A review on mechanical behavior and design considerations for reinforced-rehabilitated bituminous pavements

Solatiyan, Ehsan; Bueche, Nicolas; Carter, Alan

doi:10.1016/j.conbuildmat.2020.119483

Cited by 22 publications

(3 citation statements)

References 97 publications

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“…Many scientific proofs encourage using geosynthetic materials as an interlayer between bituminous layers to restrict fatigue cracking and rutting and to delay the appearance of reflective cracking ( 10 ). This rehabilitation solution not only acts as a stress relief and reinforcement layer in the system ( 11 ) but, also compared to a thick overlay, it is much more cost-effective ( 12 ) and sustainable since it allows lower hot mix materials as an overlay, thus decreasing the level of emissions and dissipation of natural sources of materials ( 7 ).…”

Section: Research Backgroundmentioning

confidence: 99%

Evaluation of Crack Development Through a Bituminous Interface Reinforced With Geosynthetic Materials by Using a Novel Approach

Solatiyan

Bueche

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Using interlayers made of geosynthetic materials has proved its effectiveness with respect to postponing the appearance of reflective cracking on the surface. In this regard, in a reinforced bituminous interface, the crack first propagates from its origin upward until it reaches the interlayer. When the interlayer has higher stiffness than its surrounding bituminous material, the crack path diverts horizontally along the interlayer plane until the whole energy of the crack dissipates. Nevertheless, this mechanical improvement needs to be further studied to quantify the reinforcement effects of geosynthetic materials in mechanistic-based design of reinforced sections. This study aimed to develop a laboratory test method that not only is able to illuminate the crack resistance effect of geosynthetics but is also able to differentiate the load–displacement curves among different types of reinforced bituminous interfaces. The results led to the advent of a new test device called the crack widening device in which reproducibility and statistical variability of the outcomes were all within the acceptable range. On this ground, using paving fabric showed superior performance among others with respect to energy dissipation capability and retarding the loss in the stiffness modulus during the crack propagation stage compared with the corresponding unreinforced cases. On the other hand, using the reinforcement grids led to a higher initial stiffness of the reinforced structure, especially when embedded between coarse hot mixtures.

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Section: Research Backgroundmentioning

confidence: 99%

Evaluation of Crack Development Through a Bituminous Interface Reinforced With Geosynthetic Materials by Using a Novel Approach

Solatiyan

Bueche

et al. 2023

Transportation Research Record: Journal of the Transportation R

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“…Currently, asphalt pavements are subjected to high traffic volumes generating distresses such as rutting and cracking that need frequent and expensive maintenance [ 1 , 2 ]. In general, there are two fundamental approaches to soothe this issue: one is to frequently mill and apply a new asphalt overlay (mill and fill) at certain intervals of the pavement’s service life [ 3 , 4 , 5 ]. This approach is rather expensive due to a need for renewal over a short period of time, which in turn requires additional financial and material resources and does not correspond with the environmental concerns arising from releasing large amounts of emissions in the air along with high-energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Characterization of Geosynthetics-Reinforced Asphalt Mixture

2021

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In order to improve the mechanical properties of asphalt pavement, geosynthetics can be employed in asphalt mixture. This research designed 12 reinforced schemes based on the types of geosynthetics, bonding layers and reinforced position. For the relative tests carried out, reinforced specimens were prepared according to each individual scheme. Moreover, rutting tests, bending creep tests and split fatigue tests were carried out on reinforced specimens in the laboratory. The results obtained in this investigation showed that the dynamic stability, bending creep rate and fatigue life of geocell-reinforced specimens are better than those of geogrid-reinforced specimens. The bonding layer of Styrene-Butadiene-Styrene (SBS) modified asphalt is better than epoxy modified asphalt. The dynamic stability and fatigue life of middle reinforcement are better than those of the lower reinforcement, while the bending creep rate of the lower reinforcement is better than middle reinforcement. In addition, reinforced scheme (9) has the largest increase in dynamic stability and fatigue life by 103 and 137%, respectively, and reinforced scheme (12) has the largest reduction in bending creep rate by 46%. However, scheme (9) improved dynamic stability and fatigue life by 43 and 29% higher than scheme (12), while the reduction of flexural creep rate of scheme (12) is only 7% higher than that of scheme (9).

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“…The mechanical properties of asphalt mixture can be enhanced by the lateral confinement of the cells. However, little literature ( 26 , 27 ) has provided an insight into the meso-mechanical behavior of geocell-reinforced asphalt mixtures under uniaxial compression. In the first place, numerical simulations of the geocells are not so easy because of their complex 3D honeycomb structure.…”

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Uniaxial Compressive Process Simulation of Geocell-Reinforced Asphalt Mixture by Discrete Element

Xianrong,

Shangyu,

Yunsheng

2023

Transportation Research Record: Journal of the Transportation R

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Based on laboratory tests and the discrete element method (DEM), this study investigated the reinforcement by geocells on the compressive process of asphalt mixture. By considering the vital material features and mechanical properties of different ingredients (the three-dimensional irregular shapes and elastic properties of coarse aggregates and geocells, the viscoelastic properties of asphalt mastic, and the random distribution of air voids within asphalt mastic), micromechanical modeling of geocell-reinforced asphalt mixture and virtual uniaxial compression test was built by using PFC3D. The effects of geocell reinforcement on the compression process of the asphalt mixture were evaluated through the virtual compression test. The results show that the built DEM and virtual test can effectively predict the compression process of geocell-reinforced asphalt mixture. The geocell reinforcement positively affected the compression process of asphalt mixture by affecting the distribution of micromechanical forces and displacements in the asphalt mixture. Moreover, the geocell reinforcement was more significant on asphalt mastic. This indicates that the geocell significantly improves the compressive performance of asphalt mixture from the microscopic perspective.

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A review on mechanical behavior and design considerations for reinforced-rehabilitated bituminous pavements

Cited by 22 publications

References 97 publications

Evaluation of Crack Development Through a Bituminous Interface Reinforced With Geosynthetic Materials by Using a Novel Approach

Evaluation of Crack Development Through a Bituminous Interface Reinforced With Geosynthetic Materials by Using a Novel Approach

Laboratory Characterization of Geosynthetics-Reinforced Asphalt Mixture

Uniaxial Compressive Process Simulation of Geocell-Reinforced Asphalt Mixture by Discrete Element

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