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Amir Tabaković
Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands

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Journal article
Published: 03 August 2021 in Processes
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This paper explores the potential use of conductive alginate capsules encapsulating a bitumen rejuvenator as a new extrinsic self-healing asphalt method. The capsules combine two existing self-healing asphalt technologies: (1) rejuvenator encapsulation and (2) induction heating to create a self-healing system that will provide rapid and effective asphalt pavement repair. The work presents a proof of concept for the encapsulation process, which involves embedding the capsules into the bitumen mortar mixture and the survival rate of the capsules in the asphalt mixture. A drip capsule production process was adopted and scaled up to the production of 20l wet capsules at rate of 0.22 l/min. To prove the effectiveness and its ability to survive asphalt production process, the capsules were prepared and subjected to thermogravimetric analysis (TGA) and uniaxial compression Test (UCT). The test results demonstrated that the capsules had suitable thermal characteristics and mechanical strength to survive the asphalt mixing and compaction process. Scanning electron microscopy (SEM) was employed to investigate physiological properties, such as rejuvenator (oil) and iron particle distribution, within the capsules. The electrical resistance tests proved that the capsules were capable of conducting electrical current. The capsules were also tested for their conductive properties in order to determine whether they are capable of conducting and distributing the heat once subjected to induction heating. The results showed that capsules containing higher amounts of iron (alginate/iron powder in a ratio of 20:80 by weight) can efficiently conduct and distribute heat. To prove its success as an asphalt healing system, conductive alginate capsules encapsulating a bitumen rejuvenator were embedded in a bitumen mortar mix. The samples where then subjected to local damaging and healing events, and the degree of healing was quantified. The research findings indicate that conductive alginate capsules encapsulating a bitumen rejuvenator present a promising new approach for the development of an extrinsic self-healing asphalt pavement systems.

ACS Style

Amir Tabaković; Joseph Mohan; Aleksandar Karač. Conductive Compartmented Capsules Encapsulating a Bitumen Rejuvenator. Processes 2021, 9, 1361 .

AMA Style

Amir Tabaković, Joseph Mohan, Aleksandar Karač. Conductive Compartmented Capsules Encapsulating a Bitumen Rejuvenator. Processes. 2021; 9 (8):1361.

Chicago/Turabian Style

Amir Tabaković; Joseph Mohan; Aleksandar Karač. 2021. "Conductive Compartmented Capsules Encapsulating a Bitumen Rejuvenator." Processes 9, no. 8: 1361.

Journal article
Published: 20 June 2021 in Materials
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Self-healing asphalt, which is designed to achieve autonomic damage repair in asphalt pavement, offers a great life-extension prospect and therefore not only reduces pavement maintenance costs but also saves energy and reduces CO2 emissions. The combined asphalt self-healing system, incorporating both encapsulated rejuvenator and induction heating, can heal cracks with melted binder and aged binder rejuvenation, and the synergistic effect of the two technologies shows significant advantages in healing efficiency over the single self-healing method. This study explores the fatigue life extension prospect of the combined healing system in porous asphalt. To this aim, porous asphalt (PA) test specimens with various healing systems were prepared, including: (i) the capsule healing system, (ii) the induction healing system, (iii) the combined healing system and (iv) a reference system (without extrinsic healing). The fatigue properties of the PA samples were characterized by an indirect tensile fatigue test and a four-point bending fatigue test. Additionally, a 24-h rest period was designed to activate the built-in self-healing system(s) in the PA. Finally, a damaging and healing programme was employed to evaluate the fatigue damage healing efficiency of these systems. The results indicate that all these self-healing systems can extend the fatigue life of porous asphalt, while in the combined healing system, the gradual healing effect of the released rejuvenator from the capsules may contribute to a better induction healing effect in the damaging and healing cycles.

ACS Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. Experimental Investigation of the Performance of a Hybrid Self-Healing System in Porous Asphalt under Fatigue Loadings. Materials 2021, 14, 3415 .

AMA Style

Shi Xu, Xueyan Liu, Amir Tabaković, Erik Schlangen. Experimental Investigation of the Performance of a Hybrid Self-Healing System in Porous Asphalt under Fatigue Loadings. Materials. 2021; 14 (12):3415.

