CALL US

+86 17838360708

characterisation of oxidative ageing in asphalt concrete

characterisation of oxidative ageing in asphalt concrete

Characterisation of oxidative ageing in asphalt concrete ...

May 22, 2014  Oxidative ageing is a key contributor to the deterioration of asphalt concrete pavements[1,2]. Exposure to environmental conditions causes gradual oxidative ageing of the asphalt concrete, where the highest aged material is located at the surface, while the material at the bottom of the pavement is significantly less aged.

get price

Characterisation of oxidative ageing in asphalt concrete ...

Keywords: Asphalt concrete, complex modulus, dynamic modulus, oven-ageing, ultrasonic velocity, attenuation. Introduction Hot mix asphalt (HMA) concrete is one of the most heavily used materials in pavement infrastructure[1]. When exposed to the environment, its material properties are altered as it undergoes oxidative ageing at, or near, the ...

get price

Characterisation of oxidative ageing in asphalt concrete ...

Asphalt concrete mixtures with different levels of oxidative ageing, prepared by oven-ageing the mixture at 135°C for different amounts of time, were used to study the effects of oxidative ageing upon the ultrasonic velocity and attenuation measurements.

get price

Concrete Testing: Characterisation of oxidative ageing in ...

Characterisation of oxidative ageing in asphalt concrete Part 1: Ultrasonic velocity and attenuation measurements and acoustic emission response under thermal cooling M E McGovern, B Behnia, W G Buttlar and H Reis Submitted 19.05.13 Accepted 23.09.13 Figure

get price

Characterisation of oxidative ageing in asphalt concrete ...

Characterisation of oxidative ageing in asphalt concrete - Part 2: Estimation of complex moduli M. E. McGovern, B. Behnia, William G Buttlar, Henrique M Reis Civil and Environmental Engineering

get price

Characterisation of oxidative ageing in asphalt concrete ...

Jul 07, 2014  Characterisation of oxidative ageing in asphalt concrete using a non-collinear ultrasonic wave mixing approach Buy Article: $22.00 + tax (Refund Policy) Authors: McGovern, M E; Buttlar, W G; Reis, H. Source: Insight - Non-Destructive Testing and Condition Monitoring, Volume ...

get price

Characterisation of oxidative ageing in asphalt concrete ...

Characterisation of oxidative ageing in asphalt concrete – Part 1: Ultrasonic velocity and attenuation measurements and acoustic emission response under thermal cooling

get price

Characterization of oxidative aging in asphalt concrete ...

Characterization of oxidative aging in asphalt concrete using a noncollinear ultrasonic wave mixing approach. Although possessing remarkable toughness in its original state, asphalt concrete (AC) becomes brittle and prone to damage with time in the form of costly pavement cracking.

get price

Characterization of oxidative aging in asphalt concrete ...

Asphalt concrete mixtures with different levels of oxidative aging, prepared by oven-aging the mixture at 135 °C for different amounts of time, were used to study the effects of oxidative aging upon the ultrasonic phase velocities and attenuation measurements. It was a observed that both the dilatational and shear velocities increase up to approximately 24 hours of aging after which they ...

get price

Characterisation of oxidative aging in asphalt concrete ...

Asphalt concrete mixtures with different levels of oxidative ageing, prepared by oven-ageing the mixture at 135ºC for different amounts of time, were used to study the effects of oxidative aging upon the ultrasonic velocity and attenuation

get price

Characterization of oxidative aging in asphalt concrete ...

Mar 09, 2014  Asphalt concrete mixtures with different levels of oxidative aging, prepared by oven-aging the mixture at 135 °C for different amounts of time, were used to study the effects of oxidative aging upon the ultrasonic phase velocities and attenuation measurements.

get price

Oxidative Aging - an overview ScienceDirect Topics

B.S. Underwood, in Advances in Asphalt Materials, 2015 9.7 Summary. The influence of oxidative aging on the viscosity and modulus of asphalt binder and on the modulus of asphalt mixtures has been studied. It was found that very little experimental data have been gathered on the influence of oxidative aging in asphalt mixtures.

get price

Characterization of oxidative aging in asphalt concrete ...

Mar 09, 2014  Asphalt concrete mixtures with different levels of oxidative aging, prepared by oven-aging the mixture at 135 C fordifferent amounts of time, were used to study the effects of oxidative aging upon the ultrasonic phase velocities andattenuation measurements. It was a observed that both the dilatational and shear velocities increase up to approximately24 hours of aging after which they ...

get price

Effects of Oxidative Aging on Asphalt Mixture Properties ...

Jan 01, 2012  Such characterization is investigated to incorporate the aging effects into a more comprehensive analytical framework for predicting the performance of asphalt concrete pavements. Finally, this framework is used to evaluate the aging effects on an example asphalt concrete pavement.

get price

‪Megan McGovern‬ - ‪Google Scholar‬

Concrete Testing: Characterisation of oxidative ageing in asphalt concrete–Part 2: Estimation of complex moduli ME McGovern, B Behnia, WG Buttlar, H Reis Insight-Non-Destructive Testing and Condition Monitoring 55 (11), 605-609 , 2013

get price

Behzad Behnia Clarkson University - Academia

Characterisation of oxidative ageing in asphalt concrete – Part 2: Estimation of complex moduli more by Behzad Behnia The estimation of the dynamic Young’s (uniaxial) and shear complex moduli based upon ultrasonic measurements are presented.

