Cyclic Plate Load Testing of Geosynthetic-Reinforced Unbound Aggregate Roads

Tingle, Jeb S.; Jersey, Sarah R

doi:10.3141/1936-08

Cited by 24 publications

(19 citation statements)

References 5 publications

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“…Similar test box has been used by other researchers to evaluate the performance of various types geotextiles and geogrids in the pavement layers (Abu-Farsakh et al, 2016;Perkins, 1999;Tingle & Jersey, 2005 Transformer (LVDT) sensors to allow for the measurement of the deformation of the subgrade soil due to the applied load. For the instrumentation of LVDTs, five steel pipes were used to hold the round aluminum caps with flat bottoms (Figure 4.3a).…”

Section: Test Boxmentioning

confidence: 99%

Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs

Behnood¹,

Olek²

2020

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The loss of functionality and the development of distress in concrete pavements is often attributable to the poor subbase and subgrade conditions and/or loss of support due to the development of the voids underneath the slab. Subgrade soil stabilization can be used as an effective approach to restore the functionality of the subgrades in patching projects. This research had two main objectives: (1) identifying the best practices for soil stabilization of the existing subgrade during pavement patching operations and (2) identifying and developing new, modified grouting materials for slab stabilization and undersealing. Various stabilization scenarios were tested and showed improved performance of the subgrade layer. The use of geotextile along with aggregate course was found to significantly reduce the settlement. Non-removable flowable fill was also found to significantly reduce the subgrade settlement. Cement-treated aggregate and lean concrete provided the best performance, as they prevented formation of any noticeable settlement in the underlying subgrade.

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Section: Test Boxmentioning

confidence: 99%

Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs

Behnood¹,

Olek²

2020

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“…It has been suggested that an aspect ratio of sample to particle size of ten is appropriate as a minimum (Lekarp et al 2000). A very large rigid mould was used by Tingle and Jersey (2005) to evaluate cyclic plate load testing of unbound aggregate roads.…”

Section: Laboratory Assessment Techniquesmentioning

confidence: 99%

The assessment of coarse granular materials for performance based pavement foundation design

Lambert

Fleming

Frost

2008

International Journal of Pavement Engineering

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The need to use more recycled and marginal materials in pavement foundations is encouraging moves towards performance based specifications. Such an approach needs data on the fundamental material parameters of stiffness and resistance to permanent deformation (strength) to allow analytical design and achieve comparable compliance testing on site. Whilst a number of laboratory and field tests to measure such performance exist, all have limitations relative to either the particle size of materials that can be tested and/or correlation between the laboratory and field derived data. This paper presents the development of a large scale resiliently lined steel laboratory material box tests proposed for routine material assessment. The test utilises a Lightweight Deflectometer, similar to that proposed for field compliance testing to provide performance data from compacted large particle size granular materials. The system developed utilises a "soft" base condition to replicate typical subgrade stiffness and allows wetting and drying of materials to assess their environmental stability. The results show that such a test can simply provide suitable data for performance based design, but consideration needs to be given to the water content of materials, the time of testing after compaction, and the use of appropriate boundary conditions. These findings have both implications not only for the developed tests but for field compliance testing of pavement foundations.

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“…Analysis of Falling Weight Deflectometer (FWD) data indicated that the control section had the greatest rutting, followed by the geogrid stabilized section, while the geotextile stabilized section had the least amount of rutting. A laboratory research program was performed in a large steel box by Tingle and Jersey (2005) [4]. The results indicated that the use of a geotextile only provided the lowest permanent deformation, followed by sections including both the geotextile and geogrid.…”

Section: Introductionmentioning

confidence: 99%

Improving Rutting Resistance of Flexible Pavement Using Geosynthetics

El-Maaty¹

2016

OALib

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Unbound base layers deform under load and contribute to the accumulation of ruts. Therefore, this study was concerned with studying the effect of reinforcement on the behavior of unbound granular material that used in flexible pavement layers as a base course. Two main geothynthetic types were used in this study. These types were woven geotextile and geogrid. Two geogrid opening sizes were used (GR105 and GR420). The experimental work was designed to evaluate plastic and elastic deformation and the modulus of elasticity of reinforced limestone base course. This experimental work carried out utilizing the static plate loading test in a test-model which simulated the subgrade and base course of the flexible pavement. The effect of base thickness, geogrid depth, modulus of elasticity of base course and geogrid edges fixation on the deformation characteristics were studied. Furthermore, the effect of loading time on the accumulated deformation was investigated. Moreover, the effect of reinforcement on base thickness saving (BCR) and deformation reduction ratio (DRR) was studied. A great influence for reinforcement especially with geogrid (GR420) was observed in improving the deformation characteristics of base course.

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Cyclic Plate Load Testing of Geosynthetic-Reinforced Unbound Aggregate Roads

Cited by 24 publications

References 5 publications

Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs

Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs

The assessment of coarse granular materials for performance based pavement foundation design

Improving Rutting Resistance of Flexible Pavement Using Geosynthetics

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