Strength enhancement of the subgrade soil of unpaved road with geosynthetic reinforcement layers

Singh, Meenakshi; Trivedi, Ashutosh; Shukla, Sanjay Kumar

doi:10.1016/j.trgeo.2019.01.007

Cited by 62 publications

(22 citation statements)

References 15 publications

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“…However, a geogrid layer placed at a depth of approximately 1 to 1.2 times the diameter of the plate load attained the highest CBR value among reinforced specimens [3]. In the case of a higher number of reinforcement layers, increasing the number of reinforcement layers from one to two led to the higher CBR behavior of the geosynthetic-reinforced fine soil [7,9].…”

Section: Cbr Values Of Unreinforced and Nowoven Geotextile Reinforced...mentioning

confidence: 99%

“…The CBR value is a common index property used to evaluate the strength and resilient modulus of subgrade soil and base course materials for designing the pavement structure [1]. For reinforced soil, the CBR test was applied to investigate the effects of geogrids [2][3][4][5][6][7] and geotextiles [8][9][10] on improving its bearing capacity.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, using a single layer of either geogrid or jute fabric, other studies illustrated that placing a single reinforcement layer in the middle of the base layer was the most effective for reducing the settlement of reinforced pavement [2,4,6]. In another study, the geosynthetic reinforcement layer should be placed either at mid-specimen height or between the upper one-third and middle layers to achieve the highest CBR value [7]. For clean sand, sandy clay, and clayey silt, the optimal location of a single geogrid layer was at 72% to 76% of the specimen height of reinforced soil specimens [3].…”

Section: Introductionmentioning

confidence: 99%

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Bearing capacity and failure mechanism of nonwoven geotextile reinforced clay: A verification

Nguyễn

2022

STCE

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The paper presents a series of laboratory tests for California Bearing Ratio (CBR) to investigate the bearing capacity and the failure mechanism of nonwoven geotextile reinforced clay. The variation of the tests included the number of reinforcement layers and compaction energy. The results indicate that the nonwoven geotextile layers improve up to 49.5% of the CBR of the reinforced clay specimens. A cross-grab stick apparatus was developed to determine the deformed shape of the embedded reinforcement layer in the reinforced specimens after CBR tests. The obtained results illustrate the membrane tension effect of the geotextile layers to enhance the bearing capacity of the reinforced soil specimens. Last, the failure mechanisms of the nonwoven geotextile reinforced specimens were verified using measurement results of maximum relative deflection in reinforcement layers.

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Section: Cbr Values Of Unreinforced and Nowoven Geotextile Reinforced...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bearing capacity and failure mechanism of nonwoven geotextile reinforced clay: A verification

Nguyễn

2022

STCE

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“…Thus, the plastic bottle is easier to rupture than plastic straw. Moreover, researchers have found that the reinforcement of high ductility or stiffness of reinforcement material can increase the bearing ratio of soil [39].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Characteristic Properties of Plastic Wastes: Possibility of Reinforcing Material for Soil

Yasmin

Ismail

Mohamed³

et al. 2021

Jurnal Teknologi

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The current statistic shows that the percentage of plastic has significantly increased in the landfill and leads to environmental issues due to its non-biodegradable characteristic. However, these challenges can be turned into opportunities by reusing and recycling such waste for civil engineering applications. Hence, the focuses of this paper are to analyze the possibility of utilizing plastic waste in the soil reinforcement field using VOSviewer software and to evaluate the chemical, thermal, physical, and mechanical properties of the plastics (plastic straw, plastic bottle, and plastic bag). The data for this study was collected from the articles published in Scopus. Nevertheless, there are very limited articles that relate soil reinforcement with the thermal, chemical, physical, and mechanical properties of plastic waste. Therefore, this paper aims to evaluate the properties of plastic waste, which were plastic bottles, plastic bags, and plastic straw. The properties of plastic waste have been investigated to ensure it meets the requirement for soil reinforcement technology. The Fourier transform infrared (FTIR) spectra indicated the presence of carbon and hydrogen chains in those plastics waste. The plastic straw, plastic bag, and plastic bottle were degraded at 382°C, 456°C, and 449°C, respectively. This finding indicated that all of these plastics waste were thermally stable in the tropical temperature. Moreover, the densities of the plastics waste were less than 1 g/cm3, which contributes to the lightweight material and it’s very crucial to eliminating the self-loading from the reinforcement material.

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“…Geosynthetics are polymeric (synthetic or natural) materials that include a wide variety of products (e.g., geotextiles [GTs] and geogrids [GGs]) for various civil engineering applications. In pavement engineering, GTs and GGs are mainly used to reinforce the subgrade soils or to separate the soil layer from the aggregate layer ( 7 – 9 ). A reinforcement function can be expected from both GTs and GGs, whereas the separation function is mainly associated with the use of GTs.…”

mentioning

confidence: 99%

Full-Scale Laboratory Evaluation of the Effectiveness of Subgrade Soil Stabilization Practices for Portland Cement Concrete Pavements Patching Applications

Behnood

Olek

2020

Transportation Research Record: Journal of the Transportation R

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Adequate quality of subgrade under patched areas can extend the service life of concrete pavements and reduce their maintenance costs. In this study, the performance of various subgrade stabilization scenarios was evaluated and compared with each other in a full-scale laboratory-based setup. For this purpose, a test box with the footprint of 6 × 6 ft and a height of 4 ft was constructed using C steel channels. The test box was used to investigate the effects of various types of soil stabilization methods, such as chemical (cement) stabilization, use of aggregate base course (ABC), geogrid (GG) and geotextile (GT) with ABC, GT with cement-stabilized soil, GT with in-situ compacted soil, flowable fill, and lean concrete. The test results showed that all stabilization techniques successfully improved the performance of the subgrade layer by decreasing the deformation under the fatigue loading representing a single axle load of 9,000 lbf/tire. The use of GT with aggregate-based layers was found to significantly reduce the amount of settlement. Subgrade layers stabilized with GG also experienced lower values of deformations compared with the unmodified (control) section. However, GG was not as effective as GT. The use of cement-treated aggregate and lean concrete reduced the deformations to negligible levels.

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Strength enhancement of the subgrade soil of unpaved road with geosynthetic reinforcement layers

Cited by 62 publications

References 15 publications

Bearing capacity and failure mechanism of nonwoven geotextile reinforced clay: A verification

Bearing capacity and failure mechanism of nonwoven geotextile reinforced clay: A verification

Characteristic Properties of Plastic Wastes: Possibility of Reinforcing Material for Soil

Full-Scale Laboratory Evaluation of the Effectiveness of Subgrade Soil Stabilization Practices for Portland Cement Concrete Pavements Patching Applications

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