Home / Product / quot;development of a permanent deformation model of asphalt

quot;development of a permanent deformation model of asphalt

The main products are food processing equipment, wood processing equipment, agricultural equipment, packaging machinery, etc. Our equipment has been widely praised in the domestic and foreign markets.

Development of a Permanent Deformation Model of

2009-1-1  The permanent deformation model for various types of asphalt mixtures was developed by using the results of triaxial repeated loading tests. This model was calibrated with the accelerated pavement test (APT) and the Long-Term Pavement Performance (LTPP) database. Through the triaxial repeated loading tests, the permanent deformation model of ...

View More

Characterization of Permanent Deformation of Asphalt ...

A permanent deformation model of asphalt concrete based on shear properties is developed and calibrated. This model is extended and improved from previous

View More

Characterization of Permanent Deformation of Asphalt ...

2018-12-10  A permanent deformation model was established on the basis of the shear stress to strength ratio. The proposed model is able to successfully predict the permanent deformation of the various mixtures without changing the model coefficients and could predict the permanent deformation all the way up to failure, including the tertiary flow.

View More

Cause analysis on permanent deformation for asphalt ...

2015-12-15  Also, the following Zhou’s 3-stage model was employed since it could characterize the permanent deformation development of asphalt pavements for all three stages. A brief summary of these parameters is provided in Table 3.

View More

Characterization of permanent deformation of an asphalt ...

Viscoplastic constitutive equations offer improved prediction of the accumulated permanent deformation in comparison with linear elastic or viscoelastic models. An elastic-viscoplastic continuum model is proposed to simulate the permanent deformation of an asphalt mixture at WesTrack. After analysis of vertical compressive stress under the same loading condition and layer thickness at a ...

View More

(PDF) Prediction of permanent deformation in asphalt

In asphalt pavement material there are different types of distress such as permanent deformation (rutting), fatigue cracking, ravelling, potholes, stripping, etc. There are many reasons for these ...

View More

Permanent deformation and deflection relationship from ...

2017-7-1  The development of permanent deformation in flexible pavements has been a research topic for several decades. Currently there are models included in the structural design of pavements that can predict this type of failure. However, the variables required for the prediction of this distress are complex or difficult to obtain in the field, making ...

View More

Publication-同济交通 李辉教授课题组

Li H.(2008), Development of Mechanics Model for Three-Phase Permanent Deformation of Asphalt Mixtures Under Repeated Loads.Transportation Research Board 87th Annual Meeting, Washington, D.C., Jan. 13-17, 2008. 1. Li H.(2007). Reasonable Modeling of

View More

Characterization and prediction of permanent deformation ...

2017-11-30  The measured plastic strain curves are used to determine the permanent deformation properties in Eq. . Table 1 presents the determined permanent deformation properties of the selected UGMs. The resilient strains corresponding to the 500th load cycle are also recorded and shown in Table 1.By inputting these data into the MEPDG model, the rutting behavior of unbound base can be

View More

公路学院 - chd.cn

Development and Validation of Viscoelastic-Damage Model for Three-Phase Permanent Deformation of Dense Asphalt Mixture. Journal of Materials in Civil Engineering, 24 (7): 842-850. 20.

View More

Characterization of Permanent Deformation of Asphalt ...

2018-12-10  A permanent deformation model was established on the basis of the shear stress to strength ratio. The proposed model is able to successfully predict the permanent deformation of the various mixtures without changing the model coefficients and could predict the permanent deformation all the way up to failure, including the tertiary flow.

View More

SIMULATION OF THE PERMANENT DEFORMATION OF

2008-3-19  This study describes a methodology for simulating the permanent deformation resistance behavior of asphalt concrete mixtures using the discrete element method (DEM). The microstructure of asphalt concrete cores was obtained through X-Ray CT imaging techniques. Rheological tests on asphalt binders and mastics were performed to

View More

Development of an Innovative Uniaxial Compression Test

Development of an Innovative Uniaxial Compression Test to Evaluate Permanent Deformation of Asphalt Mixtures ... model was first developed to predict temperature at different depths of a pavement. Then, the laboratory temperature control system was calibrated by monitoring the temperature inside a dummy specimen to ensure the temperatures at ...

