A predictive equation for dynamic modulus of asphalt
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A predictive equation for dynamic modulus of asphalt .

A predictive equation for dynamic modulus of asphalt ...

2010-4-1  Results of this test showed that the dynamic modulus is sensitive to the mix constituent properties (aggregate type, asphalt content, percentage of recycled asphalt pavement, etc.) and that similar types of mixes had different measured dynamic modulus values. The predictive equation for the dynamic modulus of level 2 reasonably estimated the ...

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A predictive equation for dynamic modulus of asphalt ...

A predictive equation was constructed based on the test data, and compared and verified between the measured and the predicted dynamic modulus. From the results, it was found that the predictive equation correlated well with the measured values.

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A predictive equation for dynamic modulus of asphalt ...

A predictive equation for dynamic modulus of asphalt mixtures used in Korea. The dynamic modulus of an asphalt mixture is widely used as an important material property in mechanisticûempirical (ME) pavement design and analysis because it accounts temperature and time-dependent asphalt mixture modulus.

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A predictive equation for dynamic modulus of asphalt ...

Request PDF A predictive equation for dynamic modulus of asphalt mixtures used in Korea The dynamic modulus of an asphalt mixture is widely used as an important material property in ...

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Validation of a dynamic modulus predictive equation on

2016-5-26  designs, when dynamic modulus data are not avail-able but the composition of the actual mixture is known. There are three widely accepted simplified pre-dictive models. The first one is the Witczak dynamic modulus predictive equation (5), which is imple-mented in the MEPDG. It is a purely empirical model, which has been calibrated on the basis of

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New Predictive Equations for Dynamic Modulus and Phase ...

The sigmoidal equation is usually used to make predictions for dynamic modulus ( E * ), but equations to predict phase angle are still unavailable.In this study, equations to predict both the E * and phase angle for asphalt mixtures were proposed. The expression for the E * prediction in the proposed model is the same as the sigmoidal equation, while the predictive equation for the ...

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VALIDATION OF A DYNAMIC MODULUS PREDICTIVE

There are three widely accepted simplified predictive models. The first one is the Witczak dynamic modulus predictive equation (5), which is implemented in the MEPDG. It is a purely empirical...

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Dynamic Modulus of Hot Mix Asphalt

the accuracy of two commonly utilized dynamic modulus prediction equations; 1) Witczak Prediction Equation and 2) Hirsch Model. The database developed during the study also led to the development of correlations between dynamic modulus and fatigue cracking and rutting performance of asphalt mixtures. Dynamic Modulus, Precision, Simple

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Revised Predictive Model for Dynamic (Complex) Modulus of ...

2018-12-10  Many predictive techniques for determining the dynamic modulus of asphalt concrete mixes have evolved over the past 25 years. One such model, developed at the University of Maryland, has been widely incorporated in design manuals and methods used throughout the world.

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Evaluation of Predictive Models for Estimating Dynamic ...

2011-1-1  Because the determination of stiffness during construction is not straightforward, a common approach uses predictive models to estimate the dynamic modulus of hot-mix asphalt (HMA) specimens. Four predictive models—the Witczak 1999, Witczak 2006, Hirsch, and Al-Khateeb models—were evaluated for their use in estimating the dynamic modulus of ...

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Predictive Equation of Dynamic Modulus for Hot Mix Asphalt ...

2006-5-31  Lots of test result by UTM at laboratory has been used to develop the precise predictive equation. Evaluation of dynamic modulus for 13mm and 19mm surface course and 25mm of base course of hot mix asphalt with granite aggregate and two asphalt binders (AP-3 and AP-5) were carried out.

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New Predictive Equations for Dynamic Modulus and Phase ...

The sigmoidal equation is usually used to make predictions for dynamic modulus ( E * ), but equations to predict phase angle are still unavailable.In this study, equations to predict both the E * and phase angle for asphalt mixtures were proposed. The expression for the E * prediction in the proposed model is the same as the sigmoidal equation, while the predictive equation for the ...

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Validation of a dynamic modulus predictive equation on the ...

The first one is the Witczak dynamic modulus predictive equation , which is implemented in the MEPDG. It is a purely empirical model, which has been calibrated on the basis of 2750 data points from 205 different asphalt mixtures tested in the laboratories of the Asphalt Institute, the University of Maryland, and the Federal Highway Administration.

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Accuracy of predictive models for dynamic modulus of

2021-5-6  Accuracy of predictive models for dynamic modulus of hot-mix asphalt . Abstract . Various models have been developed over the past several decades to predict the dynamic modulus /E*/ of hot-mix asphalt (HMA) based on regression analysis of laboratory measurements. The models most

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Revised Predictive Model for Dynamic (Complex) Modulus of ...

Many predictive techniques for determining the dynamic modulus of asphalt concrete mixes have evolved over the past 25 years. One such model, developed at the University of Maryland, has been widely incorporated in design manuals and methods used throughout the world.

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Modification of Dynamic Modulus Predictive Models for ...

2020-10-13  Yu, Jianhua, "Modification of Dynamic Modulus Predictive Models for Asphalt Mixtures Containing Recycled Asphalt Shingles" (2012). Graduate Theses and Dissertations . 12540.