Chicago/Turabian Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. 2021. "Experimental Investigation of the Performance of a Hybrid Self-Healing System in Porous Asphalt under Fatigue Loadings." Materials 14, no. 12: 3415.

Journal article
Published: 11 March 2021 in Processes
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Microwave heating has been shown to be an effective method of heating asphalt concrete and in turn healing the damage. As such, microwave heating holds great potential in rapid (1–3 min) and effective damage healing, resulting in improvement in the service life, safety, and sustainability of asphalt pavement. This study focused on the microwave healing effect on porous asphalt concrete. Steel wool fibres were incorporated into porous asphalt to improve the microwave heating efficiency, and the optimum microwave heating time was determined. Afterwards, the microwave healing efficiency was evaluated using a semi–circular bending and healing programme. The results show that the microwave healing effect is largely determined by the steel fibre content and the mix design of the porous asphalt concrete.. Besides, the uneven heating effect of microwave contributes to an unstable damage recovery in the asphalt mixture, which makes it less efficient than induction heating. However, microwaves exhibited the ability to penetrate further into the depth of the test specimen and heat beneath the surface, indicating deeper damage recovery prospects.

ACS Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. The Prospect of Microwave Heating: Towards a Faster and Deeper Crack Healing in Asphalt Pavement. Processes 2021, 9, 507 .

AMA Style

Shi Xu, Xueyan Liu, Amir Tabaković, Erik Schlangen. The Prospect of Microwave Heating: Towards a Faster and Deeper Crack Healing in Asphalt Pavement. Processes. 2021; 9 (3):507.

Chicago/Turabian Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. 2021. "The Prospect of Microwave Heating: Towards a Faster and Deeper Crack Healing in Asphalt Pavement." Processes 9, no. 3: 507.

Editorial
Published: 03 December 2020 in Applied Sciences
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The global road network spans 16

ACS Style

Amir Tabaković. Bio-Binder—Innovative Asphalt Technology. Applied Sciences 2020, 10, 8655 .

AMA Style

Amir Tabaković. Bio-Binder—Innovative Asphalt Technology. Applied Sciences. 2020; 10 (23):8655.

Chicago/Turabian Style

Amir Tabaković. 2020. "Bio-Binder—Innovative Asphalt Technology." Applied Sciences 10, no. 23: 8655.

Conference paper
Published: 20 June 2020 in Lecture Notes in Civil Engineering
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This paper presents a unique self-healing system for asphalt pavement which employs compartmented calcium-alginate fibres encapsulating an asphalt binder healing agent (rejuvenator). This system presents a novel method of incorporating rejuvenators into asphalt pavement mixtures. The compartmented fibres are used to distribute the rejuvenator throughout the pavement mixture, thereby overcoming some of the problems associated with alternate asphalt pavement healing methods, i.e., spherical capsules and hollow fibres. The healing system performance, when embedded in Porous Asphalt (PA) mix was tested by employing: (i) Indirect Tensile Stiffness and Strength test (ii) 4 Point Bending Fatigue test. The Semi Circular Bend (SCB) test was adopted to study crack propagation and its closure (healing) in an asphalt mix. The findings demonstrate that compartmented alginate fibres have capacity to survive asphalt mixing and compaction process. The fibres can efficiently repair damage (close the cracks), increase asphalt mix stiffness and strength. However, when the asphalt mix is subjected to fatigue loading the system does not significantly improve healing properties of the asphalt mix. Nevertheless, the findings indicate that, with further enhancement, compartmented calcium alginate fibres may present a promising new approach for the development of self-healing asphalt pavement systems.

ACS Style

A. Tabaković; E. Schlangen. Self-healing Asphalt for Road Pavements. Lecture Notes in Civil Engineering 2020, 307 -317.

AMA Style

A. Tabaković, E. Schlangen. Self-healing Asphalt for Road Pavements. Lecture Notes in Civil Engineering. 2020; ():307-317.

Chicago/Turabian Style

A. Tabaković; E. Schlangen. 2020. "Self-healing Asphalt for Road Pavements." Lecture Notes in Civil Engineering , no. : 307-317.

