Microstructure – Hydro-Mechanical Property Relationship in Clay Dominant Soils

Gallier, Jonathan; Dudoignon, P.; Hillaireau, J.M.

doi:10.5772/37061

Cited by 2 publications

(19 citation statements)

References 15 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculations made with an average 25 meq/100 g CEC and fluid conductivities measured on water sampled in piezometers (2 S·m −1 and 4 S·m −1 in corn field and grassland, resp.) give results equivalent to the resistivities calculated following the simple Archie's law [15]. In these salt media of coast marshes, the high fluid conductivities minimize the clay mineral surface effect.…”

Section: Methodsmentioning

confidence: 88%

“…The study of the soil structure-hydromechanical property relationships was performed by coupling the water profiles with cone resistance and shear stress profiles [14, 15]. Finally authors used the shrinkage curve of the clay dominant soil to represent the results in successive crossed diagrams [9–15].…”

Section: Methodsmentioning

confidence: 99%

“…Finally authors used the shrinkage curve of the clay dominant soil to represent the results in successive crossed diagrams [9–15]. …”

Section: Methodsmentioning

confidence: 99%

“…The consequences are the superimposition of the water and salt stresses due to the plant growing. The present paper is based on works made on the French Atlantic coast wetlands many years ago [9–15]. The successive works focused on the relationships which can exist between the microstructure evolution of clay matrices and the macroscopic properties of the clay dominant soils.…”

Section: Introductionmentioning

confidence: 99%

“…The primary investigations were driven in order to ensure the homogeneity of the shallow sedimentary formations throughout the marshlands of the Marais Poitevin and Marais de Rochefort. Secondly, the investigations were concentrated on the INRA experimental site of St Laurent de la Prée for all the calibrations of soil structure-hydromechanical properties relationships [13, 15] (Figures 1 and 2). Thirdly the goal was to understand the role of the soil structure evolution on the plant growing and crop yield.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Polder Effects on Sediment-to-Soil Conversion: Water Table, Residual Available Water Capacity, and Salt Stress Interdependence

Radimy

Dudoignon

Hillaireau³

et al. 2013

The Scientific World Journal

View full text Add to dashboard Cite

The French Atlantic marshlands, reclaimed since the Middle Age, have been successively used for extensive grazing and more recently for cereal cultivation from 1970. The soils have acquired specific properties which have been induced by the successive reclaiming and drainage works and by the response of the clay dominant primary sediments, that is, structure, moisture, and salinity profiles. Based on the whole survey of the Marais Poitevin and Marais de Rochefort and in order to explain the mechanisms of marsh soil behavior, the work focuses on two typical spots: an undrained grassland since at least 1964 and a drained cereal cultivated field. The structure-hydromechanical profiles relationships have been established thanks to the clay matrix shrinkage curve. They are confronted to the hydraulic functioning including the fresh-to-salt water transfers and to the recording of tensiometer profiles. The CE1/5 profiles supply the water geochemical and geophysical data by their better accuracy. Associated to the available water capacity calculation they allow the representation of the parallel evolution of the residual available water capacity profiles and salinity profiles according to the plant growing and rooting from the mesophile systems of grassland to the hygrophile systems of drained fields.

show abstract

Section: Methodsmentioning

confidence: 88%

Section: Methodsmentioning

confidence: 99%

“…Finally authors used the shrinkage curve of the clay dominant soil to represent the results in successive crossed diagrams [9–15]. …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Polder Effects on Sediment-to-Soil Conversion: Water Table, Residual Available Water Capacity, and Salt Stress Interdependence

Radimy

Dudoignon

Hillaireau³

et al. 2013

The Scientific World Journal

View full text Add to dashboard Cite

show abstract

Evapotranspiration―Soil Structure Relationship in West Marshes of France

Radimy¹,

Dudoignon²,

Hillaireau³

et al. 2014

JWARP

Self Cite

View full text Add to dashboard Cite

The soil potentials, facing to the crop fields, are commonly estimated through the calculation of their available water capacity based on the ETP or ETM estimation. The present work introduces the comparison between theoretical and real available water capacity profiles calculated down to 1.00 m depth. The evapotranspiration data are used to the calculation of ETP in an undrained grassland and ETM in two drained corn fields located in the French Atlantic marshlands. The studied soils have acquired specific properties in response to the reclaiming of the clay; dominant primary sediments began since the Middle Age and late drainage works. The theoretical and real available water capacity profiles are calculated from the ETP and ETM data and from the soil moisture profiles respectively, from June to October 2013. The theoretical and real profiles are confronted to the tensiometric pressure recording at 30, 60 and 90 cm. The tensiometric pressure behavior and associated premature disconnections of the tensiometric plugs are explained thanks to the soil structure-hydromechanical property relationships: i.e. from ductile state in depth to brittle state in surface. The vertical evolutions of the real profiles are explained facing to the plant growing, pluviometry and water nape levels. Their behavior and their shifts from the linear "theoretical" ETP or ETM profiles clearly show the advance of the desiccation front and consequently the kinetics of water consumption by plants. This simple method of calculation and comparison between the real and theoretical ETM or ETP profiles allows the quantitative discussion: 1) on the role of the soil microstructure behavior on the root growing and, 2) on the realism of the crop coefficient taken into account in the ETP or ETM estimation. In these coastal marsh fields, it also argues on the difficulty of management facing to the water and/or salt stresses.

show abstract

Microstructure – Hydro-Mechanical Property Relationship in Clay Dominant Soils

Cited by 2 publications

References 15 publications

Polder Effects on Sediment-to-Soil Conversion: Water Table, Residual Available Water Capacity, and Salt Stress Interdependence

Polder Effects on Sediment-to-Soil Conversion: Water Table, Residual Available Water Capacity, and Salt Stress Interdependence

Evapotranspiration―Soil Structure Relationship in West Marshes of France

Contact Info

Product

Resources

About