Using Image Analysis Technique to Study the Effect of Boundary and Environment Conditions on Soil Cracking Mechanism

Al-Jeznawi, Duaa; Sánchez, Marcelo; Al-Taie, Abbas J.

doi:10.1007/s10706-020-01376-5

Cited by 21 publications

(6 citation statements)

References 41 publications

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“…The development process of dry shrinkage cracks was the result of the combined action of two boundary conditions: the evaporation water loss of the upper interface and the friction of the lower interface. When the friction is small, the bottom displacement–limited fissure development is not obvious [ 30 , 31 , 32 ]. Considering the problem of boundary effect, the mold used in this experiment was made of smooth stainless steel, and the friction between it and the soil sample was small, so the cohesive force was small.…”

Section: Analysis Of Experimental Resultsmentioning

confidence: 99%

Study on the Expansion Law of Dry Shrinkage Cracks in Silty Clay

et al. 2022

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Fracture characteristics are the basis of silty clay fracture research, and its quantitative description is helpful to explore the engineering properties of silty clay. The silty clay samples with different moisture contents and different aspect ratios were prepared by the controlled variable method for the drying shrinkage test. The crack image processing and crack feature extraction were performed by PS and IPP software, and the relationship between the crack propagation characteristic parameters and the change in humidity and sample moisture content during drying shrinkage were analyzed to explore the crack development law. The results show that under the continuous action of the environment, cracks were generated at the initial high temperature (46 °C). When the temperature changed from a high temperature (46 °C) to a low temperature (27 °C), the moisture content decreased faster, and the crack developed rapidly. Later, from low temperature (12 °C) to high temperature (46 °C), the water content and crack parameters remained basically unchanged; the cracks of the samples with a high moisture content appeared early, developed rapidly, and damaged seriously. When the aspect ratio was 6:1, the crack developed vertically, and when the aspect ratio was less than 6:1, the secondary crack was about 90° from the upper crack.

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Section: Analysis Of Experimental Resultsmentioning

confidence: 99%

Study on the Expansion Law of Dry Shrinkage Cracks in Silty Clay

et al. 2022

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“…[39] integrated X-ray computed tomography (CT) and digital image processing technique to investigate the evolution of desiccation crack network, [40] estimated the pore-size distribution of soil by applying tomographic and synthetic 3D images. [41] studied the effect of boundary conditions and environment conditions on soils cracking mechanism using image analysis technique.…”

Section: -4 Image Analysismentioning

confidence: 99%

Numerical Study of Desiccation Cracking In Clayey Soil: A New FEM-MPM Coupling Method.

Jihen

Salma

Trabelsi

et al. 2021

Preprint

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Desiccation cracking is a critical phenomenon soliciting the soil hydro-mechanical behavior, and significantly affects the performance of soil in geotechnical engineering. For this reason, an increasing interest toward studying and simulating the soil crack propagation, after a severe exposure to dry conditions (induced by desiccation), has been noticed during the recent years. However, major gaps remain in the previously developed models to properly provide a realistic prediction of the cracks pattern scheme especially when using the classical Finite Element Method (FEM), widely used in the geotechnical application. In this study, owing to the limitation of this method in re-meshing and dealing with large deformation, the authors were prompted to couple FEM with a mesh-free method: The Material Point Method (MPM) to overcome the individual drawbacks of each method. The dominant influencing factors on soil desiccation cracking have been assessed through a desiccation test performed in climatic chamber and using a digital image processing technique (image analysis) for a quantitative description of the studied sample. A model that relates porosity with suction and tensile strength was used to study the effect of the shrinkage phenomena in desiccation term, and to simulate the crack propagation in a thin clayey soil layer using the Code_Bright software. Consequently, a clear and connected crack pattern was observed, the problem of mesh dependency was clearly overcome proving the validity of the approach and providing a further insight into the behavior of clayey soil exposed to desiccation factors.

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“…Stress distribution of neighboring cracks can also lead to an orthogonal crack pattern since cracks intersect each other. When increase in the bottom surface friction, the average crack width reduces, and less crack forms (Al-Jeznawi et al 2021). developed a novel micro-penetrometer to quantify the hydro-mechanical response of soil to the effect of drying.…”

Section: Introductionmentioning

confidence: 99%

Investigation on desiccation crack initiation and development of Tianjin Binhai dredger filling soils with fiber- reinforced

Li,

Zhang

et al. 2023

Preprint

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The increased porosity and permeability caused by cracking can pose a leachate hazard to municipal landfills. This paper describes a procedure for the evaluation of the cracking tendency during drying process on clayey soil. Based on desiccation experiments, it was found possible to estimate the moisture content, fractality and cracking characteristics, and the effect of fibre corporation incorporation on the cracking propagation of cohesive soils collected in dredger filling area in Tianjin. Based on this analysis, the following conclusions may be presented: fibre incorporation does not change the evaporation pattern of dry cracks, but can reduce the critical moisture content of cracking, which is reduced by 22.1% at 0.5% incorporation. The fractility also shows a continuous decreasing trend with the increase of fibre incorporation,which is reduced by 52.9% at 0.5% incorporation compared to the original state. The cracking characteristics were divided into three development stages. The results showed that the critical moisture content of the soil body was significantly reduced (18.8–7.8%) in stage II after fibre addition, and the cracks did not divide the soil body in stage III, which maintained the integrity of the soil body. The cracks had significantly decreased in length and width after fibre incorporation, and the number of cracks increased significantly. It indicates that the cracks cannot form through the cracks after fibre incorporation, and the crack resistance is obviously improved, which reduces the permeability of the soil.

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Using Image Analysis Technique to Study the Effect of Boundary and Environment Conditions on Soil Cracking Mechanism

Cited by 21 publications

References 41 publications

Study on the Expansion Law of Dry Shrinkage Cracks in Silty Clay

Study on the Expansion Law of Dry Shrinkage Cracks in Silty Clay

Numerical Study of Desiccation Cracking In Clayey Soil: A New FEM-MPM Coupling Method.

Investigation on desiccation crack initiation and development of Tianjin Binhai dredger filling soils with fiber- reinforced

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