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What is hydraulic conductivity of soil?

Impervious surface

Hydraulic conductivity

Non-equilibrium thermodynamics

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Soil hydraulic conductivity refers to the ability of soil to transmit water. It is a crucial parameter influenced by various factors like pore structure, mineral-water interaction, and soil-water mechanisms. Different studies have highlighted the nonlinear nature of hydraulic conductivity, showcasing the impact of pore connectivity, capillarity, and adsorptive film flow . Research has shown that soil texture plays a significant role in determining hydraulic conductivity, with factors like soil type, particle size distribution, and specific surface area affecting water permeability . Additionally, studies have explored methods to enhance soil hydraulic conductivity, such as the use of poly-vinyl alcohol (PVA) to control water flow through soil, demonstrating varying impacts on hydraulic conductivity based on dissolution stages . Overall, understanding soil hydraulic conductivity is essential for assessing water movement in soils and its implications for various environmental processes.

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Posted Content•DOI Soil Hydraulic Conductivity Controls Soil Moisture Limitation of Transpiration Globally Mathieu Javaux, Peter Lehmann - Show less +1 more 15 May 2023	Soil hydraulic conductivity controls soil moisture limitation globally, influencing transpiration. It varies with soil texture, affecting water availability for plants and ecosystem fluxes.
Proceedings Article•DOI Hydraulic Conductivity of Soil with Poly-Vinyl Alcohol (PVA) Kleio Avrithi, Marlo J. Mecredy, Leila N. Kelly - Show less +2 more 23 Mar 2023	Hydraulic conductivity of soil refers to its ability to allow water to pass through. The study on soil with Poly-Vinyl Alcohol (PVA) shows a temporary increase in conductivity during PVA dissolution.
Open access•Journal Article•DOI Soil hydraulic conductivity in the state of nonequilibrium H. J. Vogel, Horst H. Gerke, Robert Mietrach, René Zahl, Thomas Wöhling - Show less +4 more 13 Feb 2023-Vadose Zone Journal	Hydraulic conductivity of soil in nonequilibrium conditions depends on both water content and potential, deviating from traditional assumptions, as discussed in the paper.
Journal Article•DOI A Soil Hydraulic Conductivity Equation Incorporating Adsorption and Capillarity L. Gou, Chaolei Zhang, Ning Lu, Shaojie Hu - Show less +3 more 01 Aug 2023-Journal of Geotechnical and Geoenvironmental Engineering	Soil hydraulic conductivity is a complex function influenced by pore structure, connectivity, and soil-water interactions like adsorption and capillarity. This equation integrates these factors for accurate predictions.
Book Chapter•DOI Assessing the Applicability of Sand Hydraulic Conductivity Calculation Techniques 01 Jan 2023	Hydraulic conductivity of soil is crucial for estimating water permeability. The study found discrepancies between field and lab methods, with empirical equations like Krüger's showing the closest match.

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Related Questions

What factors affect the hydraulic conductivity of cement in drainage systems?5 answersThe hydraulic conductivity of cement in drainage systems is influenced by various factors. The composition of the cement mixture plays a crucial role, with the presence of components like Ground Granulated Blast Furnace Slag (GGBS) affecting the hydraulic conductivity. Additionally, the accumulation of sediment within pervious concrete can lead to clogging, thereby reducing the infiltration rate and impacting hydraulic conductivity. The mesoscale structure of concrete, including the mortar, aggregates, and the Interfacial Transition Zone (ITZ), also significantly influences hydraulic conductivity, with the ITZ thickness and hydraulic conductivity being key factors. Moreover, the addition of cement in contaminated soil for soil amelioration can alter hydraulic conductivity, with crack formation and hardening time affecting the sealing properties. These factors collectively determine the hydraulic conductivity of cement in drainage systems.

What is the effect of contaminants on the hydraulic conductivity of clay?3 answersThe effect of contaminants on the hydraulic conductivity of clay depends on the specific type of contaminant. In the case of CO2-enriched brine and water vapor-saturated CO2 gas, the seepage of these fluids through fractured claystone can lead to an increase in fracture aperture and a decrease in the caprock seal capacity. However, in the case of the Boom Clay, which is a candidate host formation for radioactive waste disposal, the hydraulic conductivity is very low and water flow is negligible, with diffusion being the dominant transport mechanism. The hydraulic conductivity of silty clay, on the other hand, can vary depending on the depth and lithology, with higher magnitudes and ranges observed at greater depths. Overall, the presence of contaminants can affect the hydraulic conductivity of clay, but the specific effects depend on the type of contaminant and the characteristics of the clay formation.

What factors affect the hydraulic conductivity of clay?5 answersThe factors that affect the hydraulic conductivity of clay include the type of test used, the presence of organic liquids, the water content of the clay, and the size and gradation of clods and clumps of clay. Different types of tests can yield different measurements of hydraulic conductivity. Pure organic liquids can cause shrinking and cracking of clays, leading to significant increases in hydraulic conductivity, while dilute solutions of organics have minimal effect. High water content clays, such as those in slurry walls, are more susceptible to changes in hydraulic conductivity due to exposure to chemicals compared to lower water content compacted clays. Additionally, the size and gradation of clods and clumps of clay prior to compaction can significantly affect the measured hydraulic conductivity.

How much is the hydraulic conductivity of khobar aquifer in saudi arabia?5 answersThe hydraulic conductivity of the Khobar aquifer in Saudi Arabia is not mentioned in the abstracts provided.

What are the deterministic methods in estimation hydraulic conductivity using grain size?5 answersDeterministic methods for estimating hydraulic conductivity using grain size include the Hazen model, Beyer model, and Kozeny-Carman model. These models consider the grain diameter at 10% passing (d10) as an effective grain size and incorporate the effects of particle size uniformity or porosity. However, a new approach using dimensional analysis has been applied to analyze the relationship between hydraulic conductivity and particle size distribution (PSD). This approach considers the coefficient of grain size uniformity and a dimensionless group representing the gravity effect as the main determinative parameters for estimating hydraulic conductivity. Regression analysis on a database of soil samples has led to the development of new equations for hydraulic conductivity estimation, which show improved prediction compared to the classic models. Additionally, soft computing tools such as model trees have been used to predict hydraulic conductivity, providing transparent and understandable mathematical rules.

What is the relationship between lithofacies and hydraulic conductivity?4 answersLithofacies, or the characteristics of rock formations, have a significant impact on hydraulic conductivity. The hydraulic conductivity of karst collapse columns (KCCs) in North China is primarily influenced by the surrounding lithology formation, particularly the mudstone content. In the Lauswiesen alluvial aquifer in Germany, the correlation between hydraulic conductivity and porosity, which is determined by grain size distributions, affects the interpretation of breakthrough curves observed during tracer tests. A study in the Chaobai alluvial fan found that combining a stochastic hydrofacies model with geophysical methods can estimate conductivity distributions based on spatial deposit information and porosity estimates. In low-permeability mudstone and shale formations, the brittleness of the rock depends on mineral composition, organic matter abundance, and bedding structure, with certain lithofacies being more conducive to hydraulic fracturing. In the Bordeaux urban area, geostatistical analysis is used to transform lithological descriptions into local hydraulic conductivity values, with a 2D approach being more suitable than a 3D approach.

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