Characterization of aging effect on rheological properties of asphalt-filler systems

Huang, Shin-Che; Zeng, Ming

doi:10.1080/10298430601135477

Cited by 55 publications

(29 citation statements)

References 4 publications

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“…The authors reported that it was not possible to observe any measurable difference between the effects of the mineral fillers on asphalt aging. However, S.-C. Huang and Zeng (2007) aged asphalt mastics produced with 20 wt% limestone and granite in the PAV for 100-2000 hours at 60 °C, and observed that both mineral fillers reduced the long-term aging effect in the asphalt mastic.…”

Section: Literature Reviewmentioning

confidence: 99%

Evaluation of the fatigue damage behavior of fine aggregate matrices prepared with modified asphalt binders

Ng¹

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ACKNOWLEDGEMENTSPrimeiramente gostaria de agradecer aos meus pais Ng Chi Wai e Jussara Ng pelo apoio durante a minha formação acadêmica e por estarem presente mesmo estando longe. Os senhores sempre deram o devido valor para a nossa educação não medindo esforços para que tivéssemos uma boa formação. Serei eternamente grata pela dedicação de vocês. Amo vocês.Ao meu orientador, professor Adalberto Leandro Faxina, pelo enorme aprendizado durante o doutorado e pela orientação durante o desenvolvimento deste trabalho. Também a sua esposa Marcia Guidini Faxina e seu filho Ettore Guidini Faxina, por me acolherem como parte da família no período em que moramos em Austin, TX e pelos bons momentos que passamos juntos.As agências de fomento CNPq pela bolsa de doutorado (870343/1997-1) e a CAPES pela bolsa de doutorado sanduíche no exterior (BEX: 6394-15-9).Aos professores Glauco Tulio Pessa Fabbri e Verônica Castelo Branco pelas contribuições feitas no meu exame de qualificação.To Dr. Amit Bhasin for the opportunity to work in your research group at the University of Texas at Austin, US. I learned much more than I expected during the period that I worked with you. Thank you so much for your patience and for the opportunity. O processo de trincamento por fadiga ocorre devido ao carregamento dinâmico repetido do tráfego de veículos pesados. Este fenômeno tem o início por meio de microtrincas e se propaga por meio de duas condições: (i) após a ruptura adesiva, quando a trinca ocorre na interface entre agregado e mástique, e/ou (ii) após a ruptura coesiva, quando o processo de trincamento ocorre no mástique. Com base nesta interpretação para o trincamento por fadiga em mistura asfáltica, pesquisadores vêm usando matrizes de agregado fino (MAFs) para estimar o comportamento da mistura asfáltica completa quanto ao dano por fadiga. Boa correlação é observada entre as propriedades da MAF e da mistura asfáltica completa (MAC) em estudos relacionados ao dano por umidade, fadiga e deformação permanente. Com relação a resistência de pavimentos flexíveis, é importante avaliar o efeito do uso de ligantes asfálticos modificados e do envelhecimento do ligante nas propriedades da mistura asfáltica, uma vez que ligantes modificados podem melhorar o comportamento da mistura asfáltica quanto ao dano por fadiga, e o envelhecimento do ligante asfáltico pode enrijecer o material tornando-o mais frágil, reduzindo a vida de fadiga das misturas asfálticas. Levando em consideração as evidências apresentadas, este estudo tem por objetivo avaliar o efeito de ligantes asfálticos modificados e o nível de envelhecimento na vida de fadiga das MAFs, mástiques e ligantes asfálticos. Estas três escalas da mistura asfáltica completa foram compostas por quatro ligantes asfálticos (CAP 50/70, CAP+PPA, CAP+SBS e CAP+borracha) envelhecidos a curto e a longo prazo. As propriedades das três escalas quanto ao dano por fadiga foram avaliadas por meio dos conceitos da teoria do dano contínuo em meio viscoelástico (VECD), uma vez que esta teoria é capaz de prever o com...

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Section: Literature Reviewmentioning

confidence: 99%

Evaluation of the fatigue damage behavior of fine aggregate matrices prepared with modified asphalt binders

Ng¹

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“…In contrast, some others sustain that the mechanical spectrum of many modified bituminous products can be represented, reasonably well, by master curves of their linear viscoelastic material functions [30]. Anyway, the TTSP has been widely applied to both neat and polymer-modified bitumens, and synthetic binders [3,6,9,31,32], as well as asphalt mastics [33,34].…”

Section: Linear Viscoelasticity Of Modified Bituminous Masticsmentioning

confidence: 99%

Rheological behaviour of polymer-modified bituminous mastics: A comparative analysis between physical and chemical modification

Shivokhin

García‐Morales

Partal

et al. 2012

Construction and Building Materials

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Mastic, a bitumen/filler blend which naturally forms when bitumen is mixed with aggregates is the actual product used to bind coarse mineral particles in the asphalt mixtures. As a result, the characterisation of mastics is essential to improve the understanding of the response and performance of asphalt concrete pavements. On the other hand, the lack of experimental data concerning the behaviour of mastics and, above all, polymer-modified mastics has been lately claimed. In that sense, this work presents a comparative analysis between the effect that "physical" and "chemical" modification by polymers exert on mastics prepared by blending modified binders with different contents of calcium carbonate, ranging from 65 to 80 wt.%. Tri-block copolymer SBS and a "reactive" isocyanate-based prepolymer were used as modifying agents in the preparation of the binders. Linear viscoelasticy tests revealed that polymer type exerts, at high temperatures, a significant influence on the binder contribution to the overall rheological properties of the resulting mastic.

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“…Huang et al [4] studied the rheological properties of unaged and aged asphalt-filler mixes and reported that the rheological properties of bitumen depend upon aging and temperatures, and both can be characterized separately with the help of different models. Moreover, an increase in aging level corresponds to a decrease in temperature.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Complex modulus (G*) and phase angle (δ) are considered to be the principal rheological parameters, normally measured from a device known as Dynamic Shear Rheometer (DSR) [4]. The complex modulus is the peak-to-peak shear stress to absolute value of peak-to-peak shear strain and the phase angle is the angle in radian between a simultaneously applied stress and the resulting sinusoidal stress in a controlled strain testing mode [5].…”

Section: Literature Reviewmentioning

confidence: 99%

A rheological comparison of hard grade binders with polymer modified bitumen under aged and unaged conditions

Hafeez

Kamal

2009

Computational Methods and Experiments in Materials Characterisation IV

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High ambient temperature and uncontrolled heavy axle loads are considered to be the root cause of premature failure of flexible pavements, especially rutting, in Pakistan. In order to combat rutting problems, 60/70 penetration grade bitumen modified with Elvaloy Terpolymer (PMB) has been used on various critical sections since 2001. Rheological characteristics of PMB, 60/70 and 40/50 penetration grade bitumen were studied using a dynamic shear rheometer at 25, 40 and 55 0 C. Short term aging effects were also studied in a rolling thin film oven test and the results of aged and unaged binders have been compared. The study revealed that the complex shear modulus of binders reduces significantly with an increase in temperature, while the phase angle increases, but at a lesser rate. Short term aging has showed relatively less influence on binder rheology than temperature.

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Characterization of aging effect on rheological properties of asphalt-filler systems

Cited by 55 publications

References 4 publications

Evaluation of the fatigue damage behavior of fine aggregate matrices prepared with modified asphalt binders

Evaluation of the fatigue damage behavior of fine aggregate matrices prepared with modified asphalt binders

Rheological behaviour of polymer-modified bituminous mastics: A comparative analysis between physical and chemical modification

A rheological comparison of hard grade binders with polymer modified bitumen under aged and unaged conditions

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