investigation of hotmix asphalt dynamic modulus by means

Investigation of Hot-Mix Asphalt Dynamic Modulus by Means ...

Jan 01, 2010  Investigation of Hot-Mix Asphalt Dynamic Modulus by Means of Field-Measured Pavement Response Alireza Bayat and Mark Knight Transportation Research Record 2010 2154 :

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AN INVESTIGATION INTO DYNAMIC MODULUS OF HOT-MIX

AN INVESTIGATION INTO DYNAMIC MODULUS OF HOT-MIX ASPHALT AND IT’S CONTRIBUTING FACTORS Mary Marjorie Robbins Master of Science, May 9, 2009 (B.S.C.E., University of Toledo, 2005) 174 Typed Pages Directed by David H. Timm One of the key elements of mechanistic-empirical (M-E) flexible pavement

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Dynamic Modulus of Hot Mix Asphalt

Figure 1 – Different Testing Machines Used to Measure the Dynamic 3 Modulus of Hot Mix Asphalt Figure 2 – Black Space Diagrams: a) Non-linearity 9.5mm Mix; b) SPT’s 8 Only - 9.5mm; c) Non-SPT - 25mm; d) SPT’s Only - 25mm Figure 3 – Master Stiffness

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An Investigation into Dynamic Modulus of Hot-Mix Asphalt ...

Apr 16, 2009  An investigation into the Witczak 1-37A and the Witczak 1-40D E* predictive equations, both utilized by the MEPDG and another recently developed predictive equation, the Hirsch model, was completed. Comparisons were drawn with E* laboratory results for mixtures constructed as part of the National Center for Asphalt Technology’s (NCAT) 2006 ...

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Dynamic Modulus of Hot Mix Asphalt - NJ

The dynamic modulus database also provided the opportunity to evaluate how the dynamic modulus relates to measured permanent deformation (rutting) and fatigue cracking tests. Flow Number testing, in accordance with AASHTO TP79, Determining the Dynamic Modulus and Flow Number for Hot Mix Asphalt (HMA) Using the Asphalt

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An Investigation into Dynamic Modulus of Hot-Mix Asphalt ...

FIGURE 5.1 Cross-section of N9. 5.3.1 Definition of Strain - "An Investigation into Dynamic Modulus of Hot-Mix Asphalt and Its Contributing Factors"

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E* - DYNAMIC MODULUS

Modulus, E*, as a test method to characterize hot-mix asphalt mix designs. The project is a 30-month effort to: evaluate problems ... by definition, is the Dynamic Modulus. In the general literature, however, the term, “Dynamic Modulus”, is often used to denote any type of modulus that has been determined under “non-static” load

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An Investigation into Dynamic Modulus of Hot-Mix Asphalt ...

FIGURE 5.1 Cross-section of N9. 5.3.1 Definition of Strain - "An Investigation into Dynamic Modulus of Hot-Mix Asphalt and Its Contributing Factors"

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TR-599, Investigation of Warm Mix Asphalt Using Iowa ...

4. Dynamic modulus results show that, on average, HMA will have higher dynamic modulus values. This means the HMA exhibits stiffer material properties compared to WMA; however, this may not necessarily mean superior performance in all cases. 5. Flow number results show that WMA has reduced flow number values compared to HMA. The only exception

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LTPP Computed Parameter: Dynamic Modulus FHWA

Aug 16, 2007  The primary objective of this study is to develop estimates of the dynamic modulus of hot mix asphalt layers on Long-Term Pavement Performance (LTPP) test sections following the models used in the Mechanistic-Empirical Pavement Design Guide (MEPDG), for storage in the LTPP Pavement Performance Database. Other factors to be investigated include:

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Investigation into hot-mix asphalt moisture-induced damage ...

Jan 15, 2014  The SPT dynamic modulus test can be used to assess the moisture susceptibility of asphaltic mixtures based on the retained dynamic modulus stiffness ratio (ESR). The correlation from the scatter plot graph shows a good relationship between the TSR and ESR of the asphaltic mixtures with an R 2 value of 0.70.

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How the Mix Factors Affect the Dynamic Modulus of Hot-Mix ...

Hot-mix asphalt (HMA) is a composite material consisting of stone-aggregates, sand, asphalt binder and additives. The properties of this combined material are dependent on the volumetric parameters used in the mix design. This study investigates the effects of volumetric mix factors on the dynamic moduli (E*) of eleven categories of HMAs. For each category of asphalt mixture, the variations in ...

