Methods and Results of Experimental Researches of Thermal Conductivity of Soils

Nikiforova, Tetiana; Savytskyi, M. V.; Limam, Karim; Bosschaerts, Walter; Belarbi, Rafik

doi:10.1016/j.egypro.2013.12.034

Cited by 53 publications

(12 citation statements)

References 1 publication

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“…This influence is related to the role they play in soil thermal conductivity. Soil thermal conductivity refers to the quantity of heat that flows through a unit area in a unit time under a unit temperature gradient [45] and is affected by the degree of soil saturation, dry density, mineral composition, temperature, texture, and time [46,47]. Coarse-textured, wet, and organic matter-rich soils have higher conductivity than vice versa and provide a conductive platform for wildfires [26,[48][49][50][51].…”

Section: Soil Propertiesmentioning

confidence: 99%

Fire-Induced Changes in Soil and Implications on Soil Sorption Capacity and Remediation Methods

Ngole‐Jeme

2019

Applied Sciences

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Vegetation changes caused by fire events are visible instantly but changes in soils are less apparent, and could be short-term, long-term or permanent in nature. Research has shown that soils undergo changes in their mineralogical, geochemical, physico-chemical and biological properties after a fire event that may vary depending on the intensity and duration of the fire, and the properties of the soil. Some of these properties make significant contributions towards soil’s ability to sorb contaminants. Changes in these properties could affect soil sorption complex and the effectiveness of remediation methods used to clean these soils when contaminated. This review synthesizes available information on fire-induced changes in soil properties affecting soil sorption and the factors which dictate these changes. The implications of changes in these properties on the soil’s natural attenuation capacity and choice of remediation method to clean up fire-affected contaminated soils are also discussed.

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Section: Soil Propertiesmentioning

confidence: 99%

Fire-Induced Changes in Soil and Implications on Soil Sorption Capacity and Remediation Methods

Ngole‐Jeme

2019

Applied Sciences

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“…Samples of cohesive soil with a diameter of 100 mm and a height of at least 120 mm were tested. In addition, experimental data from various authors was used [16,17]. Variation of values can be significant, however, with a larger number of definitions, the convergence of the computational model and experimental data is quite high.…”

Section: Fig 3 Comparison Of Calculated and Experimental Values Of mentioning

confidence: 99%

Modeling heat transfer process in soils

et al. 2018

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In this paper, a new model is presented for calculating the thermal conductivity of soils, and the main provisions for the derivation of analytical formulas are given. The presented model allows taking into account the density, moisture content and temperature of the soil base. The technique presented in the paper makes it possible to dispense with laborious experiments to estimate the thermal conductivity of the soil. The method of analytical calculation is step by step presented in the paper. Two variants of using the method are proposed: 1) Less accurate method, for preliminary evaluation, without the need to take probe and conduct experiments. 2) More accurate method, with at least one experiment with a disturbed or undisturbed sample. The results of comparison of calculated values of thermal conductivity and experimental data are presented.

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“…In practice, fitting empirical models to experimental data is still the most effective and popularly way employed for real world applications [32,33]. Farouki [34] has given a comprehensive review on soil thermal conductivity empirical models.…”

Section: Previous Researchmentioning

confidence: 99%

Experimental Study and Modelling of the Thermal Conductivity of Sandy Soils of Different Porosities and Water Contents

et al. 2017

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This paper at first reports an experimental work to test the thermal conductivity of formulated sandy soil specimens of different porosities and water contents. Both needle probe and hot-plate methods were conducted and compared. It has been confirmed that the needle probe method has a better accuracy for the measurement of unsaturated soil thermal conductivity, and that the pore size distribution plays an important role on unsaturated soil thermal conductivity. Secondly, it gives out an extensive review on the modelling work, and investigates two major types of empirical models in detail. Two generalized formulas have been suggested to mathematically characterise the two types of models and tested using the experimental data. Finally, in terms of the intrinsic relation to the pore size distribution and the similarity between the thermal conductivity and water retention characteristics of unsaturated soils, a soil water retention model has been suggested and tested to describe unsaturated soil thermal conductivity.

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Methods and Results of Experimental Researches of Thermal Conductivity of Soils

Cited by 53 publications

References 1 publication

Fire-Induced Changes in Soil and Implications on Soil Sorption Capacity and Remediation Methods

Fire-Induced Changes in Soil and Implications on Soil Sorption Capacity and Remediation Methods

Modeling heat transfer process in soils

Experimental Study and Modelling of the Thermal Conductivity of Sandy Soils of Different Porosities and Water Contents

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