View More

Abridged Procedure To Determine Permanent

BASIS FOR DEVELOPMENT OF PROCEDURE Model Analysis A series of finite-element analyses of the permanent deformation response of a pavement section was conducted using the model proposed (2). The model is intended to capture the macro­ behavior of

View More

A Finite-Element Approach to Predict Permanent

2011-3-9  rheological models (i.e. Power Law, Huet and Huet–Sayegh) to describe permanent deformation behaviour of hot mix asphalt (HMA) and their implementation in a finite-element (FE) code. To accomplish this, an appropriate algorithm was developed for the summation of the different con-

View More

Implementation of the permanent deformation model

2017-8-2  the permanent deformation of the bound layers. By comparing the measured permanent deformation to the one calculated in PEDRO a calibration factor of 0.1001 was found. For the FAS structure the measured rutting in 2010 was equal to 9 mm and 5.31 mm originated from the permanent deformation of the bound layers. For the FAS structure

View More

MICROSTRUCTURAL VISCOPLASTIC CONTINUUM

2021-5-31  This dissertation presents the development of an anisotropic viscoplastic continuum damage model to describe the permanent deformation of asphalt pavements. The model is developed to account for several phenomena that influence the permanent deformation of Asphalt Concrete (AC) at high temperatures. These phenomena include strain rate

View More

Development of Design Methods for Geosynthetic

2017-6-13  permanent surface deformation of the pavement as a function of traffic passes and fatigue life of the asphalt concrete. The damage model for permanent deformation of aggregate within a zone of reinforcement is used to compute permanent surface deformation. The unreinforced models were field calibrated from test sections constructed in two ...

View More

公路学院 - chd.cn

Development and Validation of Viscoelastic-Damage Model for Three-Phase Permanent Deformation of Dense Asphalt Mixture, Journal of Materials in Civil Engineering, 2012.01

View More

公路学院 - chd.cn

Development and Validation of Viscoelastic-Damage Model for Three-Phase Permanent Deformation of Dense Asphalt Mixture. Journal of Materials in Civil Engineering, 24 (7): 842-850. 20.

View More

Evaluation of a permanent deformation model for asphalt ...

2014-12-9  Evaluation of a permanent deformation model for asphalt concrete mixtures using extra-large wheel-tracking and heavy vehicle simulator tests Abubeker W. Ahmed Pavement Technology, Swedish National Road and Transport Research Institute, SE-581 95, Linköping, Sweden; Division of Highway and Railway Engineering, KTH, Royal Institute of Technology ...

View More

[PDF] SUMMARY REPORT ON PERMANENT

1991-2-1  This report evaluates information on the permanent deformation characteristics of asphalt-aggregate mixtures, with an emphasis on laboratory test techniques for measuring mixture resistance to permanent deformation, and on methods for prediction of permanent deformation (rutting) in the upper asphalt bound layers of pavements. Factors influencing the amount of rutting are summarized.

View More

Permanent Deformation Potential in Asphalt Concrete ...

2017-1-4  PERMANENT DEFORMATION POTENTIAL IN ASPHALT CONCRETE OVERLAY OVER PORTLAND CEMENT CONCRETE PAVEMENTS by Mahmoud Ameri-Gaznon and Dallas N. Little Research Engineer Research Report 452-3F Research Study 2-8-86-452 Sponsored by: Texas State Department of Highways and Public Transportation In cooperation with

View More

SIMULATION OF THE PERMANENT DEFORMATION OF

2008-3-19  This study describes a methodology for simulating the permanent deformation resistance behavior of asphalt concrete mixtures using the discrete element method (DEM). The microstructure of asphalt concrete cores was obtained through X-Ray CT imaging techniques. Rheological tests on asphalt binders and mastics were performed to

View More

Development of Mechanics Model for Three-Phase

2008-1-13  Development of Mechanics Model for Three-Phase Permanent Deformation of Asphalt Mixtures Under Repeated Loads. The existing models including the empirical and mechanistic models are analyzed, and it is indicated that they can not describe the three phases’ permanent deformation of asphalt mixture under repeated load.

View More

Implementation of the permanent deformation model

2017-8-2  the permanent deformation of the bound layers. By comparing the measured permanent deformation to the one calculated in PEDRO a calibration factor of 0.1001 was found. For the FAS structure the measured rutting in 2010 was equal to 9 mm and 5.31 mm originated from the permanent deformation of the bound layers. For the FAS structure

View More

Permanent deformation testing for a new South African ...

2021-1-22  materials. To date, no permanent deformation test is incorporated into South African pavement design guides. The objective of this paper is to present the development process of a repeated load axial permanent deformation test protocol and models

View More

Abridged Procedure To Determine Permanent

BASIS FOR DEVELOPMENT OF PROCEDURE Model Analysis A series of finite-element analyses of the permanent deformation response of a pavement section was conducted using the model proposed (2). The model is intended to capture the macro­ behavior of

View More

A new material model for permanent deformations in

2009-1-23  The new material deformation model can take into account the number of the passes, the capacity of the material and its stress state. The deformations in each layer are calculated and then summed together to obtain the total rutting on the surface of the structure. KEY WORDS: Rutting, permanent deformation material model, pavement design.

View More

Development and Validation of Viscoelastic-Damage

Third, a viscoelastic-damage mechanical model is proposed to characterize the permanent deformation of asphalt mixture under repeated load. The proposed model is validated by conducting uniaxial permanent deformation tests on four kinds of asphalt mixtures. The model parameters are obtained by using the principle of least square.

View More

Request a Quote