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Investigation of dynamic behavior of hot mix asphalt ...

This paper aims to study the performance of asphalt concrete in which some of the fractional fine aggregate is substituted with crushed glass material. This asphalt containing glass cullet as an aggregate is called “glasphalt” and has been used as a means of disposing surplus waste glass since the 1960s. In this study, some important dynamic properties of glasphalt, including fatigue life ...

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A Multiple Laboratory Study of Hot Mix Asphalt Performance ...

The complex dynamic modulus, E*, is defined as the absolute value of the maximum (peak‐to‐ peak) stress divided by the maximum recoverable (peak‐to‐peak) axial strain for a hot mix asphalt (HMA) cylindrical specimen subjected to a sinusoidal loading.

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Investigation on statistical characteristics of asphalt ...

Sep 01, 2017  Based on the Ref. , the standard testing method for investigating the dynamic modulus of asphalt, asphalt binder and asphalt concrete is conducted on asphalt mixture performance tester.The experiment specimens are fabricated as a ϕ100 × 150 mm cylinder.The dynamic moduli under loading frequencies including 0.01 Hz, 0.1 Hz, 1 Hz, 5 Hz, 10 Hz, 25 Hz, 50 Hz and 100 Hz are tested

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Research 334 - Flexural modulus of typical NZ structural ...

HMA Hot mix asphalt ITT Indirect tensile tests ... • Mean ITT elastic modulus values for the mixes used in this investigation were established and are presented in the report. These results should not be used directly as pavement design inputs but they do show trends and indicative values.

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Investigation of Low Temperature Cracking in Asphalt

A semi-empirical model, based on Hirsch model (1962) was proposed by Christensen et al. (2003) to estimate the extensional and shear dynamic modulus of asphalt mixture. The effective model was generated by combining aggregate, asphalt binder and air void in parallel and perpendicular direction as follows (see Figure 16):

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Pavement Manual: Hot-Mix Asphalt Pavement Mixtures

Anchor: #i1013899 Section 6: Hot-Mix Asphalt Pavement Mixtures Anchor: #i1013905 6.1 General. Hot-mix asphalt (HMA) is a generic term that includes many different types of mixtures of aggregate and asphalt cement (binder) produced at elevated temperatures (generally between 300-350ºF) in an asphalt

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Advanced approaches to hot-mix asphalt dynamic modulus ...

Soft computing applications in pavement and Infrastructure Engineering, 13(5): 349–355. infrastructure management: state-of-the-art. In Proceedings of Pellinen, T.K. 2001. Investigation of the use of dynamic modulus the 82nd Annual Meeting of the Transportation Research Board, as an indicator of hot-mix asphalt performance.

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Distribution of air voids in compacted Hot-Mix Asphalt ...

Distribution of air voids in compacted Hot-Mix Asphalt samples ... As such, monitoring of air voids during construction of asphalt pavement layers is not only a means of Quality Control (QC) and Quality Assurance (QA), but also ... as dynamic modulus and repeated axial permanent deformation tests. Typically, 120 mm high ...

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Characterization of Various Plant-Produced Asphalt ...

A. Bayat and M. Knight, “Investigation of hot-mix asphalt dynamic modulus by means of field-measured pavement response,” Transportation Research Record, vol. 2154, pp. 138–145, 2010. View at: Publisher Site Google Scholar

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Investigation of Warm-Mix Asphalt Using Iowa Aggregates

Investigation of Warm-Mix Asphalt Using Iowa Aggregates Published Date: 2011-04-01. Language: ... Dynamic modulus results show that, on average, HMA will have higher dynamic modulus values. This means the HMA exhibits stiffer material properties compared to WMA; this may not necessarily mean superior performance in all cases; Flow number ...

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LTPP Computed Parameter: Dynamic Modulus FHWA

Aug 16, 2007  The primary objective of this study is to develop estimates of the dynamic modulus of hot mix asphalt layers on Long-Term Pavement Performance (LTPP) test sections following the models used in the Mechanistic-Empirical Pavement Design Guide (MEPDG), for storage in the LTPP Pavement Performance Database. Other factors to be investigated include:

get price

A Multiple Laboratory Study of Hot Mix Asphalt Performance ...

