Effects of morphological characteristics of aggregate particles on the mechanical behavior of bituminous paving mixtures

Aragão, Francisco Thiago Sacramento; Pazos, Abraham Ricardo Guerrero; Motta, Laura Maria Goretti da; Kim, Yong-Rak; Nascimento, Luís Alberto Herrmann do

doi:10.1016/j.conbuildmat.2016.07.013

Cited by 65 publications

(12 citation statements)

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“…The permanent deformation showed a strong correlation with surface texture and angularity; the former has significant influences on the permanent deformation. Aragao et al [ 15 ] evaluated the influence of morphological properties of aggregates on the mechanical behavior of bituminous mixtures. The results indicated that the morphological characteristics of coarse aggregate are strongly correlated with the resistance to rutting of asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Aggregate Morphological Characteristics for Viscoelastic Properties of Asphalt Mixes Using Simplex Lattice Design

et al. 2018

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Morphological characteristics of aggregates have direct impacts on performances of asphalt mixes. This paper aims to investigate the effects of the morphological characteristics of fine and coarse aggregates on the high-temperature viscoelastic properties of asphalt mortars and mixtures. For this purpose, an experimental proportion scheme was designed for asphalt mixes prepared with three different types of aggregates (basalt, andesite and pebble/river sand) based on the simplex lattice design (SLD) method. Three morphological parameters were chosen to characterize shape, angularity and texture of aggregates. Afterwards, the uniaxial compression creep test was conducted for asphalt mixes and the high-temperature viscoelastic properties were obtained based on Burgers model. The effects of fine and coarse aggregates on the viscoelastic properties are analyzed through asphalt mortars and mixtures, respectively. The results showed that aggregate morphological characteristics correlate with the high-temperature viscoelastic properties of asphalt mixes, especially for fine aggregates. Aggregates with complex morphological characteristics are conducive to improving the deformation recovery and anti-deformation of asphalt mixes. Furthermore, coarse aggregates can enhance the anti-deformation of asphalt mixture effectively due to its skeleton effect.

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Section: Introductionmentioning

confidence: 99%

Analysis of Aggregate Morphological Characteristics for Viscoelastic Properties of Asphalt Mixes Using Simplex Lattice Design

et al. 2018

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“…In order to design civil engineering materials, such as asphalt, with optimised workability, durability and mechanical properties, it is of the foremost importance to understand how size distribution and shape of aggregates influence their porosity, stone interlock and amounts of asphalt binder or mortar required for an effective binding action [1,2].…”

Section: Introductionmentioning

confidence: 99%

The spherical primitive and perlin noise method to recreate realistic aggregate shapes

et al. 2021

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An algorithm to re-create virtual aggregates with realistic shapes is presented in this paper. The algorithm has been implemented in the Unity 3D platform. The idea is to re-create realistically the virtual coarse and crushed aggregates that are normally used as a material for the construction of roads. This method consists of two major procedures: (i) to combine a spherical density function with a noise matrix based on the Perlin noise to obtain shapes of appropriate angularity and, (ii) deform the shapes until their minor ferret, aspect ratio and, thickness are equivalent to those wanted. The efficiency of the algorithm has been tested by reproducing nine types of aggregates from different sources. The results obtained indicate that the method proposed can be used to realistically re-create in 3D coarse aggregates. Graphic abstract

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“…Inside the asphalt mixture, the interfacial bond strength between the aggregates and the asphalt is an important factor in the flexural cracking behavior of the asphalt mixture. Studies have shown that using angular aggregates with a rich surface texture and high roughness can enhance the interfacial bond strength between the aggregate and the asphalt, which in turn significantly improves the fatigue cracking resistance of the asphalt mixture [8][9][10]. Haskett et al [11] analyzed the shear friction and interlocking behavior of aggregates.…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of the Influence of Aggregate Strength on the Flexural Cracking Behavior of Epoxy Asphalt Mixtures

Wei

et al. 2020

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The flexural cracking resistance of an asphalt concrete mixture used in a steel bridge deck pavement needs to be higher than that of one used in ordinary pavement. In this study, mechanical experimental tests were used to evaluate the influence of the aggregate strength on the flexural cracking behavior of epoxy asphalt concrete (EAC). The aggregate fracture area of beam cross sections was quantitatively analyzed by digital image processing, and crack propagation in the mixture was analyzed using fracture mechanics theory. The bending test results showed that the EAC containing high-strength aggregates exhibited the highest flexural cracking resistance among all of the aggregate mixtures under the same conditions. The use of high-strength aggregates led to a reduction in the aggregate fracture area, thereby improving the flexural cracking resistance of the mixture. The aggregate strength had a significant influence on the flexural cracking propagation behavior of the mixture. Fatigue test results at strain-controlled levels of 600–1200 με and 15 °C showed that the aggregate strength had no evident influence on the fatigue properties of the EAC. It is recommended that high-strength aggregates are used to increase the fracture resistance of aggregates and the flexural crack resistance of EACs.

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Effects of morphological characteristics of aggregate particles on the mechanical behavior of bituminous paving mixtures

Cited by 65 publications

References 3 publications

Analysis of Aggregate Morphological Characteristics for Viscoelastic Properties of Asphalt Mixes Using Simplex Lattice Design

Analysis of Aggregate Morphological Characteristics for Viscoelastic Properties of Asphalt Mixes Using Simplex Lattice Design

The spherical primitive and perlin noise method to recreate realistic aggregate shapes

Experimental Evaluation of the Influence of Aggregate Strength on the Flexural Cracking Behavior of Epoxy Asphalt Mixtures

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