Journal article
Published: 03 March 2020 in Journal of Cleaner Production
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Self-healing asphalt, aimed to produce a sustainable asphalt pavement using green technology, has been studied in the past two decades. Technologies including encapsulated rejuvenator and induction heating have been proposed, demonstrated in the laboratory, and gradually evaluated in field application. This paper looks into the synergy effect of the above two technologies, where induction heating serves as the asphalt damage repair mechanism, requiring just 2 min heating time and encapsulated rejuvenator will replenish (rejuvenate) aged asphalt binder and reinstate bitumen’s healing ability. Moreover, the increased temperature from induction heating could in turn accelerate the diffusion process of rejuvenator into aged bitumen. In this paper, the healing efficiency of the combined healing system was tested in comparison with autonomous asphalt healing system, induction healing system and capsule healing system. Porous asphalt concrete with various healing systems were prepared and a laboratory ageing procedure was followed to simulate the condition when healing was needed (after years of serving). X-ray computed tomography was employed to visualize the material composition and distribution inside of each healing systems. The properties of binder extracted from the porous asphalt samples were examined by dynamic shear rheometer. Indirect tensile strength and indirect tensile stiffness modulus tests were employed to characterize the mechanical properties of the porous asphalt samples with various healing systems. Finally, the cracking resistance of these healing systems was investigated by semi-circular bending test, and the healing efficiency was evaluated using a bending and healing programme. The results indicated that the combined healing system, with synergistic effects of aged binder rejuvenation and crack healing, shows a longer life extension prospect over the other healing systems.

ACS Style

S. Xu; X. Liu; A. Tabaković; Erik Schlangen. A novel self-healing system: Towards a sustainable porous asphalt. Journal of Cleaner Production 2020, 259, 120815 .

AMA Style

S. Xu, X. Liu, A. Tabaković, Erik Schlangen. A novel self-healing system: Towards a sustainable porous asphalt. Journal of Cleaner Production. 2020; 259 ():120815.

Chicago/Turabian Style

S. Xu; X. Liu; A. Tabaković; Erik Schlangen. 2020. "A novel self-healing system: Towards a sustainable porous asphalt." Journal of Cleaner Production 259, no. : 120815.

Journal article
Published: 22 August 2019 in Construction and Building Materials
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Self-healing within asphalt pavements is the process whereby road cracks can be repaired automatically when thermal and mechanical conditions are met. To accelerate and improve this healing process, metal particles are added to asphalt mixtures. However, this approach is costly both in economic and environmental terms due to the use of virgin metallic particles. So, even though the self-healing of asphalt mixtures has been widely addressed in experimental terms over the years, there is a lack of research aimed at modelling this phenomenon, especially with the purpose of optimizing the use of metal particles through the valorization of industrial by-products. As such, the goal of this study was to develop a statistical methodology to model the healing capacity of asphalt concrete mixtures (AC-16) from the characteristics of the metal particles added and the time and intensity used for magnetic induction. Five metal particles were used as heating inductors, including four types of industrial by-products aimed at transforming waste products into material for use in the road sector. The proposed approach consisted of a combination of cluster algorithms, multiple regression analysis and response optimization, which were applied to model laboratory data obtained after testing asphalt concrete mixtures containing these inductors. The results proved the accuracy of the statistical methods used to reproduce the experimental behaviour of the asphalt mixtures, which enabled the authors to determine the optimal amount of industrial by-products and time needed to make the self-healing process as efficient as possible.

ACS Style

Marta Vila-Cortavitarte; Daniel Jato-Espino; Amir Tabakovic; Daniel Castro-Fresno. Optimizing the valorization of industrial by-products for the induction healing of asphalt mixtures. Construction and Building Materials 2019, 228, 116715 .

AMA Style

Marta Vila-Cortavitarte, Daniel Jato-Espino, Amir Tabakovic, Daniel Castro-Fresno. Optimizing the valorization of industrial by-products for the induction healing of asphalt mixtures. Construction and Building Materials. 2019; 228 ():116715.

Chicago/Turabian Style

Marta Vila-Cortavitarte; Daniel Jato-Espino; Amir Tabakovic; Daniel Castro-Fresno. 2019. "Optimizing the valorization of industrial by-products for the induction healing of asphalt mixtures." Construction and Building Materials 228, no. : 116715.

