2 resilient modulus testing of asphalt concrete nchrp
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2 resilient modulus testing of asphalt concrete nchrp.

2 Resilient Modulus Testing of Asphalt Concrete NCHRP ...

Suggested Citation:"2 Resilient Modulus Testing of Asphalt Concrete."Transportation Research Board. 1997. NCHRP Web Doc 14 Laboratory Determination of Resilient Modulus for Flexible Pavement Design: Final Report.

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NCHRP Web Doc 14 Laboratory Determination of

2 Resilient Modulus Testing of Asphalt Concrete 10–96; 3 Resilient Modulus Evaluation of Aggregate Base and Subgrade Materials 97–250; 4 Significant General Findings 251–277; 5 Summary, Conclusions and General Recommendations

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Laboratory Determination of Resilient Modulus for Flexible ...

determination of the resilient modulus of hot mix asphalt (HMA) concrete, using repeated load indirect tensile test techniques. The procedure involves resilient modulus test-ing at 77oF. 1.2 Testing Prerequisites Resilient modulus testing shall be conducted after sys-tem response has been verified by testing synthetic speci-

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RESILIENT MODULUS AND THE FATIGUE PROPERTIES OF

pavements and to compare the measured values with those predicted by the NCHRP Design Guide. To achieve these objectives, asphalt concrete beams were tested in third point-bending at constant strain, at four temperatures and four levels of strain. Dynamic resilient modulus tests were performed on asphalt cylindrical

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Dynamic and Resilient Modulus of Mn/DOT Asphalt

in the National Cooperative Highway Research Program (NCHRP) 9-29. In addition, a preliminary investigation explored the possibility of measuring the complex modulus of asphalt mixtures using a less expensive vibration testing device. The raw test data was manipulated to obtain modulus and phase angle values for each

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LABORATORY DETERMINATION OF RESILIENT MODULUS

To reliably determine resilient modulus, axial deformation of base and subgrade materials should be measured on the specimen using either (1) an optical extensometer, (2) non-contact proximity gages or (3) small LVDTs supported by lightweight clamps. The optical extensometer is highly recommended. For granular materials a vacuum triaxial test ...

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Predicting the Resilient Modulus of Asphalt Concrete from ...

The NCHRP 1-37A Guide for Mechanistic-Empirical Design of New and Rehabilitated Design Structures introduces the dynamic modulus as the material property to characterize asphalt concrete. This is a significant change from the resilient modulus used in the previous AASHTO pavement design guide.

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Workability And Resilient Modulus Of Asphalt Concrete

and resilient modulus of asphalt concrete mixtures ... Resilient Modulus MR Testing for Asphalt Bound Materials Conducted for The Texas Department of Transportation in cooperation with the U S Department of Transportation ... nchrp web doc 14 laboratory determination of resilient,

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Mixture Performance Testing - Asphalt Institute

The modulus data is used to understand a mixture’s ability to respond to slow and fast loads at high and low temperatures. Simple Shear Test at Constant Height test measures shear force required to shear a sample. This is a destructive test. 2; Resilient Modulus (M r) Probably one of the older and most widely used of the modulus tests.

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Resilient Modulus to Dynamic Modulus Relationship and ...

conclusions on the effect of FORTA fibers on resilient modulus values. Table 1 shows the estimated values for the resilient modulus of the FORTA reinforced asphalt concrete mixtures based on this correlation. Figure 1. Relationship between resilient modulus and dynamic modulus at

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(PDF) Resilient Modulus of Recycled Asphalt Pavement and ...

Resilient Modulus of Recycled Asphalt Pavement and Recycled Concrete Aggregate Ozlem Bozyurt 1 , James M. Tinjum, PhD, PE, M. ASCE 2 , Young-Hwan Son, PhD 3 , Tuncer B.

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Development of Routine Resilient MODULUS Testing: New ...

incorporates resilient modulus testing of pavements into the design and evaluation procedure, and the Asphalt Aggregate Mixture Analysis System (AAMAS, NCHRP Report 338) uses resilient modulus to measure engineering properties (fatigue and thermal cracking, moisture

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NCHRP Asphalt-Aggregate Mixture Analysis System

testing of asphalt concrete mixtures. Section I provides criteria and values recommended for selecting the mixture compo­ nents, and Section II presents the procedures used to design dense-graded asphalt concrete mixtures. Figure 2 shows the mixture design procedure (including Sections I and II) in

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Standard Test Method for Determining the Resilient Modulus ...

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.. Other Document. NCHRP Project 1-28A Research Results Digest Number 285Laboratory Determination of Resilient Modulus for Flexible Pavement Design, January 2004. ASTM Standards. D8 Terminology Relating to Materials for Roads

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E* - DYNAMIC MODULUS

Pavement Systems”, currently under development in NCHRP Project 1-37A, the modulus of the asphalt concrete -at all analysis levels of temperature and time rate of load- is determined from a master curve constructed at a reference temperature, generally 70F. Master curves are constructed using the principle of time-temperature superposition. The

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HMA Performance Tests – Pavement Interactive

HMA’s stress-strain relationship, as characterized by elastic or resilient modulus, is an important characteristic. Although the elastic modulus of various HMA mix types is rather well-defined, tests can determine how elastic and resilient modulus varies with temperature.

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A Methodology for Determination of Resilient Modulus of ...

Jun 09, 2011  The resilient modulus can be expressed as 𝑀 𝑅 = 𝜎 𝜀 𝑟, ( 1) where 𝜎 is the applied stress and 𝜀 𝑟 is the recoverable axial strain. 𝑀 𝑅 describes the mechanical response of a pavement base or subgrade to the applied cyclic (traffic) load, and, hence it is considered to be an essential parameter for pavement design.

