concrete testingcharacterisation of oxidative ageing in

Concrete Testing: Characterisation of oxidative ageing in ...

CONCRETE TESTING 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 ageing upon the ultrasonic velocity and attenuation measurements. The

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Concrete Testing: Characterisation of oxidative ageing in ...

Keywords: Asphalt concrete, complex modulus, dynamic modulus, oven-ageing, ultrasonic velocity, attenuation. Introduction Asphalt 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

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Concrete Testing: Characterisation of oxidative ageing in ...

Concrete Testing: Characterisation of oxidative ageing in asphalt concrete – Part 2: Estimation of complex moduli Buy Article: $22.00 + tax ( Refund Policy )

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Characterisation of oxidative ageing in asphalt concrete ...

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

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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. The embrittlement temperatures, ie low-temperature cracking, of the mixtures with ...

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Characterisation of oxidative ageing in asphalt concrete ...

A study to assess oxidative ageing of asphalt concrete using non-collinear wave mixing of two dilatational waves is presented. Criteria were used to assure that the detected scattered wave originated via wave interaction in the asphalt concrete and not from non-linearities in the testing equipment.

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Characterisation of oxidative ageing in asphalt concrete ...

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 top surface, which leads to

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Characterisation of oxidative ageing in asphalt concrete ...

Characterisation of oxidative aging in asphalt concrete – Part 1: Ultrasonic velocity and attenuation measurements and acoustic emission response under thermal cooling. By Henrique Reis and Behzad Behnia. Proposed Versatile Model for Determining Poisson’s Ratio for Civil Engineering Applications based on Elastic Modulus .

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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. The embrittlement temperatures, ie low-temperature cracking, of the mixtures with ...

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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 ...

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(PDF) Characterization of oxidative aging in asphalt ...

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 ageing ...

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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 ...

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Field estimation of oxidative ageing in asphalt concrete ...

Asphalt concrete (AC) pavements are exposed to a number of harsh damaging elements during service, such as extreme environments in hot and cold regions, oxidative ageing and severe traffic loadings. Oxidative ageing is one of the main contributors to pavement degradation. High levels of oxidative ageing can significantly

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Field assessment of oxidative aging in asphalt concrete ...

Field assessment of oxidative aging in asphalt concrete pavements with unknown acoustic properties Megan E. McGoverna, William G. Buttlarb, Henrique Reisa,⇑ a Department of Industrial and Enterprise Systems Engineering, University of Illinois at Urbana-Champaign, 104 S. Mathews Avenue, Urbana, IL 61801, United States bDepartment of Civil and Environmental Engineering, University of Illinois ...

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Estimation of oxidative ageing in asphalt concrete ...

Request PDF Estimation of oxidative ageing in asphalt concrete pavements using non-collinear wave mixing of critically-refracted longitudinal waves A study using non-collinear ultrasonic wave ...

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Oxidative Aging - an overview ScienceDirect Topics

The PAV test covers the accelerated oxidative ageing of bitumen by means of pressurized air and elevated temperature in a pressurized ageing vessel. This test method is intended to simulate in-service oxidative ageing of bitumen. Bitumen used in the PAV is first aged by RTFOT or TFOT in order to simulate the short-term thermal-oxidative ageing.

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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.

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Henrique REIS Professor (Full) PhD University of ...

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 ageing ...

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Insight - Non-Destructive Testing and Condition Monitoring ...

Nov 11, 2013  Concrete Testing: Characterisation of oxidative ageing in asphalt concrete – Part 1: Ultrasonic velocity and attenuation measurements and acoustic emission response under thermal cooling pp. 596-604(9) Authors: McGovern, M E; Behnia, B; Buttlar, W G; Reis, H

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Behzad BEHNIA Assistant Professor Ph.D. Clarkson ...

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 ageing ...

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Megan MCGOVERN Research Assistant University of ...

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 ageing ...

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(PDF) Characterization of oxidative aging in asphalt ...

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 ageing ...

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Estimation of oxidative ageing in asphalt concrete ...

A study using non-collinear ultrasonic wave mixing of subsurface longitudinal waves for the assessment of oxidative ageing in asphalt concrete samples with increasing levels of oven ageing is presented. The use of subsurface waves allows for non-destructive interrogation of bituminous structures when only one side of the test specimen is ...

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Field assessment of oxidative aging in asphalt concrete ...

Jul 30, 2016  Because in the field asphalt concrete acoustic properties (i.e., velocities and corresponding attenuations) are unknown, a modified version of the non-collinear wave mixing method is proposed to evaluate oxidative aging levels.Longitudinal transducers mounted on angle wedges are employed to launch subsurface dilatational waves to allow evaluation when there is only access to

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Insight - Non-Destructive Testing and Condition Monitoring ...

Nov 11, 2013  Concrete Testing: Characterisation of oxidative ageing in asphalt concrete – Part 1: Ultrasonic velocity and attenuation measurements and acoustic emission response under thermal cooling pp. 596-604(9) Authors: McGovern, M E; Behnia, B; Buttlar, W G; Reis, H

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Implementation of nondestructive testing and mechanical ...

May 01, 2017  Concrete testing: characterisation of oxidative ageing in asphalt concrete–Part 1: ultrasonic velocity and attenuation measurements and acoustic emission response under thermal cooling. Insight Non-Destr. Test. Condition Monit., 55 (11) (2013), pp. 596-604.

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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 ...

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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.

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Pressure Ageing Vessel PAV Controls Group

Description. The Pressure Ageing Vessel (PAV) has been developed to simulate in-service ageing of asphalt binder after 5 to 10 years. The binder is exposed to high pressure and temperature for 20 or 65 hours (selectable up to 99) to simulate the effect of long-term oxidative ageing.

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Henrique REIS Professor (Full) PhD University of ...

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 ageing ...

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Influence of ageing on the properties of bitumen from ...

Aug 15, 2015  The UNE-EN 12607-1 (AENOR, 2007c) standard has been followed to perform the RTFOT ageing procedure.This procedure simulates the short-term ageing (Jamshidi et al., 2012) that occurs during the mixing process (AENOR, 2007c) and pavement construction phase (Michalica et al., 2008).In this test (), eight glass bitumen containers, each with 35 ± 0.5 g of bitumen, were introduced

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Behzad BEHNIA Assistant Professor Ph.D. Clarkson ...

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 ageing ...

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Relevance of underground rock laboratories for deep ...

Jan 01, 2017  5.1. Introduction5.1.1. Definition of URLs and their purposes. An underground research laboratory or underground rock laboratory (both are referred to as URL) is an underground facility in which site characterization and testing activities are carried out along with technology development and demonstration activities in support of the development of deep geological repositories for radioactive ...

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Testing methods and technical equipment Materials ...

Test methods for fly ash - Part 1: Determination of the free calcium oxide content. DIN EN 480-1. Admixtures for concrete, mortar and grout - Preparation of reference concrete and reference mortar for testing. DIN EN 480-10. Admixtures for concrete, mortar and grout -

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Behzad Behnia Clarkson University - Academia

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 measurements.

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