Short communication
Published: 06 March 2019 in Case Studies in Construction Materials
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A problem increasingly faced by airport authorities is the maintenance of runways. Due to their large aircraft loadings associated with take-off and landing operations, runways experience surface deterioration. Poor quality runway surfaces cannot be tolerated in such an environment. Maintenance issues must be carried out to maximise safety and minimise the risk of aircraft damage. A recent development has been the introduction of self-healing technologies such as rejuvenator encapsulation, induction and microwave heating to address these issues. This paper summarises a laboratory investigation to determine the effectiveness of microwave self-healing for crack repair of Porous Friction Course (PFC) used for airfields. Four mixtures containing varying percentages of conductive steel fibre were tested. Their relative performance was assessed using the Indirect Tensile Stiffness Modulus (ITSM) and Indirect Tensile Strength (ITS) test methods. The results show that the addition of conductive steel fibre increases initial stiffness and strength of the mix. A combination of micro-wave heating and steel fibre addition to the mix indicates that it is possible to significantly improve asphalt performance by making it self-healing to structural problems such as cracking.

ACS Style

Amir Tabaković; Declan O’Prey; Drew McKenna; David Woodward. Microwave self-healing technology as airfield porous asphalt friction course repair and maintenance system. Case Studies in Construction Materials 2019, 10, e00233 .

AMA Style

Amir Tabaković, Declan O’Prey, Drew McKenna, David Woodward. Microwave self-healing technology as airfield porous asphalt friction course repair and maintenance system. Case Studies in Construction Materials. 2019; 10 ():e00233.

Chicago/Turabian Style

Amir Tabaković; Declan O’Prey; Drew McKenna; David Woodward. 2019. "Microwave self-healing technology as airfield porous asphalt friction course repair and maintenance system." Case Studies in Construction Materials 10, no. : e00233.

Journal article
Published: 18 February 2019 in RILEM Technical Letters
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Induction healing is a proven technology which is able to improve the self-healing capacity of asphalt concrete. Healing is achieved via electromagnetic current produced by passing induction machine, where steel asphalt constituents heat up which in turn soften the bitumen in the asphalt layer, allowing it to flow and close cracks, repairing the damage. This paper reports on the study which investigated the influence of ageing on the healing capacity of Porous Asphalt (PA) concrete. Porous Asphalt concrete mix was prepared first, then subjected to an accelerated (laboratory) ageing process using a ventilated oven. In order to further evaluate the induction healing efficiency of asphalt concrete, Semi-circular bending (SCB) and healing cycles were performed on asphalt concrete specimens. The results show that with an increase of the ageing level of porous asphalt concrete, the induction healing efficiency decreases.

ACS Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. The influence of asphalt ageing on induction healing effect on porous asphalt concrete. RILEM Technical Letters 2019, 3, 98 -103.

AMA Style

Shi Xu, Xueyan Liu, Amir Tabaković, Erik Schlangen. The influence of asphalt ageing on induction healing effect on porous asphalt concrete. RILEM Technical Letters. 2019; 3 ():98-103.

Chicago/Turabian Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. 2019. "The influence of asphalt ageing on induction healing effect on porous asphalt concrete." RILEM Technical Letters 3, no. : 98-103.

Journal article
Published: 30 January 2019 in Applied Sciences
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It has been demonstrated that calcium alginate capsules can be used as an asphalt healing system by pre-placing rejuvenator (healing agent) into the asphalt mix and releasing the rejuvenator on demand (upon cracking). This healing mechanism relies on the properties of capsules which are determined by the capsule preparation process. In this study, to optimize the calcium alginate capsules, capsules are prepared using varying Alginate/Rejuvenator (A/R) ratios. Light microscope microscopy and Environmental Scanning Electron Microscope (ESEM) are employed to characterize the morphology and microstructure of these capsules. Thermal stability and mechanical property are investigated by thermogravimetric analysis (TGA) and compressive tests. The testing results indicate that higher alginate content results in smaller diameter and lower thermal resistance, but higher compressive strength. The optimum A/R ratio of calcium alginate capsules is found to be 30/70. To prove the effectiveness of the optimized capsules, the capsules are embedded in asphalt mortar beams and a bending and healing program is carried out. The effect of capsule shell material on the mechanical response of asphalt mixture is evaluated through three-point bending on the mortar beams embedded with blank capsules (without the healing agent). Aged mortar beams containing alginate capsules encapsulating rejuvenator demonstrate a higher strength recovery after bending tests, which indicates effective healing due to the release of the rejuvenators from the capsules.

