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asphalt mixture viscoelastic

A viscoelastic damage constitutive model for asphalt ...

Dec 10, 2019· 1. Introduction. Fatigue cracking is a major form of asphalt pavement distress due to the repeated traffic load, and attempting to investigate an appropriate test or analysis protocol to describe and model the essence of the fatigue phenomenon of asphalt mixture has always been a hot point for pavement researchers,, .. Currently, there are two major theories used to characterize mixture's ...

Viscoelastic Model for Discrete Element Simulation of ...

Viscoelastic Model for Discrete Element Simulation of Asphalt Mixtures. This paper presents a viscoelastic model of asphalt mixtures with the discrete element method, where the viscoelastic behaviors of asphalt mastics (fine aggregates, fines, and asphalt binder) are represented by a …

Approach for Quantifying the Effect of Binder Oxidative ...

Jan 01, 2013· Because of the noted influence of oxidative aging on mixture properties and pavement performance, it is becoming imperative to have a more complete understanding of the influence of asphalt binder aging on the viscoelastic behavior of asphalt mixtures.

Research on Fractional Derivative Viscoelastic ...

So the fractional derivative viscoelastic model with three elements can accurately describe the dynamic mechanical properties of asphalt mixture. Discover the world's research 20+ million members

Viscoelastic Damage Characteristics of Asphalt Mixtures ...

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 ...

Anisotropic Viscoelastic Properties of Undamaged Asphalt ...

Jan 01, 2012· A test protocol and a data analysis method are developed in this paper on the basis of linear viscoelastic theory to characterize the anisotropic viscoelastic properties of undamaged asphalt mixtures.

IRRECOVERABLE AND RECOVERABLE NONLINEAR …

terization of asphalt mixtures have been obtained from the constant stress creep tests, or constant strain relaxation tests (1-4), and the sinusoidal loading tests (5-8). In most cases, the linear viscoelastic behavior of the asphalt concrete was assumed,-and, henceforth, the linear viscoelastic material properties in terms of creep compliance,

Viscoelastic Equivalent Creep Behavior and Its Influencing ...

Feb 17, 2021· The aim of this study is to further investigate the effect of different basalt fiber (BF) factors on the viscoelastic equivalent creep behavior of fiber-reinforced asphalt mixture (FRAM) under indirect tensile (IDT) condition. A two-dimension mesostructural model composed of different components including fiber mortar polymer and coarse particle aggregate is constructed via the section image ...

Viscoelastic Model for Discrete Element Simulation of ...

Apr 04, 2009· This paper presents a viscoelastic model of asphalt mixtures with the discrete element method, where the viscoelastic behaviors of asphalt mastics (fine aggregates, fines, and asphalt binder) are represented by a Burger's model. Aggregates are simulated with irregular shape particles consisting of balls bonded together by elastic contact ...

Viscoelastic Properties of Asphalt Mixtures with Different ...

Abstract. Read online. To obtain the viscoelastic parameters of asphalt mixtures and analyze the effect of temperatures and modifiers on viscoelastic properties of asphalt mixtures, the creep compliances of the neat asphalt mixture (AM), compound diatomite and basalt fibers reinforced asphalt mixture (DBFAM), and styrene-butadiene-styrene modified asphalt mixture (SBSAM) were tested and ...

Comparative Study of Different Form of Asphalt Mixture ...

Comparative Study of Different Form of Asphalt Mixture Viscoelastic Rheological Model. Article Preview. Abstract: In this paper, based on the essential attribute of the asphalt mixture, the characteristics of the asphalt mixture creep deformation were analyzed. With the comparison of the theoretical and experimental results, the advantages and ...

Asphalt Binder Parameters and their Relationship to the ...

Asphalt concrete is a non-homogenous viscoelastic material; its behavior depends on the properties of the asphalt binder and the aggregate skeleton. The two major distresses in flexible pavements, fatigue cracking and rutting, have different mechanisms in that the …

Viscoelastic-Plastic-Fracture Modeling of Asphalt Mixtures ...

CONSTITUTIVE MODELS FOR ASPHALT MIXTURES With small deformation and no cracking damage as sumed, the total strain of an asphalt mixture subjected to an external load is decomposed into viscoelastic and viscoplastic strains. ve vp ij ij ij (1) where ij = total strain tensor, ve ij = viscoelastic strain tensor, and vp

Identification of the viscoelastic properties of an ...

Oct 16, 2020· In these studies, the master curves of asphalt mixtures are modeled using different functions: Sigmoidal function, 2S2P1D model [34, 35], and Havriliak-Negami (HN) model . A comparison between the 2S2P1D and HN models is available in . In this research, the HN model is used to simulate the viscoelastic properties of asphalt mixtures.

Viscoelastic Parameters of Asphalt Mixtures Identified in ...

We present two methods used in the identification of viscoelastic parameters of asphalt mixtures used in pavements. The static creep test and the dynamic test, with a frequency of 10 Hz, were carried out based on the four-point bending beam (4BP). In the method identifying viscoelastic parameters fo …

Effects of Aging on Viscoelastic Properties of Asphalt ...

