Investigation on the interfacial mechanical behavior of wave-shaped fiber reinforced soil by pullout test

Tang, Chao‐Sheng; Jian, Li; Wang, Deyin; Shi, Bin

doi:10.1016/j.geotexmem.2016.05.001

Cited by 57 publications

(20 citation statements)

References 59 publications

(67 reference statements)

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“…In earlier times, people mixed sand with geomembrane/geotextile or cement/lime/fly ash to improve the physical and engineering behaviors of the soil to achieve a specific level of performance [3,4,5,6,7]. With in-depth research, fibers attracted the interested attention of scholars and researchers with several strengths [8,9,10,11], e.g., it is easily mixed randomly and evenly with soil, it avoids forming some potential weak planes with great strength, and it has gained plenty of important achievements [12,13,14,15]. The influence of fiber types including synthetic fiber, plant fiber, fiber sizes (length, diameter), and fiber contents (i.e., the weight ratio of fibers to soil) on the resistance of liquefaction, strength behaviors, and mechanical mechanism are researched in depth.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Shear Behaviors of Polymer-Sand Composite Materials after Immersion

Jin

Bai

et al. 2018

Polymers

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Sand mixed with geotextile/fiber/cement/lime or non-traditional chemical additives to form composite materials is recognized as an effective method for improving the sand properties. In this work, the variation in properties of composite materials after immersion is reported which has rarely appeared in the literature. The focus of this study is to evaluate the shear behaviors of polymer-sand composite material after immersion with direct shear tests. Several factors which may influence the shear behaviors after immersion are analyzed. The results demonstrate that this composite material still has good shear behaviors after immersion when compared to the purely sand material. The shear behaviors are improved with an increment in the curing time, polymer content and sand dry density while there is a decrease in the shear behaviors with increasing immersion time. The interaction between sand particles and the polymer are analyzed with Scanning Electron Microscope (SEM). The polymer membranes are formed by polymer enwrapping and connected sand particles to build an elastic and viscous structure in the sand that increases the interlocking forces between sand particles and decreases the void ratio of this material. The membranes are softened in water resulting in a decrease in the shear strength. Moreover, other factors affect the shear behaviors by improving the completeness and stability of this structure.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study on the Shear Behaviors of Polymer-Sand Composite Materials after Immersion

Jin

Bai

et al. 2018

Polymers

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“…ese two failure modes are closely related to the magnitude of the interfacial force. e interfacial interaction of reinforced soil involves the bonding force of the fiber-soil interface, the friction between the fiber and the solidified cementitious matter, and the anchoring effect between the crystals on the fiber surface and the soil [36][37][38][39].…”

Section: Analysis Of the Reinforcing Mechanism Of Fiber-reinforcedmentioning

confidence: 99%

Performance of Polypropylene Fiber‐Reinforced Solidified Soil

Cheng

Weng

Tong

et al. 2021

Advances in Civil Engineering

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Urgent repair and construction of airstrips is a research hotspot in global airport engineering. Selecting the proper structural materials is a key component of the airstrip repair process. First, with unconfined compressive strength and splitting tensile strength, the fiber length and content of polypropylene (PP) fiber-reinforced solidified soil were optimized. Then, using a scanning electron microscope, the reinforcing mechanism of PP fiber on soil and the influence mechanism of fiber parameters on fiber-reinforced soil were discussed and analyzed. Lastly, a full-scale test section was paved, on which static and dynamic loading tests were performed to verify the carrying capacity and deformation characteristics of the full-scale test section. The above research provides a theoretical foundation and data support for the urgent repair and construction of airstrip. Results indicate that PP fiber with length of 12 mm and fiber content of 0.3% has optimal performance and economic cost. The reinforcing mechanism of fiber-reinforced soil can be summarized to be the effect of a one-dimensional lacing wire and the effect of a three-dimensional network structure. Fibers show two failure modes of pull-out and tensile failure. After 20000 dynamic loading cycles, the stress at the bottom of each structural section varies less, the graded plastic deformation is stable, and the cumulative plastic deformations of the fiber-reinforced soil base, solidified soil base, and cemented soil base pavement structures are 0.83 mm, 0.93 mm, and 1.2 mm, respectively. Pavement structure composed of fiber-reinforced solidified soil can meet the load capacity requirements for use in airstrips under the characteristics of time-sensitive application.

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“…Soil reinforced with fibres in optimum quantity is proven to be one of the most efficient and economical means of ground improvement technique over the past few decades. Fibre reinforcement not only improves the unconfined compressive strength and shear strength properties of the soil (Cai et al, 2006;Consoli et al, 2010), it also increases the tensile strength (Tang et al, 2016;Cristelo et al, 2017). Both the natural and synthetic fibres are used as reinforcement to enhance the mechanical properties of the soil.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies are there on the soil reinforced with natural fibre (Prabakar and Sridhar, 2002;Ghosh et al, 2005;Babu and Vasudevan, 2008;Chaple and Dhatrak, 2013;Singh and Bagra, 2013). The major drawback of using natural fibre is its biodegradation caused by microorganisms in soil which may reduce the long term applicability of the reinforcement (Tang et al, 2016). Thus it gives rise to the use of synthetic fibres as soil reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Bearing Capacity of a Pavement Resting on Fibre Reinforced Embankment Considering Soil Spatial Variability

Choudhuri

Chakraborty

2021

Front. Built Environ.

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This paper intends to examine the influence of spatial variability of soil properties on the probabilistic bearing capacity of a pavement located on the crest of a fibre reinforced embankment. An anisotropic random field, in combination with the finite difference method, is used to carry out the probabilistic analyses. The cohesion and internal friction angle of the soil are assumed to be lognormally distributed. The Monte Carlo simulations are carried out to obtain the mean and coefficient of variation of the pavement bearing capacity. The mean bearing capacity of the pavement is found to decrease with the increase in horizontal scale of fluctuation for a constant vertical scale of fluctuation; whereas, the coefficient of variation of the bearing capacity increases with the increase in horizontal scale of fluctuation. However, both the mean and coefficient of variation of bearing capacity of the pavement are observed to be increasing with the increase in vertical scale of fluctuation for a constant horizontal scale of fluctuation. Apart from the different scales of fluctuation, the effects of out of the plane length of the embankment and randomness in soil properties on the probabilistic bearing capacity are also investigated in the present study.

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Investigation on the interfacial mechanical behavior of wave-shaped fiber reinforced soil by pullout test

Cited by 57 publications

References 59 publications

An Experimental Study on the Shear Behaviors of Polymer-Sand Composite Materials after Immersion

An Experimental Study on the Shear Behaviors of Polymer-Sand Composite Materials after Immersion

Performance of Polypropylene Fiber‐Reinforced Solidified Soil

Probabilistic Bearing Capacity of a Pavement Resting on Fibre Reinforced Embankment Considering Soil Spatial Variability

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