ACS Style

Shi Xu; Amir Tabaković; Xueyan Liu; Damian Palin; Erik Schlangen. Optimization of the Calcium Alginate Capsules for Self-Healing Asphalt. Applied Sciences 2019, 9, 468 .

AMA Style

Shi Xu, Amir Tabaković, Xueyan Liu, Damian Palin, Erik Schlangen. Optimization of the Calcium Alginate Capsules for Self-Healing Asphalt. Applied Sciences. 2019; 9 (3):468.

Chicago/Turabian Style

Shi Xu; Amir Tabaković; Xueyan Liu; Damian Palin; Erik Schlangen. 2019. "Optimization of the Calcium Alginate Capsules for Self-Healing Asphalt." Applied Sciences 9, no. 3: 468.

Journal article
Published: 07 January 2019 in Materials
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Improving the healing capacity of asphalt is proving to be an effective method to prolong the service life of an asphalt pavement. The calcium alginate capsules encapsulating rejuvenator have been developed and proved to provide successful localized crack healing in asphalt mastic. However, it is not known whether this self-healing asphalt system will improve healing capacity of a full asphalt mix. To this aim, this paper reports on study which investigate effect of the calcium alginate capsules onto self-healing capacity of the porous asphalt mix. X-ray computed tomography (XCT) was used to visualize the distribution of the capsules in porous asphalt. The effect of the capsules on fracture resistance of porous asphalt concrete was studied by semi-circular bending (SCB) tests. A semi-circular bending and healing programme was carried out to evaluate the healing effect of these capsules in porous asphalt concrete. Indirect Tensile Stiffness Modulus (ITSM) tests were employed in order to investigate the influence of the capsules on the stiffness of the porous asphalt concrete. The results indicate that incorporating calcium alginate capsules significantly improve the healing capacity of porous asphalt concrete without compromising its performance.

ACS Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. Investigation of the Potential Use of Calcium Alginate Capsules for Self-Healing in Porous Asphalt Concrete. Materials 2019, 12, 168 .

AMA Style

Shi Xu, Xueyan Liu, Amir Tabaković, Erik Schlangen. Investigation of the Potential Use of Calcium Alginate Capsules for Self-Healing in Porous Asphalt Concrete. Materials. 2019; 12 (1):168.

Chicago/Turabian Style

Shi Xu; Xueyan Liu; Amir Tabaković; Erik Schlangen. 2019. "Investigation of the Potential Use of Calcium Alginate Capsules for Self-Healing in Porous Asphalt Concrete." Materials 12, no. 1: 168.

Review
Published: 18 July 2018 in Advanced Materials Interfaces
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In recent decades, researchers have revealed the great healing potential of asphalt and proposed various novel methods to inspire and improve the self‐healing capacity of asphalt aimed to prolong the service life of asphalt pavement. In this review, up to date research progresses in induction healing and embedded rejuvenator encapsulation are presented, respectively. Meanwhile, the trial section applications of induction healing and capsule healing are highlighted, which show promising results. Finally, some recommendations for the future development of self‐healing asphalt are proposed.

ACS Style

Shi Xu; Alvaro García; Junfeng Su; Quantao Liu; Amir Tabaković; Erik Schlangen. Self-Healing Asphalt Review: From Idea to Practice. Advanced Materials Interfaces 2018, 5, 1 .

AMA Style

Shi Xu, Alvaro García, Junfeng Su, Quantao Liu, Amir Tabaković, Erik Schlangen. Self-Healing Asphalt Review: From Idea to Practice. Advanced Materials Interfaces. 2018; 5 (17):1.

Chicago/Turabian Style

Shi Xu; Alvaro García; Junfeng Su; Quantao Liu; Amir Tabaković; Erik Schlangen. 2018. "Self-Healing Asphalt Review: From Idea to Practice." Advanced Materials Interfaces 5, no. 17: 1.

