Influence of Polymeric Fiber Reinforcement on Strength Properties of Sand-stabilized Expansive Soil

Öncü, Şerife; Bilsel, Huriye

doi:10.1080/03602559.2016.1211699

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…However, further increase in the fiber content resulted in a decrease in the shear strength. The synthetic polymer-based fibers can also be used as the secondary additives to increase the ductility of stabilized soils that are mainly used as barriers in landfills or subgrade soils beneath roadways [ 133 ]. Yılmaz and Sevencan [ 134 ] added polypropylene fiber to a soil mixed with fly ash and the fiber addition led to an increase in the unconfined compressive strength.…”

Section: Some Geotechnical Engineering Applications As Potential Source For Microplasticsmentioning

confidence: 99%

“…Due to the fiber addition, both the swell index and the shrinkage strain of the expansive soil increased [ 135 ]. Öncü and Bilsel [ 133 ] added a polymeric fiber with a content of 2% by dry weight to an expansive soil-sand mixture. According to the results of the laboratory tests, compressive and split tensile strength values of the soil mixture increased.…”

Section: Some Geotechnical Engineering Applications As Potential Source For Microplasticsmentioning

confidence: 99%

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Microplastic Contamination in Soils: A Review from Geotechnical Engineering View

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Ozhan

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Microplastic contamination is a growing threat to marine and freshwater ecosystems, agricultural production, groundwater, plant growth and even human and animal health. Disintegration of plastic products due to mainly biochemical or physical activities leads to the formation and existence of microplastics in significant amounts, not only in marine and freshwater environments but also in soils. There are several valuable studies on microplastics in soils, which have typically focused on environmental, chemical, agricultural and health aspects. However, there is also a need for the geotechnical engineering perspective on microplastic contamination in soils. In this review paper, first, degradation, existence and persistence of microplastics in soils are assessed by considering various studies. Then, the potential role of solid waste disposal facilities as a source for microplastics is discussed by considering their geotechnical design and addressing the risk for the migration of microplastics from landfills to soils and other environments. Even though landfills are considered as one of the main geotechnical structures that contribute to the formation of considerably high amounts of microplastics and their contamination in soils, some other geotechnical engineering applications (i.e., soil improvement with tirechips, forming engineering fills with dredged sediments, soil improvement with synthetic polymer-based fibers, polystyrene based lightweight fill applications), as potential local source for microplastics, are also mentioned. Finally, the importance of geotechnical engineering as a mitigation tool for microplastics is emphasized and several important research topics involving geotechnical engineering are suggested.

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Section: Some Geotechnical Engineering Applications As Potential Source For Microplasticsmentioning

confidence: 99%

Section: Some Geotechnical Engineering Applications As Potential Source For Microplasticsmentioning

confidence: 99%

Microplastic Contamination in Soils: A Review from Geotechnical Engineering View

Monkul

Ozhan

2021

Polymers

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Durable and ductile double-network material for dust control

Tirkolaei

Hua

et al. 2020

Geoderma

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Dust generation is a worldwide issue due to its serious deleterious effects on the environment, human health and safety, and the economy. Although various dust suppression methods have been used for decades, some critical drawbacks in state-of-the-art technology still remain unsolved, such as short-lasting, ground water impact, and prone to water. This work reports a soil stabilizer based on non-toxic material and forms a ductile and durable double-network in soil, namely "D 3 soil stabilizer", which not only improves soil mechanical toughness of surface soil but also suppresses dust generation. A copolymer comprising hydrophilic and hydrophobic components combined with enzyme-induced carbonate precipitation is utilized as an in-situ gelation binder to soil particle. The tunable hydrophobic-to-hydrophilic component ratio minimizes undesirable soil matrix expansion and mechanical strength loss upon experiencing wet-dry processes, while still retains good water affinity. We further demonstrated controllable treatment depth by fine-tuning precursor composition, which is essential to minimize environmental impact. The double-network morphology with carbonate precipitate embedded uniformly in polymer matrix is observed via microscopic imaging. The nature of outstanding ductility, high durability against water, and good long-term stability were supported by systematic unconfined compressive strength (UCS) measurements on treated soil, which show strong inter-particles binding, good retention of peak strength, increased strain at peak strength, and increased toughness after soil samples have experienced wet-dry processes.

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Influence of Polymeric Fiber Reinforcement on Strength Properties of Sand-stabilized Expansive Soil

Cited by 2 publications

References 15 publications

Microplastic Contamination in Soils: A Review from Geotechnical Engineering View

Microplastic Contamination in Soils: A Review from Geotechnical Engineering View

Durable and ductile double-network material for dust control

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