Modeling of water balance, cracking and subsidence of clay soils

Bronswijk, J.J.B.

doi:10.1016/0022-1694(88)90115-1

Cited by 169 publications

(95 citation statements)

References 16 publications

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“…The stages correlate to the phases depicted in the shrinkage curve by Haines (1923) and Bronswijk (1988), and they are similar to the ones described by Abu-Hejleh and Znidarčić (1995). Peron et al (2009) also defined the deformations during the drying process, but they grouped all in just two steps.…”

Section: Accepted M Manuscriptsupporting

confidence: 58%

Observations on the desiccation and cracking of clay layers

Tollenaar

Paassen

Jommi

2017

Engineering Geology

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Waterways and lakes in low-lying delta areas require regular dredging for maintenance. Often these sediments are placed on land, where they are allowed to ripen through a combination of drainage, consolidation and evaporation. When cracks develop during desiccation, the physical response of the soil is affected by changes in the overall strength, stiffness and permeability of the material. To better identify how cracks form and propagate, a series of tests was carried out in a controlled laboratory environment on samples of drying clay slurries under different initial and boundary conditions. The outcomes of this study indicate that the results from laboratory small scale models must be carefully analyzed, as they depend on the area and the thickness of the sample. However, common features from the different tests can be identified, which are mostly related to the intrinsic behavior of the material. For instance, the water content at which cracks initiate depends mostly on the drying rate and not only on the initial water content.

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Section: Accepted M Manuscriptsupporting

confidence: 58%

Observations on the desiccation and cracking of clay layers

Tollenaar

Paassen

Jommi

2017

Engineering Geology

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“…In fact, the shrinkage of the soil consists of two parts: transverse shrinkage and vertical shrinkage. In most cases there are anisotropic characteristics (Bronswijk, 1988), but these two show different forms. The results of the soil transverse shrinkage are cracking of the slope surface, and the results of the vertical shrinkage are land subsidence.…”

Section: Soil Shrinkage Cracking Under Evaporationmentioning

confidence: 99%

Field Tests of Expansive Soil Embankment Slope Deformation Under the Effect of the Rainfall Evaporation Cycle

Wang¹

2017

Appl Ecol Env Res

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Abstract. In order to provide the necessarily basic parameters for designing the planned airport project in the An Kang area using expansion soil, a local physical model is being made, in particular to assess fill slope stability and for follow-up testing of the slope deformation under the effect of the rainfallevaporation cycle, and subsequent analysis of the law of evolution and formation mechanism of the slope deformation. The results show the following. (1) There are three stages of rainwater infiltration into newly-built fill slopes, free infiltration, scouring infiltration and erosion stable infiltration. In this experiment, the major rainwater infiltration process is the scouring infiltration stage, leading to the limited depth of infiltration. (2) For a completely uniform fill slope, the development of the deformation is affected by the leading role of the expansion soil deformation; the deformation of the top of the hill mainly shows vertical swell-shrink deformation, but the surface of the slope shows mainly horizontally cumulative deformation. With the increasing depth and rainfall frequency, the deformation rate drastically reduces. (3) The slope deformation is closely related to rainfall and evaporation, and rainfall is the main factor leading to the sharply increased deformation, evaporation is a necessary prerequisite for the development of the deformation. (4) Preventing rainfall and evaporation destruction and deformation of the slope should be commenced from two aspects: first, effectively reduce soil moisture variations of the slope influencing the scope on the surface, and second, prevent slope erosion and scouring by runoff.

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“…(1) (with indicated replacements and inaccuracies) for description of a situation with layer drying [1][2][3][4], there is also another application. Equation (1) in formally the same view is also the exact one for core shrinkage and cracking. In this case z= z c (and z=z c ), but the V and V values again, by definition, only relate to the core matrix, and consequently again V/V V c /V c because V c can contain both crack and matrix contributions.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Bronswijk [1][2][3][4] suggested the estimation of the vertical-crack volume developing in a soil, based on his concept of the shrinkage geometry factor, r s . He was interested in field condition applications; that is, in the crack volume that develops in an infinite soil layer, but not in a sample.…”

Section: Introductionmentioning

confidence: 99%

Using the Reference Shrinkage Curve to Estimate the Corrected Crack Volume of a Soil Layer

Chertkov¹

2008

TOMECHJ

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Abstract:To estimate the correct soil crack volume based on the shrinkage geometry factor, in addition to measurements with core samples, one also needs to know the shrinkage curve of the soil matrix without cracks. For such a curve one can use the soil reference shrinkage curve that is only stipulated by intraaggregate clay shrinkage without interaggregate cracking. The objective of this work is to illustrate such use of the reference shrinkage curve and, in addition, to argue the necessity to correct the usual estimates of the shrinkage geometry factor in order to correctly estimate the soil crack volume. The illustration is based on available data and reference shrinkage curves for eight soils.

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Modeling of water balance, cracking and subsidence of clay soils

Cited by 169 publications

References 16 publications

Observations on the desiccation and cracking of clay layers

Observations on the desiccation and cracking of clay layers

Field Tests of Expansive Soil Embankment Slope Deformation Under the Effect of the Rainfall Evaporation Cycle

Using the Reference Shrinkage Curve to Estimate the Corrected Crack Volume of a Soil Layer

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