Effectiveness of Seal Rejuvenators for Bituminous Pavement Surfaces

Mitchell, Dmr; Chiu, C-T; Mg, Lee

doi:10.1520/jte100056

Cited by 17 publications

(3 citation statements)

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“…It has been claimed in previous research that rejuvenators on pavement surfaces increase pavement life expectancy by many years. However, it has been shown that the rejuvenators did not cure pavement fractures at deeper depths and only acted up to a few millimetres below the surface [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Self-Healing Evaluation of Asphalt Concrete Containing Encapsulated Rejuvenator

et al. 2022

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Ultraviolet radiation, oxidation, temperature, moisture, and traffic loads produce degradation and brittleness in the asphalt pavement. Microcracks develop into macrocracks, which eventually lead to pavement failure. Although asphalt has an inherent capacity for self-healing, it is constricted. As a result, damages build beyond the ability of asphalt to repair themselves. This research employs the in-situ crack healing method of encapsulated rejuvenator technology to enhance the insufficient self-healing capability of roads. This allows the extrinsically induced healing in asphalt to assist it in recovering from damage sustained during service life. Optical microscopy, thermogravimetric analysis, and the compressive load test of capsules were done to characterise their properties. We measured the self-healing behaviour of encapsulated rejuvenator-induced asphalt utilising the three-point bending beam tests on unaged, short-term aged and long-term aged asphalt beams. The rate of oil release before and after healing was quantified using Fourier transform infrared spectroscopy. The results of these tests were utilised to explain the link between healing time, temperature, asphalt ageing, and healing level. Overall, it was determined that the encapsulated rejuvenator was acceptable for mending asphalt mixes because it increased healing temperature and duration, resulting in an up to 80% healing index.

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Section: Introductionmentioning

confidence: 99%

Comprehensive Self-Healing Evaluation of Asphalt Concrete Containing Encapsulated Rejuvenator

et al. 2022

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“…More recently, rejuvenators have also been used for asphalt mixtures containing large percentages of reclaimed asphalt pavement, since they can reduce the performance grade of the bitumen to the level of the virgin asphalt binder [26]. Rejuvenators are effective when, spread over the road surface, they fully penetrate into the pavement, not accumulating only in the first centimetres [27]. Encapsulation is a promising way to solve this problem.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterisation and mechanical impact of novel capsules using porous aggregates containing asphalt rejuvenator as an effective way to restore aged binder properties

Casado

Lastra-González

Perez

2021

International Journal of Pavement Engineering

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“…However, the use of rejuvenators presents a challenge as it is difficult to penetrate into the asphalt layer, which is necessary to rejuvenate the mix [12]. Therefore, encapsulation methods have been studied as an alternative in order to incorporate the use of rejuvenators into the mix during production [13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Asphalt Binder Containing Microcapsules

Onsori¹,

Şengöz²,

Topal³

et al. 2021

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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Asphalt pavements are exposed to traffic loading and adverse environmental effects such as rain and oxidation which result in decreasing their relaxation capabilities and the initiation of cracks. Recent research highlights the importance of developing long life pavements. One of the possible ways is to utilize innovative maintenance techniques such as self-healing technologies in order to reverse the aging process in asphalt binder. So as to achieve this goal, self-healing microcapsules seems to be an effective way to autonomously repair the micro-cracks, restore original mechanical properties, then further slow fatigue cracks growth and increase the fatigue life of the pavement. In this study urea formaldehyde (UF) self-healing microcapsule were prepared by in-situ polymerization method. Following the characterization of microcapsules, different amount of microcapsules (6, 8, 9 ,10, 11 and 12%) were added into bitumen. Rheological properties of the samples have been determined by means of Dynamic Shear Rheometer. Ductility test was also employed to characterize the mechanical properties of the bitumen samples. Based on results the produced microcapsules can endure high temperatures, which indicate that these microcapsules can resist the thermal influence of bitumen in application. Besides, bitumen samples involving microcapsules exhibit satisfactory results in terms of complex modulus (G*) and bitumen recovery tests. The recovery value of the modulus increased first and then decreased with the amount of microcapsules. Microcapsules containing rejuvenator will be a promising product to realize the smart pavements.

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Effectiveness of Seal Rejuvenators for Bituminous Pavement Surfaces

Cited by 17 publications

References 0 publications

Comprehensive Self-Healing Evaluation of Asphalt Concrete Containing Encapsulated Rejuvenator

Comprehensive Self-Healing Evaluation of Asphalt Concrete Containing Encapsulated Rejuvenator

Synthesis, characterisation and mechanical impact of novel capsules using porous aggregates containing asphalt rejuvenator as an effective way to restore aged binder properties

Characterization of Asphalt Binder Containing Microcapsules

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