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Resilient Modulus Development of Aggregate Base and ...

The primary objective of this study was to quantify stiffness (resilient modulus) of aggregate base containing recycled asphalt and concrete pavements. This was accomplished by (1) reviewing other states’ specifications related to implementation of the recycled materials in pavement design and (2) using the statewide (cities, counties

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(41037) (12467) Comparison between resilient modulus and ...

of the conventional resilient modulus test. The resilient modulus is theoretically an ideal elastic modulus (Huang 2004), which only considers recoverable strain, but an asphalt concrete material is believed to respond as a viscoelastic material. In the USA, the NCHRP 1-37A design guide (TRB 2004) uses the dynamic modulus as an input

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(PDF) Comparing Resilient Modulus and Dynamic Modulus of ...

Development of dynamic modulus master curves for hot-mix asphalt with abbreviated testing temperatures By alex apeagyei Implementation of Superpave Binder and Asphalt Mix Specification to Improve Pavement Performance in Pakistan Final Report The National Academies Policy and Global Affairs Washington, DC

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Predicting the Resilient Modulus of Asphalt Concrete from ...

The NCHRP 1-37A Guide for Mechanistic-Empirical Design of New and Rehabilitated Design Structures introduces the dynamic modulus as the material property to characterize asphalt concrete. This is a significant change from the resilient modulus used in the previous AASHTO pavement design guide.

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EVALUATION OF RESILIENT MODULUS ESTIMATION

project was assigned for testing resilient modulus of bound, i.e., asphalt concrete, materials. A comparison of various empirical methods is conducted based on this research outcomes, and the method leading to the closest approximation to the measured modulus values are presented accordingly.

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(41037) (12467) Comparison between resilient modulus and ...

of the conventional resilient modulus test. The resilient modulus is theoretically an ideal elastic modulus (Huang 2004), which only considers recoverable strain, but an asphalt concrete material is believed to respond as a viscoelastic material. In the USA, the NCHRP 1-37A design guide (TRB 2004) uses the dynamic modulus as an input

Get Price

Predicting the Resilient Modulus of Asphalt Concrete from ...

The NCHRP 1-37A Guide for Mechanistic–Empirical Design of New and Rehabilitated Design Structures introduces the dynamic modulus as the material property to characterize asphalt concrete. This is a significant change from the resilient modulus used in the previous AASHTO pavement design guide. This paper presents an analytical method of ...

Get Price

Development of Routine Resilient MODULUS Testing: New ...

incorporates resilient modulus testing of pavements into the design and evaluation procedure, and the Asphalt Aggregate Mixture Analysis System (AAMAS, NCHRP Report 338) uses resilient modulus to measure engineering properties (fatigue and thermal cracking, moisture

Get Price

Standard Test Method for Determining the Resilient Modulus ...

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.. Other Document. NCHRP Project 1-28A Research Results Digest Number 285Laboratory Determination of Resilient Modulus for Flexible Pavement Design, January 2004. ASTM Standards. D8 Terminology Relating to Materials for Roads

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RESILIENT MODULUS OF UNBOUND AND BITUMINOUS

2. RESILIENT MODULUS (M R) Resilient modulus is the elasticity modulus of a material under repeated loads and is a measure of the distribution of the loads through pavement layers. Resilient modulus also controls fatigue cracks caused by tensile stresses at the bottom of Asphalt Concrete (AC) layer and permanent deformations throughout the ...

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NCHRP Asphalt-Aggregate Mixture Analysis System

testing of asphalt concrete mixtures. Section I provides criteria and values recommended for selecting the mixture compo­ nents, and Section II presents the procedures used to design dense-graded asphalt concrete mixtures. Figure 2 shows the mixture design procedure (including Sections I and II) in

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Relating Creep Testing to Rutting of Asphalt Concrete ...

The Iowa Department of Transportation began creep and resilient modulus testing of asphalt concrete mixtures in 1989. Part 1 of this research reported in January 1990 was a laboratory study of hot mix asphalt (HMA) mixtures made with O, 30, 60, 85 and 100% crushed gravel, crushed limestone and crushed quartzite combined with uncrushed sand and gravel.

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E* - DYNAMIC MODULUS

Pavement Systems”, currently under development in NCHRP Project 1-37A, the modulus of the asphalt concrete -at all analysis levels of temperature and time rate of load- is determined from a master curve constructed at a reference temperature, generally 70F. Master curves are constructed using the principle of time-temperature superposition. The

Get Price

LABORATORY DETERMINATION OF RESILIENT MODULUS FOR

To reliably determine resilient modulus, axial deformation of base and subgrade materials should be measured on the specimen using either (1) an optical extensometer, (2) non-contact proximity gages or (3) small LVDTs supported by lightweight clamps. The optical extensometer is highly recommended. For granular materials a vacuum triaxial test ...

Get Price

Workability And Resilient Modulus Of Asphalt Concrete

and resilient modulus of asphalt concrete mixtures ... Resilient Modulus MR Testing for Asphalt Bound Materials Conducted for The Texas Department of Transportation in cooperation with the U S Department of Transportation ... nchrp web doc 14 laboratory determination of resilient,

Get Price

Resilient Modulus to Dynamic Modulus Relationship and ...

conclusions on the effect of FORTA fibers on resilient modulus values. Table 1 shows the estimated values for the resilient modulus of the FORTA reinforced asphalt concrete mixtures based on this correlation. Figure 1. Relationship between resilient modulus and dynamic modulus at

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Use of the Resilient Modulus Test to Characterize Asphalt ...

The resilient modulus (MR) test (ASTM D7369) was used in this study to measure the stiffness of several types of asphalt mixtures and various specimen types. ... The authors thank NCHRP for ...

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