Journal article
Published: 01 April 2018 in Construction and Building Materials
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ACS Style

Shi Xu; A. Tabaković; X. Liu; Erik Schlangen. Calcium alginate capsules encapsulating rejuvenator as healing system for asphalt mastic. Construction and Building Materials 2018, 169, 379 -387.

AMA Style

Shi Xu, A. Tabaković, X. Liu, Erik Schlangen. Calcium alginate capsules encapsulating rejuvenator as healing system for asphalt mastic. Construction and Building Materials. 2018; 169 ():379-387.

Chicago/Turabian Style

Shi Xu; A. Tabaković; X. Liu; Erik Schlangen. 2018. "Calcium alginate capsules encapsulating rejuvenator as healing system for asphalt mastic." Construction and Building Materials 169, no. : 379-387.

Journal article
Published: 01 August 2017 in Journal of Traffic and Transportation Engineering (English Edition)
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This article presents development of a novel self-healing technology for asphalt pavements, where asphalt binder rejuvenator is encapsulated within the compartmented alginate fibres. The key objective of the study was to optimise the compartmented alginate fibre design, i.e., maximising amount of rejuvenator encapsulated within the fibre. The results demonstrate that optimum rejuvenator content in the alginate fibre is of 70:30 rejuvenator/alginate ratio. The fibres are of sufficient thermal and mechanical strength to survive harsh asphalt mixing and compaction processes. Furthermore, results illustrate that zeer open asfalt beton (ZOAB) asphalt mix containing 5% of 70:30 rejuvenator/alginate ratio compartmented alginate fibres has higher strength, stiffness and better healing properties in comparison to the control asphalt mix, i.e., mix without fibres, and mix containing fibres with lower rejuvenator content. These results show that compartmented alginate fibres encapsulating bitumen rejuvenator present a promising new approach for the development of self-healing asphalt pavement systems.

ACS Style

Amir Tabaković; Dirk Braak; Mark van Gerwen; Oguzhan Copuroglu; Wouter Post; Santiago Garcia; Erik Schlangen. The compartmented alginate fibres optimisation for bitumen rejuvenator encapsulation. Journal of Traffic and Transportation Engineering (English Edition) 2017, 4, 347 -359.

AMA Style

Amir Tabaković, Dirk Braak, Mark van Gerwen, Oguzhan Copuroglu, Wouter Post, Santiago Garcia, Erik Schlangen. The compartmented alginate fibres optimisation for bitumen rejuvenator encapsulation. Journal of Traffic and Transportation Engineering (English Edition). 2017; 4 (4):347-359.

Chicago/Turabian Style

Amir Tabaković; Dirk Braak; Mark van Gerwen; Oguzhan Copuroglu; Wouter Post; Santiago Garcia; Erik Schlangen. 2017. "The compartmented alginate fibres optimisation for bitumen rejuvenator encapsulation." Journal of Traffic and Transportation Engineering (English Edition) 4, no. 4: 347-359.

Journal article
Published: 23 June 2017 in Applied Sciences
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This paper explores the potential methods for evaluating a healing system for asphalt pavements. The healing system under investigation involves compartmented calcium-alginate fibres encapsulating an asphalt binder healing agent (rejuvenator). This system presents a novel method of incorporating rejuvenators into asphalt pavement mixtures. The compartmented fibres are used to distribute the rejuvenator throughout the pavement mixture, thereby overcoming some of the problems associated with alternate asphalt pavement healing methods, i.e., spherical capsules and hollow fibres. The asphalt healing efficiency methods to be evaluated in this paper include: (i) standard test methods for asphalt pavements, such as the Indirect Tensile Strength test and the 4 Point Bending Fatigue test; and (ii) alternative fracture tests such as the Semi Circular Bend test. The study employs fracture theory in order to evaluate the efficiency of the damage repair. The research findings demonstrate that including compartmented calcium-alginate fibres encapsulating a rejuvenator into an asphalt pavement mix does not significantly improve the healing properties of the asphalt pavement. Nevertheless, the findings indicate that, with further enhancement, compartmented calcium alginate fibres may present a promising new approach for the development of self-healing asphalt pavement systems. Additionally, the test results indicate that the 4 point bend fatigue test is the most suitable test for evaluating the performance of self healing asphalt pavements.

