Mechanical and Self-Healing Properties of Stone Mastic Asphalt Containing Encapsulated Rejuvenators

Norambuena-Contreras, José; Yalçın, Erkut; Hudson-Griffiths, Robin; García, Álvaro

doi:10.1061/(asce)mt.1943-5533.0002687

Cited by 57 publications

(32 citation statements)

References 23 publications

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“…In this context, Norambuena-Contreras et al [13] proved that the sunflower oil released from the CaAlg capsules significantly increases the self-healing capability of the dense asphalt mixture [14] and Stone Mastic Asphalt [15]. However, when the CaAlg capsules are exposed to high temperatures for long pre-heating periods, they can suffer peroxidation of the encapsulated sunflower oil [13].…”

Section: Chemical and Thermal Properties Of The Bo Capsules And Theirmentioning

confidence: 99%

“…Several authors have successfully synthesized and proven the use of numerous encapsulated rejuvenating agents, such as dense aromatic oil [11], waste cooking oil [12], and sunflower-cooking oil [13] with asphalt self-healing purposes. Encapsulation procedures, such as in-situ polymerization and ionic gelation, have mainly been used to produce core-shell and polynuclear (beads) encapsulated rejuvenators with size ranges of 5-153 µm and 2-7 mm, respectively [11][12][13][14][15][16]. Recently, bio-oil (BO) has been introduced by Zhang et al [17] as a sustainable rejuvenating agent for aged asphalt binder.…”

Section: Introductionmentioning

confidence: 99%

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Microencapsulated Bio-Based Rejuvenators for the Self-Healing of Bituminous Materials

et al. 2020

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Asphalt self-healing by encapsulated rejuvenating agents is considered a revolutionary technology for the autonomic crack-healing of aged asphalt pavements. This paper aims to explore the use of Bio-Oil (BO) obtained from liquefied agricultural biomass waste as a bio-based encapsulated rejuvenating agent for self-healing of bituminous materials. Novel BO capsules were synthesized using two simple dripping methods through dropping funnel and syringe pump devices, where the BO agent was microencapsulated by external ionic gelation in a biopolymer matrix of sodium alginate. Size, surface aspect, and elemental composition of the BO capsules were characterized by optical and scanning electron microscopy and energy-dispersive X-ray spectroscopy. Thermal stability and chemical properties of BO capsules and their components were assessed through thermogravimetric analysis (TGA-DTG) and Fourier-Transform Infrared spectroscopy (FTIR-ATR). The mechanical behavior of the capsules was evaluated by compressive and low-load micro-indentation tests. The self-healing efficiency over time of BO as a rejuvenating agent in cracked bitumen samples was quantified by fluorescence microscopy. Main results showed that the BO capsules presented an adequate morphology for the asphalt self-healing application, with good thermal stability and physical-chemical properties. It was also proven that the BO can diffuse in the bitumen reducing the viscosity and consequently self-healing the open microcracks.

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Section: Chemical and Thermal Properties Of The Bo Capsules And Theirmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microencapsulated Bio-Based Rejuvenators for the Self-Healing of Bituminous Materials

et al. 2020

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“…While these salts have been shown to be economically accessible and effective, they affect the roadside soil, underground and surface water and vegetation integrity [43,44], as well as the long-term structural performance of the road infrastructure and vehicle health [45]. [30,48,53] With respect to the second type of maintenance operation, with the aim to transform roads into more resilient structures through self-healing, recent research efforts have designed and evaluated the use of encapsulated healing agents (oily rejuvenators) [54][55][56] and the effect of resting periods [57]. As it stands, this area is somewhat newer and has undergone less research.…”

Section: Mechanomutable Asphalt Materials For Improving Road Safety Amentioning

confidence: 99%

A Review of the Contribution of Mechanomutable Asphalt Materials Towards Addressing the Upcoming Challenges of Asphalt Pavements

et al. 2020

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In the coming years, asphalt materials will face significant challenges due to the demand for smart multifunctional materials in transportation infrastructures, designed under sustainability criteria. Asphalt pavements will not only have to contribute towards the provision of an adequate surface for the transportation of different types of vehicles, but will need to do so considering the increased loads that they will have to support, as well as the extreme weather conditions resulting from climate change. These pavements will also need the capacity to interact with autonomous vehicles and provide information to the users and maintenance agencies regarding traffic data or performance levels. This paper describes how mechanomutable asphalt materials (MAMs) could enhance the properties of asphalt materials, enabling their use as a solution for smart infrastructures.

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“…Second, the quality of asphalt pavements in South Korea has seen a remarkable improvement since the early 2000s. Stone mastic asphalt (SMA) mixture production and construction techniques were adopted from Germany tailoring specification and construction standards to the conditions in South Korea (e.g., asphalt binder quality improvement, aggregate gradation, plant management, and construction solutions) [2,[4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The newly developed SMA technology provides not only good mechanical performance but also high riding quality confirmed by a survey in which most of the road users affirm to prefer SMA paved road to conventional hot mix asphalt (HMA) mixture and concrete expressway [2,[4][5][6]8]. Therefore, SMA overlay is preferred in South Korea for aged concrete pavement reconstruction/renovation projects with a projection in this direction for the next decade [1,2].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Rheological Models on the Distress Prediction of Composite Pavement

Moon¹,

Falchetto

Park

et al. 2020

Materials

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In this paper, three different rheological models including a newly developed formulation based on the current Christensen Anderson and Marateanu (CAM) model, named sigmoidal CAM model (SCM), are used to estimate the evolution of roughness, rutting, and reflective cracking in a typical composite pavement structure currently widely adopted in South Korea. Three different asphalt mixtures were prepared and dynamic modulus tests were performed. Then, the mechanistic-empirical pavement design guide (MEPDG) was used for predicting the progression of the pavement distress and to estimate the effect of the three different models on such phenomena. It is found that the three different mathematical models provide lower and upper limits for roughness, rutting, and reflective cracking. While the CAM model may not be entirely reliable due to its inability in fitting the data in the high-temperature domain, SCM might result in moderately more conservative pavement design.

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Mechanical and Self-Healing Properties of Stone Mastic Asphalt Containing Encapsulated Rejuvenators

Cited by 57 publications

References 23 publications

Microencapsulated Bio-Based Rejuvenators for the Self-Healing of Bituminous Materials

Microencapsulated Bio-Based Rejuvenators for the Self-Healing of Bituminous Materials

A Review of the Contribution of Mechanomutable Asphalt Materials Towards Addressing the Upcoming Challenges of Asphalt Pavements

Effect of Different Rheological Models on the Distress Prediction of Composite Pavement

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