get price

Asphalt Pavements - Google Books

Nov 06, 2014  Asphalt Pavements contains the proceedings of the International Conference on Asphalt Pavements (Raleigh, North Carolina, USA, 1-5 June 2014), and discusses recent advances in theory and practice in asphalt materials and pavements. The contributions cover a wide range of topics:- Environmental protection and socio-economic impacts- Additives and mo

get price

Behzad Behnia Clarkson University

Implementation of nondestructive testing and mechanical performance approaches to assess low temperature fracture properties of asphalt binders. International Journal of Pavement Research and Technology, 10(3), 219-227. Behnia, B., Buttlar, W. G., Reis, H. (2016). Nondestructive low-temperature cracking characterization of asphalt materials.

get price

ASNT NDT Library - $name

Rejuvenators are products that aim to restore the physical and chemical properties of aged bitumen. To evaluate rejuvenators’ restorative properties of aged asphalt concrete, artificially oven-aged (for 36 h at 408 K [135 °C]) asphalt concrete specimens were coated with a rejuvenator (10% by weight of the binder) and left to dwell for the following prescribed amounts of time: 3 to 6 days in ...

get price

Characterization of oxidative aging in asphalt concrete ...

SPIE Digital Library Proceedings. CONFERENCE PROCEEDINGS Papers Presentations

get price

Characterization of oxidative aging in asphalt concrete ...

Mar 09, 2014  Asphalt concrete mixtures with different levels of oxidative aging, prepared by oven-aging the mixture at 135 C fordifferent amounts of time, were used to study the effects of oxidative aging upon the ultrasonic phase velocities andattenuation measurements. It was a observed that both the dilatational and shear velocities increase up to approximately24 hours of aging after which they ...

get price

Oxidative Aging - an overview ScienceDirect Topics

B.S. Underwood, in Advances in Asphalt Materials, 2015 9.7 Summary. The influence of oxidative aging on the viscosity and modulus of asphalt binder and on the modulus of asphalt mixtures has been studied. It was found that very little experimental data have been gathered on the influence of oxidative aging in asphalt mixtures.

get price

Effects of pore structure on oxidative aging and related ...

Oct 01, 2017  Aging in asphalt concrete (AC) is an important issue that has been well studied by researchers for decades. Although some works have been conducted to evaluate the effect of total pore on aging, there is lack of study on how different type of pores or pore structure affects the aging process and related mechanical properties.

get price

Significance of Oxidative Aging on the Thermal Cracking ...

May 26, 2016  The resistance of asphalt concrete pavements to thermal cracking is fundamentally related to the asphalt mix stiffness, strength, and contraction properties. These properties continuously change over time with the oxidative aging of the asphalt binder in the mix.

get price

Asphalt Oxidation: Advantages of Pressure Aging Vessel ...

Equipment. We recommend the HM-74 Pressure Aging Vessel to simulate long-term oxidative aging of your asphalt binder samples. This unit: Includes a platinum RTD device for accurate temperature uniformity. Offers safety features such as a pressure relief valve and high-temperature shut-down. Has a USB port for seamless data storage.

get price

Durability of Asphalt - It's Aging in the Dark ...

Surface Characterization of Colloidal Silica Nanoparticles by Second Harmonic Scattering: Quantifying the Surface Potential and Interfacial Water Order ... A Model for Oxidative Aging of Rubber-Modified Asphalts and Implications to Performance Analysis. ... Multiscale modeling approach for asphalt concrete and its implications on oxidative ...

get price

Evaluation of the effect of aging on mechanical and ...

This paper investigates the effect of oxidative aging of asphalt binders on their material characteristics and fatigue fracture properties during controlled-strain, dynamic mechanical testing. Cylindrical sand asphalt samples were fabricated with an unaged and two aged binders at different levels of aging. Various dynamic mechanical tests (strain sweep, frequency sweep, and time sweep) were ...

get price

Evaluation of Chemical and Rheological Aging Indices to ...

Jun 29, 2018  Oxidative age hardening in asphalt binder leads to embrittlement. Embrittled asphalt is prone to fatigue and thermal cracking. Therefore, the ability to predict asphalt binder oxidative age hardening within a pavement throughout its service life could inform improved pavement material selection, design, and maintenance practices.

get price

References Long-Term Aging of Asphalt Mixtures for ...

The updates field calibrate the original project aging model (PAM), develop procedures to estimate the PAM inputs, and develop a framework by which the predicted changes in asphalt binder properties that are due to oxidative aging can be related to corresponding changes in asphalt mixture performance.

get price

Effects of oxidative aging on asphalt mixture properties ...

title = "Effects of oxidative aging on asphalt mixture properties", abstract = "Aging has long been recognized as a contributing factor to fatigue distress of asphalt concrete pavement. Several research studies have been undertaken to gain fundamental understanding of the aging phenomenon at the asphalt binder level.

get price

State of the Art Study on Aging of Asphalt Mixtures and ...

The detrimental effects of hardening in asphalt pavements were first recognized by pioneering pavement engineers in the 1900s and have been studied extensively during the last 70 years. This hardening process, referred to as asphalt aging, is generally defined as change in the rheological properties of asphalt binders/mixtures due to changes in chemical composition during construction and its ...

get price

An equation-based multiphysics modelling framework for ...

Abstract Long-term oxidative ageing occurs in asphalt pavements when they are exposed to the ambient environment for extended periods. This ageing phenomenon is dependent on multiple physical fields, including heat transfer, oxygen diffusion from air into interconnected air voids of asphalt pavement, oxygen diffusion from air void channels to asphalt mastic inside, and growth of oxidation ...

get price

Behzad Behnia Clarkson University - Academia

Characterisation of oxidative ageing in asphalt concrete – Part 2: Estimation of complex moduli more by Behzad Behnia The estimation of the dynamic Young’s (uniaxial) and shear complex moduli based upon ultrasonic measurements are presented.

get price