A New Viscoelastic Mechanics Model for the Creep Behaviour of Fibre Reinforced Asphalt Concrete

Huang, Chunshui; Wang, Fangtao; Gao, Tao

doi:10.3221/igf-esis.45.09

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…The improvement of constitutive models is gaining increasing interest in the field of rheology in order to better describe the mechanical behaviors of complex rheological materials. Furthermore, several rheological models of asphalt mixtures were proposed in the past [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ]. These models can be divided into integral constitutive and differential constitutive models [ 15 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Viscoelastic Damage Characteristics of Asphalt Mixtures Using Fractional Rheology

Zhang

et al. 2021

Materials

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The mechanical behavior of asphalt mixtures at high stress levels are characterized by non-linear viscoelasticity and damage evolution. A nonlinear damage constitutive model considering the existence of creep hardening and creep damage mechanisms in the entire creep process is proposed in this study by adopting the fractional rheology theory to characterize the three-stage creep process of mixtures. A series of uniaxial compressive creep tests under various stresses were conducted at different temperatures to verify the model. The results indicated that the model predictions were in good agreement with the creep tests. The relationship between the model parameters and applied stresses was established, and the stress range in which the mixture exhibited only creep consolidation was obtained. The damage to the asphalt mixture was initiated in the steady stage; however, it developed in the tertiary stage. A two-parameter Weibull distribution function was used to describe the evolution between the damage values and damage strains at different stress levels and temperatures. The correlation coefficients were greater than 0.99 at different temperatures, indicating that a unified damage evolution model could be established. Thus, the parameters of the unified model were related to material properties and temperature, independent of the stress levels applied to the mixtures.

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Section: Introductionmentioning

confidence: 99%

Viscoelastic Damage Characteristics of Asphalt Mixtures Using Fractional Rheology

Zhang

et al. 2021

Materials

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“…For example, Ren et al 2 used the improved Burgers model to explore the vibration characteristics of viscoelastic composite structures. Huang et al 3 also used the modified Burgers model to describe the viscoelastic constitutive behavior of asphalt concrete. Xu et al 4 modeled the viscoelastic behaviors of asphalt binders and asphalt mastics using the FDM-4 model, which was composed of a Maxwell element in series with two Abel dashpots.…”

Section: Introductionmentioning

confidence: 99%

A method for calculating differential constitutive equation of linear viscoelastic composite model

Peng

2021

Science Progress

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The stress–strain behaviors of viscoelastic materials are often simulated using a model composed of various combinations of springs and dampers. With the increase in the number of springs and dampers, the viscoelastic characteristics of the model will approach those of the actual material. This study discusses how to obtain the differential constitutive equation of a viscoelastic model composed of any number of springs and dampers. First, the general viscoelastic model is regarded as the combination of various Kelvin units. The viscoelastic model is then transformed into a digraph. Based on the relationships between the independent path of the digraph and the strain equation of the viscoelastic model and between the closed enclosure and the stress equation, the derivation of the constitutive equation is transformed into operations involving the incidence matrix of the digraph. Finally, the coefficients of the linear differential operator of the constitutive equation of the viscoelastic model can be obtained by block matrix operations. This method is suitable for computer programming and has a certain significance for accurately constructing viscoelastic models of engineering materials.

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Effect of interfacial transition zone on creep behavior of steel fiber-reinforced concrete

Zhao²,

Guo³

et al. 2022

Construction and Building Materials

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A New Viscoelastic Mechanics Model for the Creep Behaviour of Fibre Reinforced Asphalt Concrete

Cited by 4 publications

References 7 publications

Viscoelastic Damage Characteristics of Asphalt Mixtures Using Fractional Rheology

Viscoelastic Damage Characteristics of Asphalt Mixtures Using Fractional Rheology

A method for calculating differential constitutive equation of linear viscoelastic composite model

Effect of interfacial transition zone on creep behavior of steel fiber-reinforced concrete

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