ACS Style

Amir Tabaković; Luke Schuyffel; Aleksandar Karač; Erik Schlangen. An Evaluation of the Efficiency of Compartmented Alginate Fibres Encapsulating a Rejuvenator as an Asphalt Pavement Healing System. Applied Sciences 2017, 7, 647 .

AMA Style

Amir Tabaković, Luke Schuyffel, Aleksandar Karač, Erik Schlangen. An Evaluation of the Efficiency of Compartmented Alginate Fibres Encapsulating a Rejuvenator as an Asphalt Pavement Healing System. Applied Sciences. 2017; 7 (7):647.

Chicago/Turabian Style

Amir Tabaković; Luke Schuyffel; Aleksandar Karač; Erik Schlangen. 2017. "An Evaluation of the Efficiency of Compartmented Alginate Fibres Encapsulating a Rejuvenator as an Asphalt Pavement Healing System." Applied Sciences 7, no. 7: 647.

Journal article
Published: 14 July 2016 in Smart Materials and Structures
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This paper explores the potential use of compartmented alginate fibres as a new method of incorporating rejuvenators into asphalt pavement mixtures. The compartmented fibres are employed to locally distribute the rejuvenator and to overcome the problems associated with spherical capsules and hollow fibres. The work presents proof of concept of the encapsulation process which involved embedding the fibres into the asphalt mastic mixture and the survival rate of fibres in the asphalt mixture. To prove the effectiveness of the alginate as a rejuvenator encapsulating material and to demonstrate its ability survive asphalt production process, the fibres containing the rejuvenator were prepared and subjected to thermogravimetric analysis and uniaxial tensile test. The test results demonstrated that fibres have suitable thermal and mechanical strength to survive the asphalt mixing and compaction process. The CT scan of an asphalt mortar mix containing fibres demonstrated that fibres are present in the mix in their full length, undamaged, providing confirmation that the fibres survived the asphalt production process. In order to investigate the fibres physiological properties and ability to release the rejuvenator into cracks in the asphalt mastic, the environmental scanning electron microscope and optical microscope analysis were employed. To prove its success as an asphalt healing system, compartmented alginate fibres containing rejuvenator were embedded in asphalt mastic mix. The three point bend tests were performed on the asphalt mastic test samples and the degree to which the samples began to self-heal in response was measured and quantified. The research findings indicate that alginate fibres present a promising new approach for the development of self-healing asphalt pavement systems.

ACS Style

A Tabaković; Wouter Post; Daniel Cantero; Oguzhan Copuroglu; Santiago Garcia; Erik Schlangen. The reinforcement and healing of asphalt mastic mixtures by rejuvenator encapsulation in alginate compartmented fibres. Smart Materials and Structures 2016, 25, 084003 .

AMA Style

A Tabaković, Wouter Post, Daniel Cantero, Oguzhan Copuroglu, Santiago Garcia, Erik Schlangen. The reinforcement and healing of asphalt mastic mixtures by rejuvenator encapsulation in alginate compartmented fibres. Smart Materials and Structures. 2016; 25 (8):084003.

Chicago/Turabian Style

A Tabaković; Wouter Post; Daniel Cantero; Oguzhan Copuroglu; Santiago Garcia; Erik Schlangen. 2016. "The reinforcement and healing of asphalt mastic mixtures by rejuvenator encapsulation in alginate compartmented fibres." Smart Materials and Structures 25, no. 8: 084003.

Book chapter
Published: 24 June 2016 in Materials and Infrastructures 2
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ACS Style

Cliff Nicholls; Matthew Wayman; Konrad Mollenhauer; Ciaran McNally; Amir Tabaković; Amanda Gibney; Aikaterini Varveri; Sean Cassidy; Rea Shahmohammadi; Kevin Gilbert. Effect of Using of Reclaimed Asphalt and/or Lower Temperature Asphalt on the Availability of the Road Network. Materials and Infrastructures 2 2016, 59 -73.

