A Study on the Mechanical Behavior of a Fiber-Clay Composite with Natural Fiber

Estabragh, A. R.; Bordbar, A. T.; Javadi, Akbar A.

doi:10.1007/s10706-012-9602-6

Cited by 42 publications

(18 citation statements)

References 25 publications

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“…The new performance depends on the ability of the additives to react with the mixing soil. There are four main properties of soil; strength, permeability, volume stability, and durability that can be enhanced with additives [20,21]. The choice of a specific additive depends on the type of soil, service that is required to serve and the surrounding environment.…”

Section: Stabilization Using Cementmentioning

confidence: 99%

“…The increase in shear strength of the granular soil stabilized with fibers was mostly from the apparent cohesion, and the contribution from the increase in normal confining stress was quite limited. Estabragh et al [20] studied the mechanical behavior of a fiber-clay composite with natural fiber. They found that the inclusion of the fiber reinforcement within the soil causes a decrease in pre-consolidation stress and increases compressibility and swelling indices.…”

Section: Soil Stabilization Using Fibersmentioning

confidence: 99%

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Fundamentals of soil stabilization

2017

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Section: Stabilization Using Cementmentioning

confidence: 99%

Section: Soil Stabilization Using Fibersmentioning

confidence: 99%

Fundamentals of soil stabilization

2017

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“…As a new type of soil reinforcement technology, fiberreinforced soil technology is widely used in embankment retaining wall, slope, soft soil foundation, and bridge abutment backfill engineering [16][17][18]. Because of the advantages of good dispersing ability, higher inertia, and uniform enhancement effect, a practical application prospect of fiber-reinforced soil has been attracting more attentions [19][20][21][22][23]. Random addition of dispersed palm fiber to clay can improve its consolidation and shear behavior [19].…”

Section: Introductionmentioning

confidence: 99%

“…Because of the advantages of good dispersing ability, higher inertia, and uniform enhancement effect, a practical application prospect of fiber-reinforced soil has been attracting more attentions [19][20][21][22][23]. Random addition of dispersed palm fiber to clay can improve its consolidation and shear behavior [19]. Hay of wheat was added to swelling clay to improve and stabilize its mechanical and deformation properties [20].…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Soil Embankment Slope Reinforced with Polypropylene Fiber under Freeze-Thaw Cycles

Gong

Han

et al. 2019

Advances in Materials Science and Engineering

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Polypropylene fiber is a common soil reinforcement material which is used to reinforce a common clay in northeast China. Numerical analysis method was performed to investigate the effect of polypropylene fibers on stability of embankment slope subjected to freeze-thaw cycles. The orthogonal experiments of three factors (freeze-thaw cycle, fiber content, and fiber length) and three levels were carried out, and the corresponding nine groups of specimens were made, whose shear strength parameters (internal friction angle and bond force) were measured by direct shear test. Then, the experimental results were analyzed by analysis of variance and range analysis so that the optimum fiber content and fiber length can be determined. The finite element model of typical high-fill soil slope of freeway in northeast China was established whose basic material parameters were taken as the parameters of shear strength of different freeze-thaw cycles under the optimum fiber content and fiber length. The concept of shear strength reduction was introduced into the finite element model, and the convergence of the finite element model was taken as the judging criterion of slope stability. Thus, stability analysis of soil embankment slope reinforced with polypropylene fiber under freeze-thaw cycles was realized. The results show that the addition of fibers improves the cohesion under the action of freeze-thaw cycles, and the internal friction angle is improved in the case of freezing and thawing. This phenomenon leads to the improvement of the stability of the embankment slope in a freeze-thaw cycle. The improvement is particularly noticeable in the case, and this improvement effect decreases as the number of freeze-thaw cycles increases.

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“…Studies carried out on reinforced soil with synthetic fibers have demonstrated that the principal parameters on the shear strength are soil particle size and shape (Maher & Gray, 1990;Al-Refeai, 1991;Sadek et al, 2010;Pino & Baudet, 2015), sand relative density (Consoli et al, 2009a;Sharma & Kumar, 2017), fiber orientation (Gray & Al-Refeai, 1986;Michawloski & Cermak, 2002), fiber percentage and length (Maher & Ho, 1994;Yetimoglu & Salbas, 2003;Consoli et al, 2007b;Li & Zornberg, 2012) and fiber aspect ratio (Maher & Woods, 1990;Ranjan et al, 1994;Chou et al, 2016). The understanding of the soil-fiber mechanism has led researchers to study ecofriendly materials as Tolêdo Filho et al (1997), Ahmad et al (2010) and Estabragh et al (2013) developed studies using natural fibers to reinforce silty sand, clays and mortar, respectively. A review study about synthetic (PP, PE, PET, Nylon, Glass, PVA; and steel) and natural (coir, sisal, palm, jute, flax, straw, bamboo; and cane) fibers was carried out by Hejazi et al (2012) showing that, in all cases, fibers help to reduce the brittleness of the composite soil.…”

Section: Introductionmentioning

confidence: 99%

The Performance of a Sand Reinforced with Coconut Fibers Through Plate Load Tests on a True Scale Physical Model

Sotomayor¹,

Casagrande²

2018

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The use of recycled materials has experienced a growing global interest in the last decades. Products like natural fibers are being studied to replace synthetic fibers in some applications because they are renewable resources that have a lower cost. Fibers can be used as reinforcement for covers of landfill sites, landfilling over soft soils, and evapotranspiration covers. The use of coconut fibers represent an opportunity to reduce the environmental issue waste of this fruit in tropical countries. The main objective of this research is to evaluate the load-settlement behavior of non-reinforced and reinforced sand with coconut fibers using either a random or a layered distribution. In that sense, plate load tests with both non-reinforced and reinforced sand were performed fixing the moisture content and percentage of fibers for all tests. The results show that the greatest settlement reduction is obtained with layered distribution. Conversely, random distribution provides more ductility and, consequently, the mixture can resist a highest load than layered distribution.

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A Study on the Mechanical Behavior of a Fiber-Clay Composite with Natural Fiber

Cited by 42 publications

References 25 publications

Fundamentals of soil stabilization

Fundamentals of soil stabilization

Stability Analysis of Soil Embankment Slope Reinforced with Polypropylene Fiber under Freeze-Thaw Cycles

The Performance of a Sand Reinforced with Coconut Fibers Through Plate Load Tests on a True Scale Physical Model

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