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Evaluation of Dynamic Modulus Predictive Models for ...

dynamic modulus database and evaluations of the accuracy of four dynamic modulus predictive models (Witczak 1-­‐37A, Witczak 140D, Hirsch -­‐ and Alkhateeb) in estimating the dynamic modulus for typical asphalt mixes in Australia. The sensitivity of the nominated models to

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A STATISTICAL DYNAMIC MODULUS MODEL OF HOT

2017-12-19  In this study, a predictive model for dynamic modulus of HMA was developed taking into consideration several HMA characteristics and testing conditions. 6821 observations of 257 mix specimens from three different laboratory datasets, two from Hawaii and one from Costa Rica,

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Dynamic Modulus Prediction of a High-Modulus Asphalt

2021-6-9  Dynamic modulus is a key evaluation index of the high-modulus asphalt mixture, but it is relatively difficult to test and collect its data. The purpose is to achieve the accurate prediction of the dynamic modulus of the high-modulus asphalt mixture and further optimize the design process of the high-modulus asphalt mixture. Five high-temperature performance indexes of high-modulus asphalt

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Development of a Dynamic Modulus Prediction Model for

The most famous model known in prediction of dynamic modulus for asphalt concretes is the Witczak and Hirsh models. These models didn’t use the mineralogical and chemical properties of aggregates. Witczak models used the passing or refusal percentage to

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Predictive Equation of Dynamic Modulus for Hot Mix Asphalt ...

2006-5-31  Lots of test result by UTM at laboratory has been used to develop the precise predictive equation. Evaluation of dynamic modulus for 13mm and 19mm surface course and 25mm of base course of hot mix asphalt with granite aggregate and two asphalt binders (AP-3 and AP-5) were carried out.

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Dynamic Modulus of Hot Mix Asphalt - NJ

2019-9-19  The dynamic modulus database was also utilized to evaluate two different dynamic modulus predictive equations; 1) Hirsch Model and 2) Witczak Predictive Equation. These are the two most commonly used dynamic modulus prediction equations utilized by the pavement design industry. The test results indicated that the Witczak Prediction

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HMA DYNAMIC MODULUS PREDICTIVE MODELS– A R

2015-5-27  The most important hot-mix asphalt (HMA) property influencing the structural response of a flexible pavement is the HMA modulus (E HMA). Dynamic modulus concepts are reviewed. The construction of master curves for HMA mixtures is presented. The procedures are based on the fitting of a sigmoidal function. Two IE*I predictive equations are presented.

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Measured versus Predicted Dynamic Modulus of Asphalt ...

Abstract. The dynamic modulus (E*) of Asphalt Concrete (AC) is the primary material property used in asphalt pavement design.However, the testing of dynamic modulus of AC is very expensive considering time, equipment and skills. This is why, instead of conducting the laboratory testing, the available regression equations in the literature are very often used to determine the dynamic modulus of AC.

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A Prediction Methodology for the Dynamic Modulus of In ...

2001-6-14  Predictive techniques for determining the dynamic modulus of asphalt concrete mixes have evolved over the past 25 years. However, most predictive equations developed so far are based on the original bitumen properties, with the test temperature being the most important variable in the system.

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Accuracy of predictive models for dynamic modulus of

2021-5-6  Accuracy of predictive models for dynamic modulus of hot-mix asphalt . Abstract . Various models have been developed over the past several decades to predict the dynamic modulus /E*/ of hot-mix asphalt (HMA) based on regression analysis of laboratory measurements. The models most

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Evaluation of Dynamic Modulus Predictive Models for ...

dynamic modulus database and evaluations of the accuracy of four dynamic modulus predictive models (Witczak 1-­‐37A, Witczak 140D, Hirsch -­‐ and Alkhateeb) in estimating the dynamic modulus for typical asphalt mixes in Australia. The sensitivity of the nominated models to

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Modification of the Asphalt Institute Bituminous Mix ...

Modification of the Asphalt Institute Bituminous Mix Modulus Predictive Equation JOHNS. MILLER, J~COB UZAN, AND MATTHEW W. WITCZAK The dynamic modulus test results for five bituminous mix types (crushed stone, gravel, slag, sand-low P200, sand-high P2ool were compared with modulus values predicted by using the Asphalt Institute regression model.

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EVALUATION OF THE HIRSCH MODEL FOR DYNAMIC

2017-6-11  DYNAMIC MODULUS ESTIMATION OF ASPHALT MIXTURES HASSAN MALEKZEHTAB and HAMID NIKRAZ Civil Engineering Dept, Curtin University, Perth, Australia The dynamic modulus of the asphalt mixtures is an important factor in designing or analyzing an asphalt concrete pavement, but it is expensive and time consuming to measure.

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Investigation of factors affecting dynamic modulus and ...

2015-1-30  Cho Y-H, Park D-W, Hwang S-D (2010) A predictive equation for dynamic modulus of asphalt mixtures used in Korea. Constr Build Mater 24(1):513–519. Article Google Scholar 12. Clyne TR, Li X, Marasteanu MO, Engene K (2003) Dynamic modulus and resilient modulus of Mn/dot asphalt

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