Jan 01, 1998· The effects of aging on asphalt-aggregate mixtures is a topic that has been gaining attention in recent years. Of special interest is how the fatigue performance of asphalt concrete mixtures changes with time because of changing material properties. The fatigue performance of a mixture is related to its viscoelastic material properties.

Characterization of viscoelastic properties of asphalt ...

Sep 06, 2021· The viscoelastic properties of the asphalt mixture are calculated using the deflection measured in time. Zofka et al. [14] tested 20 different mixture types consisting of 10 binder types and 2 aggregate sources.

Investigation on strength characteristics of bio-asphalt ...

Accurately speaking, the asphalt mixture is a viscoelastic material, its mechanical properties have a time effect, and strength solution is a dynamic process . When the action time of the force is short, and the loading rate is large, the momentum of the asphalt mixture is large . According to the law of conservation of momentum, if the impulse ...

PAVEMENT TECHNOLOGY ADVISORY - POLYMER-MODIFIED …

MIX ASPHALT? natural viscoelastic behavior of the Asphalt cement is the "glue" that holds a hot mix asphalt (HMA) pavement together. It is a viscoelastic material, meaning that it displays both viscous (fluid-like) and elastic (solid-like) charac-teristics. These characteristics are largely temperature dependent, as asphalt

Viscoelastic Analysis and Fatigue Characterization of ...

is more likely to exist in AC by incorporating sand asphalt mixtures. First, the linear viscoelastic properties of binder and sand asphalt mixture samples were evaluated to obtain the material properties under the influence of aging. Later, the fatigue tests on the sand asphalt mixture were investigated to understand the influence of a thin film

Asphalt – Pavement Interactive

In HMA, asphalt functions as a waterproof, thermoplastic, viscoelastic adhesive. By weight, asphalt generally accounts for between 4 and 8 percent of HMA and makes up about 25 – 30 percent of the cost of an HMA pavement structure depending upon the type and quantity. The paving industry also uses asphalt emulsions, asphalt cutbacks and ed ...

A UNIFIED METHOD FOR THE ANALYSIS OF NONLINEAR ...

Fatigue resistance characterization of an asphalt mixture is a complex issue due to: (i) composite nature of the material, (ii) gradation of aggregate particles, (iii) variation of asphalt film thickness, (iv) air voids distributions, (v) asphalt binder nonlinear viscoelastic behavior, (vi) effects of binder oxidative aging as a

Study on Viscoelastic Properties of Asphalt Mixtures ...

This study aims to study the viscoelastic properties of asphalt mixtures incorporating styrene–butadiene–styrene (SBS) polymer and basalt fiber under freeze–thaw (F-T) cycles by using the static creep test. Asphalt mixture samples incorporating styrene–butadiene–styrene (SBS) polymer and basalt fiber were manufactured following the Superpave gyratory compaction (SGC) method and ...

A framework for linear viscoelastic characterization of ...

Mar 06, 2020· An asphalt mixture behaves in a linear viscoelastic (LVE) manner when subjected to small stress or strain levels. It is regarded thermo-rheologically simple when retained in the LVE range. The thermo-rheological simplicity allows the application of the …

(PDF) Study on Structural Performance of Asphalt Concrete ...

The aim of this study is to assess the viscoelastic parameters (i.e., phase angle and dynamic modulus) of asphalt concrete-wearing course (AC-WC) and hot rolled sheet-wearing course (HRS-WC) mixtures obtained from the dynamic modulus test. This study

A Nonlinear Fractional Viscoelastic-Plastic Creep Model of ...

The mechanical behavior of asphalt mixture under high stresses presents nonlinear viscoelasticity and permanent deformation. In this paper, a nonlinear fractional viscoelastic plastic (NFVEP) creep model for asphalt mixture is proposed based on the Nishihara model, with a Koeller spring-pot replacing the Newton dashpot. The NFVEP model considers the instantaneous elasticity, viscoelasticity ...

Research on Fractional Derivative Viscoelastic ...

Based on the definition of fractional derivative, the paper proposed a unique new idea to describe the viscoelastic property of asphalt mixture with fractional calculus. According to the SPT (Simple Performance Tests) test results, the dynamic modulus and phase angle of asphalt mixture were determined. The result of the test was fitted with the classical Kelvin model, the Maxwell model, the ...

(PDF) Viscoelastic Parameters of Asphalt Mixtures ...

Jun 28, 2019· We present two methods used in the identification of viscoelastic parameters of asphalt mixtures used in pavements. The static creep test and the dynamic test, with a …

A Prediction Model on Viscoelastic Fatigue Damage of ...

An asphalt mixture is a typical viscoelastic material, and its fatigue damage is related to its viscoelastic properties. Under repeated traffic loading, the combined effects of creep damage and fatigue damage will shorten its fatigue life. Currently, the evaluation of the fatigue damage of asphalt mixtures rarely considers the combined effects ...

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