State of the Art Report on Ageing Test Methods for Bituminous Pavement Materials

Airey, Gordon

doi:10.1080/1029843042000198568

Cited by 268 publications

(166 citation statements)

References 3 publications

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“…One reason for this is that the UV effect applies to the upper surface of asphalt pavements only and thereby the effect on the total structure can be negligible (Durrieu, Farcas, & Mouillet, 2007). In terms of ageing simulation in laboratory, quite a few methods have been tried (Airey, 2003;Colbert & You, 2012). The most widely used are the rolling thin film oven test (RTFOT) to simulate short-term ageing and the pressure aging vessel (PAV) test to simulate long-term ageing.…”

Section: Road Materials and Pavement Designmentioning

confidence: 99%

Effect of short-term ageing temperature on bitumen properties

Hofko

Falchetto

Grenfell

et al. 2017

Road Materials and Pavement Design

111

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Properties of asphalt mixtures after ageing are fundamental parameters in determining longterm performance (e.g. durability) of these materials. With increasing popularity of reduced temperature mixtures, such as warm-mix asphalt, WMA, the question remains how a reduction in short-term ageing affects the properties after long-term ageing of bituminous materials. This paper aims to improve our understanding of the effect of asphalt manufacturing temperature on ageing and the resulting mechanical properties of bituminous binder by studying the effect of short-and long-term ageing of different bitumen samples as a function of short-term ageing temperatures. For this purpose, round robin experiments were conducted within the RILEM technical committee (TC) 252 chemo-mechanical characterisation of bituminous materials by 10 laboratories from 5 countries using four binders of the same grade (70/100 pen) from different crude sources. The short-term ageing was carried out using the standard procedure for rolling thin film oven test (RTFOT), but varying the temperatures. Long-term ageing was carried out using the standard procedure for pressure aging vessel (PAV) in addition to RTFOT. For the mechanical characterisation, rheological data were determined by using the dynamic shear rheometer (DSR) and conventional tests, with needle penetration and softening point using the ring and ball method. The results show that although different short-term ageing temperatures showed a significant difference in the mechanical properties of the binders, these differences vanished after long-term ageing with PAV.Keywords: bitumen; DSR; long-term ageing; short-term ageing; asphalt; RTFOT; PAV IntroductionAs an organic material, bitumen undergoes changes in its mechanical characteristics, chemical composition and microstructure due to environmental effects over its lifetime (Glotova, Gorshkov, Kats, Shapiro, & Yureva, 1980;Lee, Tia, Ruth, & Page, 1997;Mills-Beale et al., 2012;Yao, Dai, & You, 2015). Loss of volatile components at elevated temperatures and oxidation are two main factors for these changes. In terms of mechanical properties, bitumen tends to become stiffer, more elastic and brittle over time. Road Materials and Pavement Design109 SARA (saturates, aromatics, resins and asphaltenes) fractions can be observed with an increasing amount of asphaltenes and decreasing amount of aromatics over time Lu & Isacsson, 2002). These changes are generally summarised under the term "ageing". Bitumen ageing can be split up into short-term and long-term ageing. In the case of hot mix asphalt, short-term ageing occurs during asphalt mix production, transport and compaction at the construction site, all of which happens within hours. It is characterised by relatively high temperatures ( > 130°C) and thus, high oxidation rates. Long-term ageing occurs in asphalt pavements in the field as a result of exposure to traffic and climatic conditions during its service life. Compared to short-term ageing, long-term ageing is a slow oxidation process tha...

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Section: Road Materials and Pavement Designmentioning

confidence: 99%

Effect of short-term ageing temperature on bitumen properties

Hofko

Falchetto

Grenfell

et al. 2017

Road Materials and Pavement Design

111

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“…The short-term ageing of binder is linked to oxidation and the loss of volatile constituents. For the purpose of testing, the most commonly used tests include the thin-film oven test (TFOT), the rolling thin film oven test (RTFOT), and the rotating flask test ((RFT-12607-3: 2008 [35,36] The goal of the testing is to determine properties of bitumen prior to and after testing, and to define changes in the mass content of the sample [39].…”

Section: Testing Models and Techniques Against Ageingmentioning

confidence: 99%

Starenje vrućih asfaltnih mješavina

2016

JCE

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An overview of current surveys related to the ageing of placed hot mix asphalt and asphalt pavement courses is presented in the paper. Asphalt ageing occurs as a result of external and internal factors. Internal factors include bitumen content in the mixture, thickness of bitumen layer enveloping aggregate grains, air void content, and properties of aggregates and binders. All factors affecting the ageing process of binders and asphalt mixtures are described in detail, including also some of the existing models that are presently used to predict ageing of produced and placed asphalt. Starenje vrućih asfaltnih mješavina U radu je dan pregled dosadašnjih istraživanja vezano za starenje proizvedenih vrućih asfaltnih mješavina i izvedenog asfaltnog sloja. Starenje asfalta događa se uslijed djelovanja vanjskih i unutarnjih čimbenika. Unutarnji čimbenici podrazumijevaju udio bitumena u mješavini, debljinu sloja bitumena oko zrna agregata, volumni udio šupljina te svojstva agregata i veziva. Detaljno su opisani svi utjecajni čimbenici na proces starenja veziva i asfaltnih mješavina te dio prisutnih modela koji se u današnje vrijeme koriste za predviđanje starenja proizvedenog i ugrađenog asfalta.Ključne riječi: starenje veziva, starenje asfaltne mješavine, isparavanje, oksidacija, modeli za predviđanje starenja Übersichtsarbeit Ivica Androjić

