The Influence of Ageing on the Fatigue and Healing Properties of Bituminous Mortars

Bergh, Wim van den; Ven, M.F.C. Van de

doi:10.1016/j.sbspro.2012.09.878

Cited by 70 publications

(50 citation statements)

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“…During the ageing, the mixture was stirred three times, on days 2, 4 and 5, with a time interval between agitations greater than 24 hours. Although the RILEM recommendations establish 9 days, De La Roche, et al (10) concluded that the results of 7 days of ageing were good enough (19). Furthermore, it seemed that the ageing procedure established by the RILEM committee led to a greater ageing of bitumen compared with classical bitumen ageing tests.…”

Section: Experimental Studymentioning

confidence: 99%

Ageing and temperature effect on the fatigue performance of bituminous mixtures

López-Montero

Recasens

2017

Mater. construcc.

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ABSTRACT:The ageing of asphalt mixes, together with their exposure to low temperatures, causes a progressive increase of cracking. In this paper, the effect of ageing and temperature on the fatigue of asphalt concretes made with two types of binders, conventional (50/70) and polymer modified bitumen (PMB), is studied. For this purpose, specimens previously subjected to an accelerated laboratory ageing process were tested by a strain sweep test at different temperatures (-5ºC, 5ºC and 20°C). Results were compared with the obtained from the unaged specimens showing the relative importance of ageing, temperature and type of bitumen on the parameters that determine the fatigue life of the mixture. The mixtures behaviour becomes more brittle with ageing and the decrease of temperature. However, ageing hardly has an effect on fatigue at lower temperatures. In general, mixtures made with polymer modified bitumen have a better fatigue performance to ageing and temperature. RESUMEN: Efecto del envejecimiento y de la temperatura en el comportamiento a fatiga de las mezclas bituminosas.el envejecimiento de las mezclas, unido a su exposición a bajas temperaturas, provoca un progresivo aumento de su fisuración. En este trabajo, se estudia el efecto del envejecimiento y la temperatura en la fatiga de una mezcla semidensa fabricada con dos tipos de ligantes, 50/70 y PMB 45/80-65. Para ello, probetas previamente sometidas a envejecimiento acelerado en laboratorio fueron ensayadas mediante un ensayo de barrido de deformaciones, a diferentes temperaturas (-5, 5 y 20ºC). Los resultados fueron comparados con los obtenidos en mezclas no envejecidas mostrando la importancia del envejecimiento, temperatura y ligante sobre los parámetros que condicionan la vida a fatiga de la mezcla. El comportamiento de las mezclas es más frágil debido al envejecimiento y la disminución de la temperatura. Sin embargo, el envejecimiento apenas influye en la fatiga a temperaturas bajas. En general, las mezclas con betún modificado muestran mejor respuesta a fatiga frente a envejecimiento y temperatura.

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Section: Experimental Studymentioning

confidence: 99%

Ageing and temperature effect on the fatigue performance of bituminous mixtures

López-Montero

Recasens

2017

Mater. construcc.

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“…64 Hardening due to ageing is the result of several processes that occur during the life of 65 asphalt mixtures [3] and can be attributed to chemical ageing and physical ageing or 66 steric hardening [4,5]. 67 Physical ageing is a reversible process that consists of a re-orientation of the molecules 68 in the bitumen structure, combined with the slow crystallization of waxes at room 69 temperature [6]. This process results in increased viscosity (without chemical 70 modification) of the bitumen components.…”

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confidence: 99%

Effect of ageing and temperature on the fatigue behaviour of bitumens

et al. 2015

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“…Thus, there exists a need for lab-manufactured RAP in order to provide a homogeneous material for testing (El Béze 2008;Navaro 2011). El Béze et al (2012 and Van den bergh and Van de Ven (2012) fabricated RAP mastic (bitumen + sand).…”

Section: Methodsmentioning

confidence: 99%

“…Rejuvenating agents: There have been several types of recycling agents used with RAP. Some examples include lubricating and extender oils, which contain high proportions of maltenes [Terrel and Epps (1989) cited by Al-Qadi et al (2007)]. The compatibility of the agent with bitumen can be an issue.…”

Section: Methodsmentioning

confidence: 99%

“…The resulting characteristics include a decrease in penetration, increase in softening point, increase in viscosity, decrease in ductility, cohesion, and adhesion of aggregates and bitumen, along with a decrease in thermal resistance for asphalt (Al-Qadi et al 2007). The capacity of the asphalt to heal itself is also decreased (Van den bergh and Van de Ven 2012). In addition to these negative effects, the rutting and fatigue resistance are sometimes increased due to the bitumen becoming harder, although this is not always the case, and the performance can also be equal or worse in these two parameters compared with asphalt without RAP addition.…”

Section: Introductionmentioning

confidence: 99%

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Methods for Analyzing the Chemical Mechanisms of Bitumen Aging and Rejuvenation with FTIR Spectrometry

2015

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The recycling of asphalt is a process where old pavement is broken up and used as reclaimed asphalt pavement (RAP) in new asphalt pavement, often with the aid of recycling agents. The goal of asphalt recycling agents is to reintroduce the properties lost in bitumen and asphalt during aging such as penetration, softening point, viscosity, ductility, cohesion and adhesion to aggregate, reducing the performance of asphalt and requiring its replacement. The purpose of this study is to observe the chemistry of bitumen aging and the effects of recycling agents may have in reversing it. Fourier transform infrared spectroscopy (FTIR)-attenuated total reflectance (ATR) was used to analyse the bitumen aging and regeneration in terms of the evolution of carbonyl, sulfoxide and other bands. FTIR-ATR microscopy was used to study the distribution of these bands between the aggregates in order to understand the remobilization of the old asphalt (RAP) by the recycling agents through observing their penetration into the RAP. A method for aging bitumen and mastic in a ventilated oven was developed. An increase in C=O and S=O indices was observed with aging, plateauing after 7d.

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The Influence of Ageing on the Fatigue and Healing Properties of Bituminous Mortars

Cited by 70 publications

References 0 publications

Ageing and temperature effect on the fatigue performance of bituminous mixtures

Ageing and temperature effect on the fatigue performance of bituminous mixtures

Effect of ageing and temperature on the fatigue behaviour of bitumens

Methods for Analyzing the Chemical Mechanisms of Bitumen Aging and Rejuvenation with FTIR Spectrometry

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