Packing theory-based framework to evaluate permanent deformation of unbound granular materials

Yideti, Tatek Fekadu; Birgisson, Björn; Jelagin, Denis; Guarin, Alvaro

doi:10.1080/10298436.2012.736620

Cited by 48 publications

(26 citation statements)

References 2 publications

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“…Parameter a as a function of moisture content for the different materials. Rahman and S. Erlingsson Birgisson, & Jelagin, 2013;Yideti, Birgisson, Jelagin, & Guarin, 2012). This needs further investigation.…”

Section: Influence Of Grain Size Distributionmentioning

confidence: 89%

A model for predicting permanent deformation of unbound granular materials

Rahman

Erlingsson

2015

Road Materials and Pavement Design

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A simple model has been proposed to characterise the accumulation of permanent deformation (PD) in unbound granular materials (UGMs) under cyclic loading of variable magnitudes. The model was developed based on multi-stage (MS) repeated-load triaxial (RLT) tests. The material parameters of this model can be evaluated using an MS RLT test. The model was validated by calibrating it for a few UGMs with a range of grain size distributions, moisture contents and degrees of compaction. The calibrated model was further validated by predicting the PD behaviour of some of these UGMs for different stress conditions. Generally, quite satisfactory predictions were obtained with this model with the advantage of reduced effort required for its calibration compared to some existing models. Additionally, the sensitivity of the parameters of this model to moisture, degree of compaction and grain size distribution was investigated with the aim of incorporating them into the model in future.

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Section: Influence Of Grain Size Distributionmentioning

confidence: 89%

A model for predicting permanent deformation of unbound granular materials

Rahman

Erlingsson

2015

Road Materials and Pavement Design

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“…For gravel UGM, an optimum fines content of 9% showed better resistance to permanent deformation than 4% and 14.5% fines contents. The permanent deformation behavior will be evaluated at a later stage of this research according to the packing theory based framework developed by Yideti et al (2013).…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, a newly constructed granular base layer is not stress-free (Uzan, 1985). Yideti et al (2013) presented a framework based on packing theory to evaluate the permanent deformation behavior of UGM. The framework introduced the disruption potential (DP), which is defined as the ratio of the volume of potentially disruptive fine material over the volume of voids within the coarse aggregate forming load-carrying skeleton.…”

Section: Introductionmentioning

confidence: 99%

Permanent deformation behavior of unbound granular base materials with varying moisture and fines content

Soliman

Shalaby

2015

Transportation Geotechnics

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“…The load-carrying structure in an asphalt mixture is determined using the framework presented by Lira et al (2013) for asphalt mixtures and Yideti et al (2012) for unbound materials. The framework identifies two different structures within the aggregates: primary structure (PS) and secondary structure (SS).…”

Section: Packing-based Bitumen Distribution Modelmentioning

confidence: 99%

Binder distribution model for asphalt mixtures based on packing of the primary structure

Lira¹,

Jelagin²,

Birgisson³

2014

International Journal of Pavement Engineering

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Film thickness describes the coating around aggregate particles on asphalt mixtures. The standard method of calculating film thickness has proven to present several limitations, such as assuming an average thickness independent of particle size, being completely independent to the porosity of the mixture and considering only one mineral type. In this paper, a binder distribution model is developed for aggregates according to size and role in the structure. The aggregates are separated into two different structures: primary structure, the load bearing one, and secondary structure, smaller material that provides stability to the skeleton. A coating thickness for these two structures is calculated from a geometrical consideration that includes the packing arrangement of particles and the effect of overlapping as the film grows. The results were compared with known rutting performance of field mixtures and moisture conditioned laboratory mixtures, showing a good correlation between film thickness and resistance to failure.

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Packing theory-based framework to evaluate permanent deformation of unbound granular materials

Cited by 48 publications

References 2 publications

A model for predicting permanent deformation of unbound granular materials

A model for predicting permanent deformation of unbound granular materials

Permanent deformation behavior of unbound granular base materials with varying moisture and fines content

Binder distribution model for asphalt mixtures based on packing of the primary structure

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