Laboratory Investigation in the Improvement of Subgrade Characteristics of Expansive Soil Stabilised with Coir Waste

Peter, Leema; Jayasree, P. K.; Balan, K.; Raj, S. Alaka

doi:10.1016/j.trpro.2016.11.110

Cited by 52 publications

(12 citation statements)

References 7 publications

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“…Results exhibited a linearly increasing trend in both soaked and unsoaked CBR value. A similar study by Peter et al [12] investigated the behavior of soft soil stabilized with varying concentrations of coir pith (0% to 3%) and coir fiber (0% to 1%) by conducting California bearing ratio (CBR) tests and static triaxial tests. The optimum stabilization scheme found in the study was 2% coir pith and 6% short coir fiber, which exhibited the greatest improvements in CBR value.…”

Section: Coconut Coir As Soil Reinforcementmentioning

confidence: 99%

Unconfined Compressive Strength of Clay Reinforced With Kerosene-Treated Coir Fiber

Torio-Kaimo¹

2020

GEOMATE

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The need for ground modification is more prevalent as the availability of good site conditions decrease. Among the available methods of ground modification, soil reinforcement is emerging as a promising alternative. Fiber reinforcement involves mixing fibers with soil to improve its strength characteristics. Natural fibers have the following advantages over synthetic: affordability, bulk availability, and eco-friendliness. Coir fiber has the greatest tensile strength and slowest rate of biodegradation among natural fibers. This study presents the effect of kerosene-coated coir on strength and stress-strain response of a cohesive soil. Preliminary soil tests were performed and the soil was classified as CH or high-plasticity clay. Water absorption capacity tests revealed that kerosene reduces moisture intake of coir by up to 170%. Reconstituted samples, with fiber concentrations ranging from 0% to 2% by dry weight of soil, were tested for unconfined compressive strength in optimum moisture and dry states. Results showed that incorporation of coir improved the strength and stress-strain response of high-plasticity clay by as much as 52% compared to unreinforced samples. Aside from increasing peak strength, addition of coir also improved the post-peak behavior of the samples. Results show improved ductility in the coir-reinforced samples tested at optimum moisture condition. An increase in the elastic modulus, by as much as 78%, was also observed. These improved performance was exhibited at 1.5% fiber content.

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Section: Coconut Coir As Soil Reinforcementmentioning

confidence: 99%

Unconfined Compressive Strength of Clay Reinforced With Kerosene-Treated Coir Fiber

Torio-Kaimo¹

2020

GEOMATE

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“…Also, studies widely acknowledged that the overall behavior of reinforced soil depends not only on the optimum quantity of coir fiber but also quality of treated coir fiber [ 14 , 97 ]. Coir RDFS increases the strength (CBR value) of expansive soft soil favorably by 335% at optimum 0.6% short coir fiber content [ 100 ]. Also, the optimum shear as well as UCS behavior of silty sand has been observed at the coir fiber content of 0.75% [ 51 ].…”

Section: Soil-natural Fiber Reinforcing Applicationsmentioning

confidence: 99%

A State-of-the-Art Review on Soil Reinforcement Technology Using Natural Plant Fiber Materials: Past Findings, Present Trends and Future Directions

2018

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Incorporating sustainable materials into geotechnical applications increases day by day due to the consideration of impacts on healthy geo-environment and future generations. The environmental issues associated with conventional synthetic materials such as cement, plastic-composites, steel and ashes necessitate alternative approaches in geotechnical engineering. Recently, natural fiber materials in place of synthetic material have gained momentum as an emulating soil-reinforcement technique in sustainable geotechnics. However, the natural fibers are innately different from such synthetic material whereas behavior of fiber-reinforced soil is influenced not only by physical-mechanical properties but also by biochemical properties. In the present review, the applicability of natural plant fibers as oriented distributed fiber-reinforced soil (ODFS) and randomly distributed fiber-reinforced soil (RDFS) are extensively discussed and emphasized the inspiration of RDFS based on the emerging trend. Review also attempts to explore the importance of biochemical composition of natural-fibers on the performance in subsoil reinforced conditions. The treatment methods which enhances the behavior and lifetime of fibers, are also presented. While outlining the current potential of fiber reinforcement technology, some key research gaps have been highlighted at their importance. Finally, the review briefly documents the future direction of the fiber reinforcement technology by associating bio-mediated technological line.

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“…Coir waste consist of coir pith and coir fibre is a by-product of coir manufacturing industry obtained from coconut husk during the extraction of coir fibre [6]. The various proportions are made for coir pith and coir fibre mixed with soil.…”

Section: B Coir Wastementioning

confidence: 99%

A Review on Stabilization of Expansive Soil with various admixtures

Murali¹,

Ashok²,

Giridharan³

et al. 2018

IJSRP

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Expansive soil or clayey soil which can change its volume when the water content is available i.e., swelling and shrinkage occurs. In urban areas, borrow earth is not easily available which has to be hauled from a long distance. Quite often, large areas are covered with highly plastic and expansive soil, which is not suitable for such purpose. It results on damage of building structures and road pavements due to its low strength and high expansion. The usage of admixtures can adversely improve the soil properties, thus stabilizing the clayey soil. A critical review on various admixtures used for stabilization of expansive soil is discussed in this paper.

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Laboratory Investigation in the Improvement of Subgrade Characteristics of Expansive Soil Stabilised with Coir Waste

Cited by 52 publications

References 7 publications

Unconfined Compressive Strength of Clay Reinforced With Kerosene-Treated Coir Fiber

Unconfined Compressive Strength of Clay Reinforced With Kerosene-Treated Coir Fiber

A State-of-the-Art Review on Soil Reinforcement Technology Using Natural Plant Fiber Materials: Past Findings, Present Trends and Future Directions

A Review on Stabilization of Expansive Soil with various admixtures

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