The complex dynamic modulus, E*, is defined as the absolute value of the maximum (peak‐to‐ peak) stress divided by the maximum recoverable (peak‐to‐peak) axial strain for a hot mix asphalt (HMA) cylindrical specimen subjected to a sinusoidal loading.

get price

Investigation of dynamic behavior of hot mix asphalt ...

This paper aims to study the performance of asphalt concrete in which some of the fractional fine aggregate is substituted with crushed glass material. This asphalt containing glass cullet as an aggregate is called “glasphalt” and has been used as a means of disposing surplus waste glass since the 1960s. In this study, some important dynamic properties of glasphalt, including fatigue life ...

get price

Advanced approaches to hot-mix asphalt dynamic modulus ...

Soft computing applications in pavement and Infrastructure Engineering, 13(5): 349–355. infrastructure management: state-of-the-art. In Proceedings of Pellinen, T.K. 2001. Investigation of the use of dynamic modulus the 82nd Annual Meeting of the Transportation Research Board, as an indicator of hot-mix asphalt performance.

get price

Pavement Manual: Hot-Mix Asphalt Pavement Mixtures

Anchor: #i1013899 Section 6: Hot-Mix Asphalt Pavement Mixtures Anchor: #i1013905 6.1 General. Hot-mix asphalt (HMA) is a generic term that includes many different types of mixtures of aggregate and asphalt cement (binder) produced at elevated temperatures (generally between 300-350ºF) in an asphalt

get price

Laboratory Evaluation on the Static and Dynamic Modulus of ...

shear flow of hot mix asphalt (HMA) surface. Fortunately, the high-modulus asphalt concrete (HMAC) that aims to increase the mixture dynamic modulus has received wide attentions worldwide to tackle rutting problems [1,2]. Originated in France, this technology has been successfully used in many nations. While in China, the French

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Research 334 - Flexural modulus of typical NZ structural ...

HMA Hot mix asphalt ITT Indirect tensile tests ... • Mean ITT elastic modulus values for the mixes used in this investigation were established and are presented in the report. These results should not be used directly as pavement design inputs but they do show trends and indicative values.

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Fatigue Evaluation Criteria for Aged Hot-Mix Asphalt

The primary objective of this investigation was to develop fatigue life criteria to be used as part of field evaluations of aged HMA pavements. 2 BACKGROUND . 2.1 Asphalt Fatigue Testing . Fatigue loading of HMA pavement layers can assume any mode of loading among an infinite spectrum of possible load patterns (Monismith and Deacon 1969).

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Investigation of Low Temperature Cracking in Asphalt

A semi-empirical model, based on Hirsch model (1962) was proposed by Christensen et al. (2003) to estimate the extensional and shear dynamic modulus of asphalt mixture. The effective model was generated by combining aggregate, asphalt binder and air void in parallel and perpendicular direction as follows (see Figure 16):

get price

An investigation into dynamic modulus of Western Australia ...

This study aims to investigate the dynamic modulus of Western Australian asphalt mixes, considering three different mixes with varying maximum aggregate sizes of 7 mm, 10 mm, and 14 mm. For this study, all test specimens were controlled to reach a 5% air-void with a Survopac gyratory compactor.

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Thickness Design of Asphalt Layer Based on Dynamic Modulus ...

Jul 21, 2014  According to China's specification, the dynamic modulus testing was carried out for the materials of this highway. The results of calculating and analysis indicated that the mechanical responses in asphalt pavement were different and the dynamic modulus should be used for the thickness design of the asphalt layer in China.

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(PDF) A Multiple-Laboratory Study of Hot Mix Asphalt ...

The Asphalt Handbook, Manual Series No. 4. The Asphalt Institute, Lexington, KY. (1998 edition, reprinted in 2000) 16. Pellinen, T. Investigation of the Use of Dynamic Modulus as an Indicator of Hot‐Mix Asphalt Performance, Ph.D. Dissertation, Arizona State University, 2001.

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THE EFFECT OF LOOSE MIX AGING ON THE PERFORMANCE ...

the performance of asphalt pavements. An investigation of the effects of lowering ... performed. Hamburg Wheel Tracking, Flow Number, Dynamic Modulus and Fracture Energy testing were used to evaluate mechanistic properties of the materials. ... hot mix asphalt production and placement and their role in climate change. In response to

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