Index and Performance Tests for Geocells in Different Applications

Cancelli, Alessandro; Rimoldi, P.; Montanelli, F

doi:10.1520/stp24313s

Cited by 14 publications

(5 citation statements)

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“…The length between the gauge length for all specimens was set to 7.87 in. (Cancelli et al 1993). The rate at which the samples were tested was based upon the ASTM D4595 (2017) and was set to 3kN/min (11.24lbf/sec).…”

Section: Mechanical Properties Testing Detailsmentioning

confidence: 99%

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Evaluation of airfield damage repair methods for extreme cold temperatures

Asenath‐Smith¹,

Melendy²,

Menke³

et al. 2019

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To address the need for expedient repair solutions for paved runways in cold environments, airfield damage repair Rapid Airfield Damage Recovery (RADR) materials were tested at temperatures down to-40 ºF. New materials and methods were developed to fill the identified performance gaps for conventional RADR materials. Simulated crater repairs were performed at-20 and-40 ºF. Folded fiber glass panels and hinges met the published tensile strength, but did not meet the required flexural strength. Fiberglass-reinforced polyester panels retained their 73 ºF tensile and flexural strengths down to-40 ºF. If required, foreign object debris covers can be used at temperatures below freezing, but further experimentation is needed to fully assess matting candidates at temperatures below 0 ºF. Geocell sidewalls and junctions showed an increased maximum force, with a tenfold decrease in the displacement before failure. Rapid setting flowable fill and polyurethane foam, prepared conventionally, were demonstrated as backfill materials at temperatures as low as 0 ºF. As a cap material, Rapid Set ® concrete can be placed using conventional techniques down to 17 ºF. Snow and ice materials were demonstrated as backfill materials below freezing and met the strength requirements for capping applications at temperatures down to-40 ºF. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents.

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Section: Mechanical Properties Testing Detailsmentioning

confidence: 99%

“…2 (Geosystems 2015). The honeycomb structure of the geocells imposes complex interconnections between cells and thus the performance of the geocell is a function of the different junctions and the wall properties ( Figure 4) (Cancelli et al 1993). (Cancelli et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of airfield damage repair methods for extreme cold temperatures

Asenath‐Smith¹,

Melendy²,

Menke³

et al. 2019

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“…Comprising a uniformly distributed array of apertures between longitudinal and transverse tension-bearing elements, geogrids reinforce soil through lateral frictional resistance, enhanced bearing capacity, and a membrane effect [13,14]. Their applications are broad and have proven successful in providing construction platforms over weak subgrades and reinforcing pavements [15][16][17][18][19][20]. However, the membrane effect often necessitates significant deformation [21].…”

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 all-round confinement effect of geocells combined with the efficient load transfer between interconnected cells make them structurally strong and their flexible wall structures allows them to conform to the complex geometries of various reinforced soil structures. The beneficial effects of geocells in various engineering applications were investigated by several earlier researchers [1][2][3][4][5][6][7][8][9][10][11]. Also geocells on wall face facilitate the growth of vegetation, offering additional advantage of bioreinforcement, making it an engineered green solution which is sustainable.…”

Section: Introductionmentioning

confidence: 99%

Seismic Response of Geocell Retaining Walls Through Shaking Table Tests

Latha

Manju

2016

Int. J. of Geosynth. and Ground Eng.

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Performance of geocell retaining walls under seismic shaking conditions is studied in this paper. Shaking table tests on geocell retaining walls subjected to ground shaking conditions of different accelerations and frequencies are discussed. Retaining wall models of 600 mm height were constructed using a sand backfill with layers of geocells stacked one above the other to form the facing. Geocells in these tests were constructed using planar geonets by stitching them into a honeycomb network. Material used for making geocells, number of geocells in each layer, slope of the facing and infill material of geocells were varied in different tests. These geocell retaining walls were subjected to 100 cycles of sinusoidal base shaking at accelerations ranging between 0.2 and 0.3 g and frequency range of 1-7 Hz. Response of retaining walls was monitored in terms of acceleration amplifications and wall deformations at different elevations. It was observed that all geocell retaining walls were extremely strong to seismic shaking. Acceleration amplifications and displacements increased with increase in base acceleration or shaking frequency. It was observed that the detrimental effect of increasing ground motion parameters on the wall response was more significant than the beneficial effect of improvement in geocell parameters.

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Index and Performance Tests for Geocells in Different Applications

Cited by 14 publications

References 0 publications

Evaluation of airfield damage repair methods for extreme cold temperatures

Evaluation of airfield damage repair methods for extreme cold temperatures

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

Seismic Response of Geocell Retaining Walls Through Shaking Table Tests

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