12][13], it is easy to induce insufficient foundation bearing capacity, ground collapse, slope cracking, uneven settlement, and other project problems [14][15][16][17]. In addition to the disturbance of the stratum developed by the laterite, the unique mechanical properties of the laterite seriously threaten the safety of engineering construction and bring a lot of inconvenience to the construction process [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Microscopic Properties of Graphite/Laterite Nanocomposites

Gao

Zhang³

et al. 2021

Advances in Materials Science and Engineering

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The effectiveness and improvement mechanism of graphite nanoparticles (GN) in strength properties and microstructure characteristics of regional laterite were analysed in this study. Dry density was also taken into consideration, and the effects of graphite nanoparticle (GN) content and dry density were mainly addressed. Triaxial tests, consolidation tests, and penetration tests were used to analyse the effectiveness of different dry densities and graphite nanoparticle mass ratios on the properties of laterite; microscopic methods such as scanning electron microscopy (SEM) tests were used to analyse the improvement mechanism. The results show that the increase in dry density can make the laterite more compact. The large specific surface area and nanoeffects of the graphite nanoparticles (GN) induce the attraction between soil particles after mixing, both of which make the laterite’s shear strength; compression index and impermeability have been enhanced to varying degrees. The microscopic tests showed that, as the content of graphite nanoparticles (GN) continues to increase, when it exceeds 1.0%, the attraction between soil particles increases and coarse particles are formed, which leads to the increase of the pores of the soil. In addition, the graphite nanoparticles have a certain degree of lubricity, a high amount of graphite nanoparticles enters the laterite soil layer, increasing the distance and gap between the layers, making it easy to separate the coarse particles from the coarse particles, and the strength increase is reduced. However, it is still stronger than that of the plain laterite.

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Shear strength and permeability properties of lateritic soils from North West Malaysia due to extended compaction

Cited by 12 publications

References 4 publications

Impact of Sodium Carbonate on Seepage Reduction in Farm Irrigation Ponds

Impact of Sodium Carbonate on Seepage Reduction in Farm Irrigation Ponds

Research on the Critical Value of Sand Permeability Particle Size and Its Permeability Law after Mixing

Mechanical and Microscopic Properties of Graphite/Laterite Nanocomposites

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