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“…thin-film-oven test TFOT, rolling-thin-film-oven test RTFOT, microwave ovens, automatic pressure aging vessels PAV), which can not fully reproduce the influence of each environmental component on mechanical and rheological properties of mixtures and asphaltic binders (Jemison et al, 1991;Choquet and Verhasselt, 1992;Kuppens et al, 1997;Verhasselt, 1997). Furthermore, a significant amount of researches tend to combine these tests and equipment to evaluate material properties changes under real environmental conditions (Jemison et al, 1991;Migliori and Corté, 1998;Montepara, 1999;Montepara and Giuliani, 2000;Airey, 2003). As a general conclusion these test methodologies are unable to reproduce real conditions endured by asphaltic mixtures in situ.…”

mentioning

confidence: 99%

“…On the other hand, the main factors affecting asphaltic mixtures durability, assuming they are properly constructed, are: ageing rate, and moisture damage (Airey, 2003). Therefore, an asphaltic mixture must be designed and constructed not only to endure traffic loads but also environmental conditions.…”

mentioning

confidence: 99%

“…Evaluating the influence of environmental conditions on this type of material behavior is not an easy task. Nowadays it is carried out by isolating every single component (water, temperature, ultra-violet rays, among others) to separately evaluate their influence on binder and mixtures (from a mechanical and chemical point of view) (Kemp and Predoehl, 1981;Welborn, 1984;Kim et al, 1987;Shiau et al, 1991;Bishara et al, 2000;Bocci and Cerni, 2000;Brown and Scholz, 2000;Khalid and Walsh, 2000;Khalid, 2002;Airey, 2003;Said, 2005;Shen et al, 2006). Additionally and generally, these researches employ test methods and equipment (e.g.…”

mentioning

confidence: 99%

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Evaluación de los parámetros mecánicos de una mezcla asfáltica sometida a las condiciones ambientales de la ciudad de Bogotá D.C.

Quintana

Reyes

2012

Rev. ing. constr.

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ResumenEl artículo presenta el cambio que experimenta el módulo resiliente, la deformación permanente y la resistencia a fatiga de una mezcla de concreto asfáltico cuando es expuesta a las condiciones climáticas de la ciudad de Bogotá D.C. (Colombia) durante 47-48 meses. Las mezclas fueron fabricadas utilizando dos cementos asfálticos (CA) fabricados en Colombia: CA 80-100 y CA 60-70. La tendencia general de las mezclas con el tiempo de exposición es experimentar un aumento en los valores de rigidez debido principalmente a procesos de endurecimiento por envejecimiento del ligante asfáltico. El aumento en rigidez genera incremento en la resistencia al fenómeno de ahuellamiento y en la vida de fatiga de la mezcla analizada cuando ésta sea utilizada para conformar capas asfálticas gruesas en el pavimento. Con base en la evolución del módulo resiliente con el tiempo de exposición al medio ambiente se propone una ecuación para predecir de manera aproximada el cambio que experimenta la vida a fatiga de la mezcla.Palabras Clave: Módulo resiliente, ley de fatiga, envejecimiento, mezcla asfáltica densa en caliente, cemento asfáltico AbstractThe present paper introduces the evolution of resilient modulus, permanent strain and fatigue life of an asphaltic concrete mixture exposed under weather conditions in Bogota D.C. (Colombia) during 47-48 months. Mixtures were elaborated by using two asphaltic cements (CA) made in Colombia: CA 80-100 and CA 60-70. Mixtures generally tend to increase their stiffness values after an exposure period, mainly due to hardening and ageing processes undergone by asphaltic binder. A stiffness gain leads to increase endurance against rutting phenomenon and fatigue life of the analyzed mixture employed to lay thick asphaltic layers on the pavement. Based on the resilient modulus evolution due to exposure under environmental conditions, an equation is proposed to approximately predict the evolution of fatigue life endured by a mixture.

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State of the Art Report on Ageing Test Methods for Bituminous Pavement Materials

Cited by 268 publications

References 3 publications

Effect of short-term ageing temperature on bitumen properties

Effect of short-term ageing temperature on bitumen properties

Starenje vrućih asfaltnih mješavina

Evaluación de los parámetros mecánicos de una mezcla asfáltica sometida a las condiciones ambientales de la ciudad de Bogotá D.C.

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