Monitoring Performance of Geosynthetic-Reinforced and Lime-Treated Low-Volume Roads under Traffic Loading and Environmental Conditions

Zornberg, Jorge G.; Roodi, Gholam H.; Ferreira, Julio Antonio Zambrano; Gupta, Ranjiv

doi:10.1061/9780784412121.135

Cited by 10 publications

(6 citation statements)

References 6 publications

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“…The fact that in both drying and wetting period the reinforced test section experienced less differential deformation in comparison to unreinforced section appears to support the findings of field studies conducted by Zornberg et al (2012) and Dessouky et al (2015) where reinforced pavement sections presented lesser defects in comparison to unreinforced sections after a monitoring period of up to 6 years.…”

Section: Figure 9 Swelling Deformation Of Test Sectionssupporting

confidence: 84%

“…However, the use of geogrids in design was proven to be effective Prozzi 2009, Zornberg andGupta, 2009). The performance of geogrid-reinforced low volume road sections in terms of mitigating longitudinal cracking was found to be promising but the mechanism governing their performance has not been clearly understood (Zornberg et al, 2012). The use of geogrids to mitigate defects developed on road pavements built over expansive soils has not been fully investigated.…”

Section: Figure 1 Typical Longitudinal Cracks Found On Road Pavements Built Over Expansive Soilsmentioning

confidence: 99%

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The Use of Geogrids in Mitigating Pavement Defects on Roads Built over Expansive Soils

Shumbusho¹,

Ghataora²,

Burrow³

et al. 2021

RJESTE

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This study was conducted to investigate the potential benefits of using geogrids in mitigating pavement defects notably roughness and longitudinal cracking on pavements built over expansive soils. The seasonal changes of expansive soils (periodic wetting and drying) cause detrimental effects on the overlying road pavements. Such detrimental behavior of expansive soils was simulated in a controlled laboratory environment through allowing cyclic wetting and drying of an expansive soil underlying a pavement section. The shrink/swell effects of the expansive soil subgrade were examined through monitoring its change in moisture, and measuring deformation of overlying pavement section. The experimental study suggested that a geogrid layer in a reinforced pavement section can reduce surface differential shrinking and swelling deformation resulting from underlying expansive soils by a factor of 2 and 3 respectively in comparison to unreinforced section. Given that an oedometer test which is typically used to predict swelling potential of expansive soils is known to overpredict in-situ soil swell, experimental program also investigated quantitatively the extent to which the oedometer can overestimate swelling behaviour of the real-field scenarios. It was found that oedometer percent swell can overpredict in-situ swelling behaviour of the expansive soil by a factor ranging between 2 and 10 depending upon the period over which the in-situ expansive soil has been in contact with water.

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Section: Figure 9 Swelling Deformation Of Test Sectionssupporting

confidence: 84%

Section: Figure 1 Typical Longitudinal Cracks Found On Road Pavements Built Over Expansive Soilsmentioning

confidence: 99%

The Use of Geogrids in Mitigating Pavement Defects on Roads Built over Expansive Soils

Shumbusho¹,

Ghataora²,

Burrow³

et al. 2021

RJESTE

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“…Further enhancing the potential of geosynthetics in soil stabilization, Stienberg highlighted the utility of geomembranes in controlling soil swelling [33]. Other researchers like Vessely and Wu have demonstrated the effectiveness of geotextiles in stabilizing problematic soils [34], and Zornberg et al have further corroborated this by showing that geotextiles could mitigate swelling-induced cracks in pavements constructed over expansive soils [35].…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Hybrid Geosynthetic Systems in Controlling Differential Heave in Flexible Pavements over Expansive Soils

Tamim,

Mishra,

Chittoori

2023

Geotechnics

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The challenge of maintaining ride quality and serviceability in flexible pavements built over expansive soil deposits remains a critical concern for transportation agencies. These expansive subgrades exhibit swell-shrink behavior in response to moisture fluctuations, leading to differential heaving and subsequent costly maintenance. This paper explores the effectiveness of a Hybrid Geosynthetic Reinforcement System (HGRS)—a composite of geocell and geogrid—as a targeted mitigation strategy for differential heaving induced by expansive soils. A large-scale box test was designed to simulate a flexible pavement section, consisting solely of a base course layer and the underlying expansive subgrade. Four test conditions were investigated: an unreinforced control, a geocell-reinforced section, a geogrid-reinforced section, and an HGRS-reinforced section. Vertical displacements on the surface of the base course layer were longitudinally monitored and compared against the control. The results reveal that the use of geosynthetic reinforcements, and HGRS in particular, significantly mitigates both maximum surficial heave and differential swelling. Among the systems tested, flexible pavements featuring HGRS demonstrated the most effective performance in alleviating the challenges posed by expansive soil deposits.

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“…The effect of geosynthetic reinforcement depends on numerous factors, such as the pavement structure, the characteristics of the geosynthetic materials used and the location of the geosynthetics inside the pavement layers. Several authors have demonstrated the mechanisms of geosynthetic reinforcement in pavements under different conditions [3], [4], [5]. The geosynthetics used in flexible pavement are essentially geogrids.…”

Section: Introductionmentioning

confidence: 99%

A FEM Simulation of the Mechanical Interaction between Asphalt Mixture and Geogrid at Micro-Scale

Suraci

Buonsanti

Leonardi

et al. 2018

KEM

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The purpose of this paper is to describe (at micro-scale) the geogrid-reinforced flexible pavement behaviour under a static loading. The finite element technique is used to analyse the mechanical interaction between granular particles, asphalt binder and geogrid. The geogrid is the most commonly used geosynthetic product for enhancing the stiffness and stability of traditional flexible pavement and it is beneficial for reducing the rutting damage in pavement. The geosynthetic performance is influenced by geometry, material and its placement inside the pavement layers. Whereas, the asphalt mixture performance is governed by properties of aggregate (shape, size distribution, etc.), properties of asphalt binder (grading, viscosity, asphalt modifiers, etc.) and asphalt-aggregate interactions (adhesion and absorption, etc.). Through FEM software (ABAQUS) the microstructure is modelled in 3D. This microstructure is made up of three different components: spherical particles (aggregates), asphalt binder and one strip of geogrid.

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Monitoring Performance of Geosynthetic-Reinforced and Lime-Treated Low-Volume Roads under Traffic Loading and Environmental Conditions

Cited by 10 publications

References 6 publications

The Use of Geogrids in Mitigating Pavement Defects on Roads Built over Expansive Soils

The Use of Geogrids in Mitigating Pavement Defects on Roads Built over Expansive Soils

Effectiveness of Hybrid Geosynthetic Systems in Controlling Differential Heave in Flexible Pavements over Expansive Soils

A FEM Simulation of the Mechanical Interaction between Asphalt Mixture and Geogrid at Micro-Scale

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