AMA Style

Cliff Nicholls, Matthew Wayman, Konrad Mollenhauer, Ciaran McNally, Amir Tabaković, Amanda Gibney, Aikaterini Varveri, Sean Cassidy, Rea Shahmohammadi, Kevin Gilbert. Effect of Using of Reclaimed Asphalt and/or Lower Temperature Asphalt on the Availability of the Road Network. Materials and Infrastructures 2. 2016; ():59-73.

Chicago/Turabian Style

Cliff Nicholls; Matthew Wayman; Konrad Mollenhauer; Ciaran McNally; Amir Tabaković; Amanda Gibney; Aikaterini Varveri; Sean Cassidy; Rea Shahmohammadi; Kevin Gilbert. 2016. "Effect of Using of Reclaimed Asphalt and/or Lower Temperature Asphalt on the Availability of the Road Network." Materials and Infrastructures 2 , no. : 59-73.

Journal article
Published: 01 January 2016 in Construction and Building Materials
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ACS Style

Amir Tabaković; Ciaran McNally; Eanna Fallon. Specification development for cold in-situ recycling of asphalt. Construction and Building Materials 2016, 102, 318 -328.

AMA Style

Amir Tabaković, Ciaran McNally, Eanna Fallon. Specification development for cold in-situ recycling of asphalt. Construction and Building Materials. 2016; 102 ():318-328.

Chicago/Turabian Style

Amir Tabaković; Ciaran McNally; Eanna Fallon. 2016. "Specification development for cold in-situ recycling of asphalt." Construction and Building Materials 102, no. : 318-328.

Conference paper
Published: 01 January 2016 in Proceedings of the Eighth International Conference on Maintenance and Rehabilitation of Pavements
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ACS Style

Amir Tabakovic; Wouter Post; Santiago Garcia; Erik Schlangen. Compartmented Alginate Fibres as a Healing Agent (Rejuvenator) Delivery System and Reinforcement for Asphalt Pavemnets. Proceedings of the Eighth International Conference on Maintenance and Rehabilitation of Pavements 2016, 144 -153.

AMA Style

Amir Tabakovic, Wouter Post, Santiago Garcia, Erik Schlangen. Compartmented Alginate Fibres as a Healing Agent (Rejuvenator) Delivery System and Reinforcement for Asphalt Pavemnets. Proceedings of the Eighth International Conference on Maintenance and Rehabilitation of Pavements. 2016; ():144-153.

Chicago/Turabian Style

Amir Tabakovic; Wouter Post; Santiago Garcia; Erik Schlangen. 2016. "Compartmented Alginate Fibres as a Healing Agent (Rejuvenator) Delivery System and Reinforcement for Asphalt Pavemnets." Proceedings of the Eighth International Conference on Maintenance and Rehabilitation of Pavements , no. : 144-153.

Book chapter
Published: 03 November 2015 in Advances in Polymer Science
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Self-healing technology is a new field within material technology. It represents a revolution in materials engineering and is changing the way that materials behave. Incorporating self-healing technology into the road design process has the potential to transform road construction and maintenance processes by increasing the lifespan of roads and eliminating the need for road maintenance. By decreasing the unnecessary premature ageing of asphalt pavements, self-healing asphalt can reduce the amount of natural resources used to maintain road networks, decrease the traffic disruption caused by road maintenance processes, decrease CO2 emissions during the road maintenance process and increase road safety. In addition to environmental savings, self-healing materials have the potential to deliver significant cost savings for road network maintenance across the EU. There are three main self-healing technologies available for asphalt pavement design: nanoparticles, induction heating and rejuvenation. This chapter reviews all three options and outlines the future development of self-healing asphalt technology.

ACS Style

Amir Tabaković; Erik Schlangen. Self-Healing Technology for Asphalt Pavements. Advances in Polymer Science 2015, 285 -306.

AMA Style

Amir Tabaković, Erik Schlangen. Self-Healing Technology for Asphalt Pavements. Advances in Polymer Science. 2015; ():285-306.

Chicago/Turabian Style

Amir Tabaković; Erik Schlangen. 2015. "Self-Healing Technology for Asphalt Pavements." Advances in Polymer Science , no. : 285-306.