Behaviour of asphalt concrete mixtures under tri-axial compression

Wang, Jingang; Molenaar, A A A; Ven, M.F.C. Van de; Wu, Shaopeng

doi:10.1016/j.conbuildmat.2015.12.036

Cited by 24 publications

(10 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is clear that the failure strength of asphalt mixtures is highly dependent on the confining pressure and temperature. Moreover, this power functional Mohr-Coulomb failure envelope under the loading speed of 1 mm/min can be validated by the nonlinear failure envelope in the I 1 − √ J 2 space proposed by Wang et al [15] (where I 1 represents the first invariant of stress tensor, J 2 denotes the second invariant of stress deviator). It is also reasonable to predict the failure envelope of asphalt mixtures in σ − τ space considering the influence of temperature and confining pressure as following:…”

Section: Nonlinear Mohr-coulomb Failure Criterionsupporting

confidence: 53%

“…In order to ensure the asphalt surfaces have adequate shear strength, the Specifications for Design of Highway Asphalt Pavement (JTG D50-2017) in China inspects the integrated penetration strength of the whole asphalt concrete surface layers; the essence is to control the shear strength from the view of asphalt mixtures. Although the uniaxial penetration test was proposed in the specification to simulate the complex stress states of asphalt materials in the pavement structure [14][15][16], it is unreasonable to solve the friction angle and cohesion strength by linear Mohr-Coulomb theory according to the combined tests of uniaxial penetration and unconfined compression, the reason being that the nonlinear shear properties of asphalt mixture were not taken into account [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Shear Properties of Asphalt Mixtures under Triaxial Compression

Huang

Liu

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

In order to study the influences of confining pressure and temperature on the shear properties of asphalt mixtures, triaxial tests were conducted at 40 °C, 50 °C, and 60 °C, with the confining pressure ranges from 0 to 1 MPa for the widely used continuous-graded AC (Asphalt Concrete)-13, open-graded OGFC (Open-Graded Friction Course)-13, and gap-graded SMA (Stone Mastic Asphalt)-13 asphalt mixtures in China. A nonlinear regression/prediction model of triaxial strength for asphalt mixtures was proposed. The results show that confining pressure and temperature had a significant effect on the shear resistance of asphalt mixtures. With increasing temperature, the shear strength of the asphalt mixture gradually decreased due to the decreasing of cohesion strength; the shear strength of the asphalt mixture increased with the increase of confining pressure. Meanwhile, the cohesion strength increased and the friction angle decreased gradually with the increase of confining pressure. When the confining pressure was close to 0.6 MPa, the Mohr–Coulomb failure envelope bended down, so the linear Mohr–Coulomb criterion is not suitable to describe the failure behavior of asphalt mixtures. Therefore, a power function failure envelope was put forward to characterize the nonlinear shear properties of asphalt mixtures. The nonlinear evolutional laws of shear parameters, which includes cohesion strength and friction angle, were also proposed for asphalt pavement material and structure design. Among these asphalt mixtures, the gap-graded SMA-13 asphalt mixture exhibited better performance on the resistance to shear failure, and it was recommended as the upper layer material to improve the shear performance of asphalt pavement.

show abstract

Section: Nonlinear Mohr-coulomb Failure Criterionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Shear Properties of Asphalt Mixtures under Triaxial Compression

Huang

Liu

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Cement and emulsified asphalt mortar (CA mortar) is an inorganic-organic composite material, which mainly consists of cement, emulsified asphalt, sand, and admixtures and is considered as a key material used in the construction of high-speed railway and road pavement [1][2][3][4][5][6]. In China, CA mortar is employed as the cushion layer and casted between the ballastless track slab and the concrete bed plate for providing leveling, load bearing and transmitting, vibration absorption, segregation and geometrical adjustment in CRTS (China Railway Track System) type I and II track structure [7,8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Stochastic Mechanical Behavior of Cement Emulsified Asphalt Mortar under Monotonic Compression

Xiao

Liu

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

Experimental investigation on cement emulsified asphalt mortar (CA mortar) under uniaxial monotonic compression by taking into account the stochastic properties were investigated. An analytical constitutive model based on the statistic damage approach capable of mimicking the stochastic mechanical responses of CA mortar under uniaxial compression was proposed. The comparison between the experimental results and the predictions demonstrated that the proposed model was able to characterize the salient features for CA mortar under uniaxial monotonic compression. Furthermore, the compressive stochastic evolution (SE) of CA mortar tested in this work and comparative analyses among typical China Railway Track System-I (CRTS-I) type CA mortar and concrete in several aspects were examined and performed; it was revealed that the Lognormal distribution density function can well represent the damage probability density for CA mortar, and its stochastic constitutive relationship can be reflected by a media process of transition from microscale to macroscale.

show abstract

“…In a PA mix, it is known that an interconnected coarse aggregates network (called as a stone-on-stone skeleton) is formed among a large volume fraction of coarse aggregates (Alvarez et al 2010, Wang et al 2016, Chen and Wong 2017, Alvarez et al 2018, Li et al 2019. Due to the formation of the stoneon-stone skeleton, the performance of PA mixes, such as the ravelling resistance, the permanent deformation resistance, etc., significantly depends on its material properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of stone-on-stone contact on porous asphalt mixes: micromechanical analysis

Zhang

Anupam

Scarpas

et al. 2019

International Journal of Pavement Engineering

View full text Add to dashboard Cite

Within the pavement engineering community, porous asphalt (PA) mixes are regarded as mixes capable of reducing noise and improving wet skid resistance. However, these mixes are likely to have the distress of ravelling. In order to analyse the propensity of a given PA mix for ravelling, the homogenisation technique can be considered as an attractive method. Along the line of the homogenisation technique, micromechanical models have been used to predict the stiffness of asphalt mixes. However, it was found that the predicted results were not in good agreement with the experimental values due to the fact that the stiffness of interacted aggregates was not accurately accounted in the models. To deal with this issue, it is important for researchers to study the stiffness of the interacted aggregates network and its role in the behaviour of a given mix. Based on this realisation, this paper provided a methodology to estimate the stiffness of the stone-on-stone skeleton and its role in the overall response of PA mixes. The results showed that the predicted stiffness of the stone-on-stone skeleton is dependent on the loading frequency/temperature and the compaction effort. The frequency response of the stone-on-stone skeleton is similar to that of the mix.

show abstract

Behaviour of asphalt concrete mixtures under tri-axial compression

Cited by 24 publications

References 2 publications

Shear Properties of Asphalt Mixtures under Triaxial Compression

Shear Properties of Asphalt Mixtures under Triaxial Compression

Experimental Investigation of Stochastic Mechanical Behavior of Cement Emulsified Asphalt Mortar under Monotonic Compression

Effect of stone-on-stone contact on porous asphalt mixes: micromechanical analysis

Contact Info

Product

Resources

About