scholarly journals Geotechnical Behavior and Soil-Fiber Interaction of Clayey Soil Mixed with Randomly Dispersed Coconut Fibers

2019 ◽  
Vol 42 (2) ◽  
pp. 127-138
Author(s):  
Antônio Italcy de Oliveira Júnior ◽  
José Fernando Thomé Jucá ◽  
Janilson Alves Ferreira ◽  
Laís Chaves Guilherme
Keyword(s):  
Clayey Soil ◽  
Fiber Interaction ◽  
Coconut Fibers

Alkaline Activation of Clayey Soil Using Potassium Hydroxide & Fly Ash

2018 ◽  
Vol 10 (9) ◽  
Author(s):  
Ahmed Elkhebu ◽  
◽  
Adnan Zainorabidin ◽  
Ismail Hj. Bakar ◽  
Bujang B. K. Huat ◽  
...  
Keyword(s):  
Fly Ash ◽  
Potassium Hydroxide ◽  
Clayey Soil ◽  
Alkaline Activation

Improvement in the Engineering Properties of Clayey Soil Using Sodium Chloride

2020 ◽  
Author(s):  
Harpinder Pal Singh ◽  
Jaspreet Singh Chana ◽  
Gurpreet Singh ◽  
Hardev Singh ◽  
Manvir Singh
Keyword(s):  
Sodium Chloride ◽  
Clayey Soil ◽  
Engineering Properties

Contaminant migration from sanitary landfill leachate through soil monoliths

1995 ◽  
Vol 32 (7) ◽  
pp. 215-219 ◽  
Author(s):  
Magdelinka Radenkova-Yaneva ◽  
Emilia Kostakeva ◽  
Dimiter Toshev
Keyword(s):  
Clayey Soil ◽  
Sanitary Landfill ◽  
Potential Danger ◽  
Contaminant Migration ◽  
Clay Liners ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Inorganic Substances ◽  
Sanitary Landfills ◽  
Sanitary Landfill Leachate

It is well known that the leachates from solid domestic waste sanitary landfills are heavily polluted with organic and inorganic substances. As they are of a potential danger for the environment, their uncontrolled seepage is avoided in the modern sanitary landfills by means of suitable insulation. This is mostly made of natural materials with a low filtration coefficient. The present paper considers the results of the filtration characteristics, studying natural clayey soil model liners. The leachate contaminants distribution from the sanitary landfill in Sofia (Suhodol) is traced out in different liner depths. The mechanism of pollutant attenuation in the liners is considered. It is found that a part of the leachate components (Fe, Mn, SO42−, PO43−) stays in clayey liners. Besides, as a result of pore colmatation the permeability of the liners is decreased. It is shown that soil monoliths with a proper thickness might serve as a sufficiently safe barrier against leachate filtration in adjacent aquifers. On the base of the results obtained the thickness of the clay liners in the solid domestic waste sanitary landfills could be optimized.

Tensile strength of clayey soil and the strain analysis based on image processing techniques

2019 ◽  
Vol 253 ◽  
pp. 137-148 ◽  
Author(s):  
Hao-Da Li ◽  
Chao-Sheng Tang ◽  
Qing Cheng ◽  
Sheng-Jie Li ◽  
Xue-Peng Gong ◽  
...  
Keyword(s):  
Image Processing ◽  
Tensile Strength ◽  
Clayey Soil ◽  
Strain Analysis ◽  
Image Processing Techniques ◽  
Processing Techniques

scholarly journals Redistribution of Zn towards light-density fractions and potentially mobile phases in a long-term manure-amended clayey soil

Geoderma ◽  
2021 ◽  
Vol 394 ◽  
pp. 115044
Author(s):  
Thiago A. Formentini ◽  
Isabelle Basile-Doelsch ◽  
Samuel Legros ◽  
Daniel Borschneck ◽  
Julia S. Venzon ◽  
...  
Keyword(s):  
Clayey Soil ◽  
Density Fractions ◽  
Mobile Phases ◽  
Light Density

scholarly journals Pinhole Multistep Centrifuge Outflow Method for Estimating Unsaturated Hydraulic Properties with Small Volume Soil Samples

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1169
Author(s):  
Long Thanh Bui ◽  
Yasushi Mori
Keyword(s):  
Hydraulic Properties ◽  
Volcanic Ash ◽  
Small Volume ◽  
Clayey Soil ◽  
Soil Hydraulic Properties ◽  
Retention Curve ◽  
Volcanic Ash Soil ◽  
Equilibrium Data ◽  
Soil Hydraulic ◽  
Water Holding

If soil hydraulic conductivity or water holding capacity could be measured with a small volume of samples, it would benefit international fields where researchers can only carry a limited amount of soils out of particular regions. We performed a pinhole multistep centrifuge outflow method on three types of soil, which included granite decomposed soil (Masa soil), volcanic ash soil (Andisol soil), and alluvial clayey soil (paddy soil). The experiment was conducted using 2 mL and 15 mL centrifuge tubes in which pinholes were created on the top and bottom for air intrusion and outflow, respectively. Water content was measured at 5, 15, and 30 min after applying the centrifuge to examine the equilibrium time. The results showed that pinhole drainage worked well for outflow, and 15 or 30 min was sufficient to obtain data for each step. Compared with equilibrium data, the retention curve was successfully optimized. Although the curve shape was similar, unsaturated hydraulic conductivities deviated largely, which implied that Ks caused convergence issues. When Ks was set as a measured constant, the unsaturated hydraulic properties converged well and gave excellent results. This method can provide soil hydraulic properties of regions where soil sampling is limited and lacks soil data.

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