Comprehensive Material Characterizations of Pavement Structure Installed with Wicking Fabrics

Lin, Chuang; Xiong, Zhengqin; Han, Jie

doi:10.1061/(asce)mt.1943-5533.0002587

Cited by 32 publications

(13 citation statements)

References 28 publications

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“…This means that if the 506 geotextile had either greater permittivity or the ability to wick water from the soil, the trends in the 507 results may have been different. Geotextiles with the ability to wick water from unsaturated soils have been widely evaluated in the literature (Stormont and Ramos 2004;Stormont et al 2010;Lin et al 2018) but have not been used in reinforcement applications.…”

Section: Discussionmentioning

confidence: 99%

“…If geotextiles are used as the 80 reinforcing geosynthetic in the MSE wall they may also act as lateral vapor drains, helping to expel 81 water from the backfill (Stewart et al 2014b). The ability of a geotextile to act as a vapor drain 82 will depend on the polymer as well as if the geotextile is woven or nonwoven (Stormont and Ramos 83 5 2004;Stormont et al 2010;Lin et al 2018). Despite the positive effects of heating, it is well known that heating of geosynthetics in unconfined conditions (Zornberg et al 2004;Bueno et al 2005) or confined conditions (Karademir 2011) may lead to accelerated creep deformations.…”

Section: Introductionmentioning

confidence: 99%

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Impact of temperature on the pullout of reinforcing geotextiles from unsaturated silt

Ambriz¹,

Mun²,

McCartney

2020

Geosynthetics International

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This study investigates the thermal soil-geosynthetic interaction mechanisms of reinforcing geotextiles confined in compacted silt that may be encountered when using mechanically-stabilized earth (MSE) walls as geothermal heat sinks. A thermo-mechanical geosynthetic pullout device was used that incorporates standard components for geosynthetic pullout or creep testing but also heating elements at the top and bottom of the soil box to apply boundary temperatures and dielectric sensors embedded in the soil layer to monitor distributions 20 in temperature and volumetric water content. Two test series were performed: the first involves 21 monotonic pullout of woven polypropylene geotextiles after reaching steady-state conditions under different boundary temperatures without a seating load, and the second involves monotonic pullout of woven polyethylene-terephthalate geotextiles after reaching steady-state conditions under different boundary temperatures with a seating pullout load. The results indicate that the pullout resistance of both geotextiles decreased with increasing temperature. Although heating led to drying of the unsaturated silt layers as expected, measurements from the second test series indicate accumulation of water at the silt-geotextile interface. An effective stress analysis considering thermal softening of soils indicates that the increase in effective saturation at the siltgeotextile interface was the cause of the decrease in pullout resistance with heating.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of temperature on the pullout of reinforcing geotextiles from unsaturated silt

Ambriz¹,

Mun²,

McCartney

2020

Geosynthetics International

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“…Therefore, an improvement factor considering the increase in subgrade stiffness with the utilization of a wicking geotextile was used for design purposes. An improvement factor of 2.2 was adopted from the guidelines provided by Lin et al ( 36 ). The modulus and Poisson’s ratio of the asphalt and RAP aggregates considered in this study were obtained from Khan et al ( 12 ).…”

Section: Field Studymentioning

confidence: 99%

“…A laboratory soil-column test indicated the superiority of these fabrics over conventional geotextiles in their lateral drainage ability ( 35 ). Recently, numerical studies were also performed to understand the functional range and wicking ability of this geotextile in a soil-geotextile system ( 36, 37 ). Furthermore, Zhang et al performed a field study using this wicking geotextile in Alaska to mitigate the freeze-thaw problems associated with the unpaved roads ( 38 ).…”

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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

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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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“…When the intelligent geotextiles are applied to the reinforcement of the geotechnical structure, it can also carry out the health monitoring of the geotechnical structure, so as to ensure that the geotechnical structure and its locations with high failure and damage risk can be found in the early stage, which is conducive to prevention and maintenance in advance [13,14]. With the progress of fiber materials, a number of new high-performance geotextiles have emerged, including wicking geotextiles [15,16] and basalt fiber needling geotextiles [17].…”

Section: Introductionmentioning

confidence: 99%

Review of Application and Innovation of Geotextiles in Geotechnical Engineering

Yao

et al. 2020

Materials

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Most geotextiles consist of polymers of polyolefin, polyester or polyamide family, which involve environmental problems related to soil pollution. Geotextiles can be used for at least one of the following functions: Separation, reinforcement, filtration, drainage, stabilization, barrier, and erosion protection. Due to the characteristics of high strength, low cost, and easy to use, geotextiles are widely used in geotechnical engineering such as soft foundation reinforcement, slope protection, and drainage system. This paper reviews composition and function of geotextiles in geotechnical engineering. In addition, based on literatures including the most recent data, the discussion turns to recent development of geotextiles, with emphasis on green geotextiles, intelligent geotextiles, and high-performance geotextiles. The present situation of these new geotextiles and their application in geotechnical engineering are reviewed.

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Comprehensive Material Characterizations of Pavement Structure Installed with Wicking Fabrics

Cited by 32 publications

References 28 publications

Impact of temperature on the pullout of reinforcing geotextiles from unsaturated silt

Impact of temperature on the pullout of reinforcing geotextiles from unsaturated silt

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

Review of Application and Innovation of Geotextiles in Geotechnical Engineering

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