Performance of Geotextile-Reinforced Bases for Paved Roads

Saghebfar, Milad; Hossain, Mustaque; Lacina, Bruce A.

doi:10.3141/2580-04

Cited by 24 publications

(9 citation statements)

References 14 publications

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“…Both woven and non-woven geotextiles have been widely used for reinforcement and hydraulic applications in pavement design ( 17 ). The reinforcement action of the geotextile provides bearing to the repetitive axle loads and distributes them to the subgrade soil ( 21 ). Additionally, the geotextile layer acts as a separation between the coarse and fine materials, laterally restrains the layers, and provides a tensioned membrane effect under the pavement, which helps to improve the pavement performance under long-term traffic loads ( 22, 23 ).…”

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confidence: 99%

Evaluating the Performance of Wicking Geotextile in Providing Drainage for Flexible Pavements Built over Expansive Soils

Biswas

Puppala

Khan

et al. 2021

Transportation Research Record: Journal of the Transportation R

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The longevity and performance of a pavement section depend on the characteristics of the subgrade soil. A majority of the pavements in North Texas, U.S., are constructed on expansive soils. The deterioration of the pavement performance because of rutting, cracking, and differential heaving is a regular phenomenon in the regions predominantly distributed with expansive soils. The pavements, particularly those built for low-volume traffic conditions, experience distress because of the high swelling and shrinkage characteristics of the underlying problematic soils. Geosynthetics have been traditionally used to improve such poor subgrades because of their many benefits, such as ease of installation, and ample mechanical and hydraulic properties. In the last decade, a newly available wicking geotextile, with a moisture redistribution capacity, has been developed to improve the performance of pavements constructed over expansive and frozen soils. In this study, small-scale laboratory and full-scale field studies were conducted to comprehend the wicking ability of this innovative geotextile in an expansive soil environment. Full-scale test sections were constructed with reclaimed asphalt pavement aggregate and traditional crushed stone aggregates in the base layer near North Texas. Details of the construction and instrumentation procedure are discussed in this paper. A comparative study between the performance of the pavement sections subjected to traffic loads and moisture intrusion was also performed. Furthermore, the rutting life of the sections, estimated using a linear elastic model, was compared and validated using the in situ data. The observations during the initial phase indicated that the wicking geotextile has the potential to improve the long-term pavement performance.

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confidence: 99%

Evaluating the Performance of Wicking Geotextile in Providing Drainage for Flexible Pavements Built over Expansive Soils

Biswas

Puppala

Khan

et al. 2021

Transportation Research Record: Journal of the Transportation R

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“…In the pavements field, many researchers believe that the reinforcement structure employed in asphalt mixture layers can effectively improve the mechanical performance of asphalt pavement (1)(2)(3)(4)(5)(6)(7). Geosynthetic materials in widespread use for pavement applications are geocells, geogrids, and geotextiles.…”

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confidence: 99%

“…Pasquini et al observed the performance of geogrid reinforced asphalt pavement, based on the results of a real-scale field trial, the interface shear test, and the flexural test ( 5 ). Saghebfar M et al analyzed the reinforcement effect of the geotextile on the pavement structure with full-scale experiments ( 7 ). However, geogrid and geotextile are both 2D structures, generally arranged at the bottom of the asphalt layer.…”

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confidence: 99%

Full-Scale Field Investigation of Asphalt Pavements Reinforced with Geocells

Wang

Zhang

Zhu

et al. 2020

Transportation Research Record: Journal of the Transportation R

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Based on full-scale field trials, this study investigated the mechanical properties of geocell-reinforced asphalt pavements. The field site is a four-lane highway in Hubei province in China. The dynamic load tests were performed for the geocell-reinforced and unreinforced pavement under three different conditions of axle loads and running speeds. The static load tests were carried out under three different axle loads which were the same as the dynamic load tests. The dynamic and static responses were studied in relation to the peak of the longitudinal strain, creep strain, and the improvement factors. Field trial results revealed that the longitudinal strain peak value of the pavement structure reinforced by Polypropylene geocell was significantly reduced in comparison with the pavement response without geocell. In addition, the reinforcement system had a certain inhibiting effect on the creep strain and the improvement factor increased with increasing axle load and decreased with increasing speed. Under 100 kN axle load, the improvement factors were 0.78, 0.68, 0.54, and 0.39 at speeds of 0, 20, 40, and 60 km/h. Under 150 kN axle load, the improvement factors were 0.96, 0.89, 0.75, and 0.61 at speeds of 0, 20, 40, and 60 km/h. Under 200 kN axle load, the improvement factors are 1.21, 1.1, 0.97, and 0.79 at speeds of 0, 20, 40, and 60 km/h. This research helps to provide a new and effective method of asphalt pavement reinforcement.

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“…AASHTO M-288 ( 2 ) defines the function of geotextiles in roadway applications as subsurface drainage (i.e., filtration), separation, stabilization, and enhancement (which combines all three functions). Several field studies have previously been conducted with woven geotextile placed in between subgrade and base course in pavement profiles ( 3 – 6 ). Some of these studies involved exhuming geotextiles after they had been in service for up to 12 years and others were primarily based on monitoring performance.…”

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confidence: 99%

Evaluation of the Long-Term Performance of Woven Geotextile Used between Base Course and Subgrade of a Paved Road

Ullah

Tanyu

Güler

et al. 2019

Transportation Research Record: Journal of the Transportation R

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The purpose of this research was to investigate the properties of the exhumed geotextile from a low-volume road on the Virginia Department of Transportation network. The exhumed geotextiles have been in service for 23 years, which provided an opportunity to evaluate the longevity of the materials as well as to make assessments of how it relates to the changes in material properties. During this investigation, subgrade and base course materials were also obtained from the same site and an experimental program was developed to evaluate the effectiveness of the exhumed geotextiles for separation, stabilization, and filtration for the base course thicknesses of 4, 6, and 8 in. The results from this study combined with the results from the previous studies conducted at the same site showed that when the geotextile is placed between the subgrade and base course, the thinner the pavement section, the more evident the effectiveness of the geotextile improvements. One important finding of this research was that the placement of a geotextile reduced the particle breakage caused by abrasion under the applied transient loads. This was observed as a stabilization effect of the geotextile inclusion. As a general conclusion, for low-volume roads with relatively thin pavement sections, properly selected geotextiles provide benefits for separating the subgrade and base course (minimizing pumping), filtering infiltrated or ground water, and stabilizing the road profile. These benefits become more apparent when the thickness of the base course is less than 8 in.

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Performance of Geotextile-Reinforced Bases for Paved Roads

Cited by 24 publications

References 14 publications

Evaluating the Performance of Wicking Geotextile in Providing Drainage for Flexible Pavements Built over Expansive Soils

Evaluating the Performance of Wicking Geotextile in Providing Drainage for Flexible Pavements Built over Expansive Soils

Full-Scale Field Investigation of Asphalt Pavements Reinforced with Geocells

Evaluation of the Long-Term Performance of Woven Geotextile Used between Base Course and Subgrade of a Paved Road

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