Behavior and Modeling of Fiber-Reinforced Clay under Triaxial Compression by Combining the Superposition Method with the Energy-Based Homogenization Technique

Wang, Yixian; Guo, Panpan; Dai, Feng; Li, Xian; Zhao, Yanlin; Liu, Yan

doi:10.1061/(asce)gm.1943-5622.0001313

Cited by 91 publications

(42 citation statements)

References 57 publications

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“…Compacting the soil that will be under a foundation is an essential procedure to ensure the stability of the structure. Improving the soil beneath the foundation can be accomplished by a number of different methods including static or dynamic rollers and fiber reinforcement [1][2][3]. However, static or dynamic rollers are limited and can only compact the soil to a relatively shallow depth (0.2-1.0 m) [4] and fiber reinforcement is expensive and not environment-friendly for large construction projects [5].…”

Section: Introductionmentioning

confidence: 99%

“…However, static or dynamic rollers are limited and can only compact the soil to a relatively shallow depth (0.2-1.0 m) [4] and fiber reinforcement is expensive and not environment-friendly for large construction projects [5]. Compared with the above methods, dynamic compaction (DC) is a suitable method with the following advantages: (1) high density compaction to a considerable depth; (2) wide applicability in soils with different soil properties and different water contents; (3) simplicity of operation using widely available and simple equipment; (4) low cost. Menard [6] first introduced DC for construction and conducted systematically research on the method.…”

Section: Introductionmentioning

confidence: 99%

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Deformation Analysis of Granular Soils under Dynamic Compaction Based on Stochastic Medium Theory

Hou³

et al. 2019

Mathematical Problems in Engineering

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Dynamic compaction (DC) is widely used to improve the mechanical properties of soils and other granular fill material upon which foundations or other structures are to be built. To calculate the inner deformation induced by DC, a computational model based on stochastic medium theory was developed to deduce the amount of deformation in the fill from the geometry of the DC crater. For this model, the tamper-soil system was simplified to an axisymmetric geometry and the probability of any unit of material below the crater being deformed can be calculated. Subsequently, the deformation at any point can be obtained by integration. Input parameters for the model were established by back analysis using the results from a DC field test and published data. Comparing the model results to results from actual and simulated DC programs shows that the computational model is useful for calculating deformation induced by DC without the need to consider the constitutive model of the soil.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deformation Analysis of Granular Soils under Dynamic Compaction Based on Stochastic Medium Theory

Hou³

et al. 2019

Mathematical Problems in Engineering

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“…A discontinuous structural plane, such as rock joints and fractures, is an important rock mass component that is an essential reason why a rock mass, as an engineering medium, has different characteristics from other engineering media [1][2][3]. e existence of a structural plane damages the continuity and integrity of a rock mass, causes a rock mass to have unevenness and anisotropy, and greatly reduces the strength and stability of an engineering rock mass [4][5][6][7][8][9][10][11]. In practical engineering, the surface morphology of a discontinuous structural plane in a natural rock mass is irregular [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology of Structural Plane and Effects of the Shear Strength Parameters

Yang

Cheng

2018

Advances in Civil Engineering

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e surface morphology of a discontinuous structural plane in a natural rock mass is irregular. In studies on the shear strength of discontinuous structural planes, Barton introduced the joint roughness coefficient (JRC) to describe and calibrate the morphological characteristics of a rough structural plane. To describe Barton's typical rough profile model, researchers commonly conduct a comparison based on a standard curve.is approach does not guarantee graphic precision. With subjective comparison reference drawing, the size and angle of a structural plane cannot be quantitatively controlled, and small bumps cannot be described. When the influence of the roughness coefficient of a rock surface is discussed, errors are caused by comparing Barton's typical roughness profile model and a general structural surface model. is paper proposed a new method to simulate Barton's typical structural surface. A numerical model of a complex structural plane is built automatically. e effects of cohesion and internal friction angle on the shear strength of the structural plane are discussed by changing the value of the shear strength parameters.

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“…In accordance with an understanding of the factors that influence the development of desiccation cracks, methods for reducing the development of desiccation cracks in clayey soils have been proposed. The stability of clayey soils is essential to reduce the development of desiccation cracks (Wang et al, 2017, 2018; Yuan et al, 2015, 2017). Additive materials such as silica fume and fiber have been used to stabilize clayey soils to reduce the development of desiccation cracks (Kalkan 2009; Harianto et al, 2008).…”

mentioning

confidence: 99%

Influence of Soda Content on Desiccation Cracks in Clayey Soils

Yang

Yuan

2019

Soil Science Soc of Amer J

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Alkaline clayey soil is considered to be a degraded soil, which causes serious issues in engineering and construction projects. The formation and development of desiccation cracks in alkaline clayey soils is a complex process affecting the strength, stability, and permeability of these soils. Therefore, to investigate how soda content can inhibit the development of desiccation cracks in alkaline clayey soils in Ulanhot, Inner Mongolia, China, free desiccation tests were performed to examine the cracks in alkaline clayey soil samples with different soda (Na2CO3) contents in the laboratory. During the cracking process, the changes in water content and the occurrence and evolution of cracks were recorded with a camera. Digital image processing was performed to analyze the structure characteristics of the surface cracks. The results indicated that the characteristics are influenced by the different soda contents. The soda inhibited the development of desiccation cracks in alkaline clayey soils. Three stages were found in the process of desiccation cracking in accordance with the rate of water loss: the residual, normal, and structural shrinkage stages. At <0.4 mol L−1 Na2CO3, the “three straight lines” model could be used to describe the volume shrinkage. However, at >0.4 mol L−1 Na2CO3, the structural shrinkage stage disappeared. Moreover, based on the general soil volume change equation and fractal theory, a model was formulated to quantitatively explain the relationship between the fractal dimension and the volume changes in the soil. The experimental results and equations are important for reducing subgrade deformation and slumps. Core Ideas Soda content can inhibit the development of desiccation cracks in clayey soils. There are three stages in the process of desiccation cracking in alkaline clayey soil. A model is formulated to explain the fractal dimension and the volume changes in the alkaline clayey soil. The structural shrinkage stage will disappear when Na2CO3 is >0.4 mol L−1.

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Behavior and Modeling of Fiber-Reinforced Clay under Triaxial Compression by Combining the Superposition Method with the Energy-Based Homogenization Technique

Cited by 91 publications

References 57 publications

Deformation Analysis of Granular Soils under Dynamic Compaction Based on Stochastic Medium Theory

Deformation Analysis of Granular Soils under Dynamic Compaction Based on Stochastic Medium Theory

Surface Morphology of Structural Plane and Effects of the Shear Strength Parameters

Influence of Soda Content on Desiccation Cracks in Clayey Soils

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