The effect of tree water uptake on suction distribution in tropical residual soil slope

Ishak, Maisarah; Zolkepli, Muhammad Farhan; Yunus, Mohd Yusri Bin Mohd; Ali, Nazri; Kassim, Anuar; Zaini, Muhammad Syamsul Imran

doi:10.1016/j.pce.2021.102984

Cited by 8 publications

(8 citation statements)

References 8 publications

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“…Kaolinite clay soil, categorized by its low plasticity, low shear strength, and susceptibility to shrink-swell behavior, presents substantial challenges in construction projects 19 , 22 . In response to these challenges, researchers and engineers have examined various soil stabilization techniques, including incorporating supplementary cementitious materials and chemical stabilizers, to improve clay soils' mechanical properties and performance 23 – 25 .…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations on physico-mechanical properties of kaolinite clay soil stabilized at optimum silica fume content using clamshell ash and lime

Zaini,

Hasan,

Almuaythir

et al. 2024

Sci Rep

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This investigation examines the effect of clamshell ash (CSA) and lime additives on the physico-mechanical characteristics of kaolinite clay soil stabilized at the optimum silica fume content. Laboratory tests were performed to assess plasticity, shrink-swell characteristics, compaction characteristics, unconfined compressive strength (UCS), shear strength characteristics, mineralogical and morphological microstructure characteristics of stabilized soil specimens. The kaolinite clay soil was stabilized at its optimum silica fume content (6%) to produce the highest strength and was altered with three non-identical proportions of clamshell ash and lime (3%-9%). Cylindrical soil specimens, 76 mm in height and 38 mm in diameter, were moulded and treated for curing periods of 1, 7, 14, and 30 days to examine the strength of the altered soil. The findings revealed that, adding clamshell ash and lime significantly alters the plasticity, shrink-swell, maximum dry unit weights, and optimum moisture contents of the silica fume-stabilized soil. In terms of strength, the beneficial effects of CSA and lime additives were found to be more significant with more extended curing periods. Incremental increases in curing periods resulted in further enhancements in UCS, cohesion, and internal friction angle, indicating continued strength development over time. Microstructural analysis using field emission scanning electron microscopy and X-ray diffraction provided insights into the interparticle bonding mechanisms and microstructural changes induced by the addition of CSA and lime. The emergence of cementitious phases and pozzolanic responses between soil particles and stabilizers contributed to the densification and strengthening of the stabilized soil matrix. The findings of this study provide valuable insights into the potential of clamshell ash and lime additives to enhance the engineering properties of kaolinite clay soil stabilized with silica fume. These results have implications for sustainable soil stabilization practices, offering a promising approach to improve the performance of soils for various engineering applications, including construction and geotechnical projects.

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Section: Introductionmentioning

confidence: 99%

Experimental investigations on physico-mechanical properties of kaolinite clay soil stabilized at optimum silica fume content using clamshell ash and lime

Zaini,

Hasan,

Almuaythir

et al. 2024

Sci Rep

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“…The CIU triaxial compression test was conducted in order to acquire the shear strength under different con ning pressure for the tropical residual soil. Based on Ishak et. al., (2021a), in Malaysia, the CIU test is more suitable for examining the shear strength parameters of the soil owing to most of the soil being in consolidated and undrained condition.…”

Section: Determination Of Physical Properties Of the Tropical Residua...mentioning

confidence: 99%

“…An investigation performed by Fredlund et.al (1996) explained that the value of the unsaturated friction angle, φ b is lower or equivalent to the saturated friction angle, φ' at a lower or high value of tree water uptake, the value of the unsaturated friction angle, φ b will decrease to a lower value. More water will expel out from the pores of the soil with no further increase of net stress when the matric suction increases (Ishak et. al., 2021a).…”

Section: Unsaturated Shear Strength Of Tropical Residual Soilmentioning

confidence: 99%

“…al., 2022b). A slope catastrophe can be affected by a few components, acting jointly or solitary, counting water penetration Ishak et. al., 2021a;Ishak et.…”

Section: Introductionmentioning

confidence: 99%

“…al., 202a). As examined by Ishak et al (2021a) soil states (e.g. water powered conductivity and entrance resistance), and sorts of verdure (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Alstonia Angustiloba Tree Water Uptake on Slope Stability: A Case Study at the Unsaturated Slope, Pahang, Malaysia

Zaini

Hasan

Zolkepli

2022

Preprint

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This study examines the effects of tree water uptake at different depths and distances on the improvement of induced water uptakes in soil owing to transpiration. This study is performed to examine the tree water uptake profile in a vegetated slope with the existence of Alstonia Angustiloba mature tree at the top and the permanence of the slope during various precipitation penetration events by which the data of the tree water uptake produced within this section of the slope is recorded and implemented to evaluate the factor of safety (FOS). Slope stability analysis is further conducted to explore how plant transpiration affects slope stability. The results portrayed that, higher tree water uptake lead to the greatest FOS of the slope up to 53% (from 2.17 to 4.57). The highest tree water uptake recorded was at the slope station with the existence of the Alstonia Angustiloba tree with a depth of 0.25 m and a distance of 1.1 m from the tree. The tree water uptake utilized in this study can contribute to a carbon-free and eco-friendly approach which can be implemented globally to prevent slope catastrophe.

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The Application of Unmanned Aerial Vehicles (UAV) for Slope Mapping with the Determination of Potential Slope Hazards

Zolkepli

Ishak

Wahap

2022

Advanced Structured Materials

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The effect of tree water uptake on suction distribution in tropical residual soil slope

Cited by 8 publications

References 8 publications

Experimental investigations on physico-mechanical properties of kaolinite clay soil stabilized at optimum silica fume content using clamshell ash and lime

Experimental investigations on physico-mechanical properties of kaolinite clay soil stabilized at optimum silica fume content using clamshell ash and lime

Influence of Alstonia Angustiloba Tree Water Uptake on Slope Stability: A Case Study at the Unsaturated Slope, Pahang, Malaysia

The Application of Unmanned Aerial Vehicles (UAV) for Slope Mapping with the Determination of Potential Slope Hazards

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