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Your search keyword '"Soils -- Models"' showing total 118 results
Start Over Descriptor "Soils -- Models"
118 results on '"Soils -- Models"'

1. Research Findings from Hainan University Update Understanding of Toxicology (Health Risk Assessment of Heavy Metals in Agricultural Soils Based on Multi-Receptor Modeling Combined with Monte Carlo Simulation)

Subjects
Soils -- Models, Risk assessment -- Models, Metal industry -- Models, Heavy metals -- Models, Industrial research -- China, Physical fitness -- Models, Monte Carlo method -- Models, Research and development, Health
Abstract

2024 SEP 21 (NewsRx) -- By a News Reporter-Staff News Editor at Obesity, Fitness & Wellness Week -- Researchers detail new data in toxicology. According to news reporting out of [...]

Published
2024

2. New Computers and Geotechnics Data Have Been Reported by Investigators at Queensland University of Technology (QUT) (Modelling Soil-water Retention Curves Subject To Multiple Wetting-drying Cycles: an Approach for Expansive Soils)

Subjects
Soils -- Models, Technical institutes -- Models, Engineering geology -- Models, Computers, News, opinion and commentary
Abstract

2024 JUL 10 (VerticalNews) -- By a News Reporter-Staff News Editor at Computer Weekly News -- Investigators publish new report on Computers and Geotechnics. According to news reporting originating from [...]

Published
2024

5. Silt Clearance Restoration Of Mahav Drain From Km 11.000 To Indo-nepal Boundary Outside The Forest Area And Eco-sensitive Zone For Permanent Solution Based On Hydraulic And Mathematical Model Study For Long-term Protection And Solution

Subjects
Soils -- Models, Silt -- Models, Business, international
Abstract

Tenders are invited for Silt clearance restoration of mahav drain from km 11.000 to indo-nepal boundary outside the forest area and eco-sensitive zone for permanent solution based on hydraulic and [...]

Published
2024

7. A microstructure-based elastoplastic model to describe the behaviour of a compacted clayey silt in isotropic and triaxial compression

Author

Musso, Guido, Azizi, Arash, and Jommi, Cristina

Subjects
Silt -- Models, Soils -- Models, Porosity -- Models, Earth sciences
Abstract

The paper focuses on the hydromechanical behaviour of an unsaturated compacted clayey silt, accounting for fabric changes induced by drying-wetting cycles occurring at low stress levels. The response along isotropic compression and triaxial compression (shear) at constant water content was investigated by laboratory tests on both as-compacted and dried-wetted samples. Compaction induces a microstructural porosity pertinent to clay peds and a macrostructural porosity external to the peds. Drying-wetting cycles decrease the microporosity and increase the macroporosity, which reduces the water retention capacity, increases the compressibility, and promotes higher peak strengths with more brittle behaviour during triaxial compression. A coupled double-porosity elastic-plastic model was formulated to simulate the experimental results. A nonassociated flow rule was defined for the macrostructure, modifying a stress-dilatancy relationship for saturated granular soils to account for the increase in dilatancy with suction observed in the experiments. The average skeleton stress and suction were adopted as stress variables. As correctly predicted by the model, the shear strength at critical state is not significantly influenced by the degree of saturation or by the hydraulic history. On the contrary, the higher peak strength, brittleness, and dilatancy of the dried-wetted samples are mostly explained by their reduced water-retention capacity. Key words: compacted silt, drying-wetting cycles, hydromechanical behaviour, double-porosity formulation, stress-dilatancy relationship. Le document porte sur le comportement hydromecanique d'un limon argileux compacte non sature, prenant en compte les changements de tissu induits par les cycles de sechage-mouillage se produisant a des niveaux de contrainte faibles. La reponse par compression isotrope et compression triaxiale (cisaillement) a teneur en eau constante a ete etudiee par des tests de laboratoire sur des echantillons compactes et des echantillons mouilles et seches. La compaction induit une porosite microstructurelle pertinente pour les peds d'argile et une porosite macrostructurelle exterieure aux peds. Les cycles de sechagemouillage diminuent la microporosite et augmentent la macroporosite, ce qui reduit la capacite de retention d'eau, augmente la compressibilite et favorise des resistances maximales plus elevees avec un comportement plus fragile lors de la compression triaxiale. Un modele elastoplastique a double porosite couple a ete formule pour simuler les resultats experimentaux. Une regle de flux non associee a ete definie pour la macrostructure, modifiant une relation contrainte-dilatance pour des sols granulaires satures afin de prendre en compte l'augmentation de la dilatance avec succion observee dans les experiences. Le stress squelettique moyenne et la succion ont ete adoptes comme variables de stress. Conformement aux previsions du modele, la resistance au cisaillement a l'etat critique n'est pas influencee de maniere significative par le degre de saturation ou par l'historique hydraulique. Au contraire, la resistance maximale plus elevee, la fragilite et la dilatance des echantillons humides-seches sont principalement expliquees par leur capacite de retention d'eau reduite. [Traduit par la Redaction] Mots-cles : limon compacte, cycles sechage-mouillage, comportement hydromecanique, formulation a double porosite, relation stress-dilatance., 1. Introduction According to standard practice, the engineering requirements for earth construction projects are achieved by compaction at optimum density and water content, and the design of the earth construction [...]

Published
2020

8. Construction Of 06 Nos Community Leach Pit With Silt Chamber And Platform At Different Places Of Uttar Model, Model Bandhpara, Dakshin Model, Brahmattar, Tambutola And Rajnagar Village Under Rajnagar Gp

Subjects
Soils -- Models, Silt -- Models, Business, international
Abstract

Tenders are invited for Construction of 06 nos Community Leach Pit with silt chamber and platform at different places of Uttar Model, Model Bandhpara, Dakshin Model, Brahmattar, Tambutola and rajnagar [...]

Published
2023

18. Construction Of 10 Nos Collection Platform, Silt Chamber With Community Leach Pit ( 10 Hh ) Under Hereparbat Imis Village, Kamarpukur Imis Village Madhuban Imis Village , Under Dwarika Gossainpur Gp As Per Model Estimate

Subjects
Soils -- Models, Silt -- Models, Business, international
Abstract

Tenders are invited for Construction of 10 Nos Collection Platform, Silt Chamber with Community Leach Pit ( 10 HH ) under Hereparbat IMIS Village, Kamarpukur IMIS village madhuban IMIS Village [...]

Published
2023

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