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Recyclability of epoxy-modified open-graded porous asphalt

Jing, R. (author), Apostolidis, P. (author), Liu, X. (author), Naus, R. (author), Erkens, S. (author), Scarpas, Athanasios (author)

Epoxy asphalt attracted the attention of road authorities in many countries as a solution for du-rable open-graded porous asphalt (OGPA) surface layers with enhanced longevity. Nevertheless, the recycla-bility of aged epoxy asphalt materials has not been thoroughly studied yet. This research presents an experi-mental program conducted in the...

conference paper 2023

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Water diffusion mechanisms in bitumen studied through molecular dynamics simulations

Ma, L. (author), Seyed Salehi, H. (author), Jing, R. (author), Erkens, S. (author), Vlugt, T.J.H. (author), Moultos, O. (author), Greenfield, M.L. (author), Varveri, Aikaterini (author)

Water transport is one of the major factors responsible for moisture damage in asphalt pavements. To study the thermodynamics and kinetics of water transport in bitumen and to uncover microscale mechanisms of moisture-induced damage, molecular dynamics simulations were performed for up to 600 ns for water–bitumen systems with realistic water...

journal article 2023

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Chemical characterisation of bitumen type and ageing state based on FTIR spectroscopy and discriminant analysis integrated with variable selection methods

Ma, L. (author), Varveri, Aikaterini (author), Jing, R. (author), Erkens, S. (author)

The chemical characterization of bitumen type and ageing state are fundamental in determining structural and mechanical properties of bitumen. This work aims to classify various bitumen types at different ageing states and to identify the primary chemical differences relevant to the classification. Fourier transform infrared (FTIR) spectral...

journal article 2023

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Aging and rejuvenation effects on the rheological response and chemical parameters of bitumen

Ren, S. (author), Liu, X. (author), Varveri, Aikaterini (author), Khalighi, S. (author), Jing, R. (author), Erkens, S. (author)

The rejuvenation efficiency of aged bitumen is the main concern when developing rejuvenating agents. It is necessary to develop a method to assess the efficiency of rejuvenators using rheological parameters in the whole frequency region. To this end, the 2S2P1D micromechanics model is adopted to fit the entire G∗ master curves of various...

journal article 2023

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Effect of mineral fillers on epoxy-modified open-graded porous asphalt durability

Jing, R. (author), Apostolidis, P. (author), Liu, X. (author), Erkens, S. (author), Scarpas, Athanasios (author)

Epoxy-asphalt (EA) attracted the attention of road authorities in many countries as a solution for open-graded porous surface layers with enhanced durability and longevity. This research presents an experimental programme to assess the durability of epoxy-modified open-graded porous asphalt (EMOGPA) mixes, emphasising the effects of the...

journal article 2023

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Investigating the rheological properties and compatibility behaviours of RET/PE and WR/CR/ SBS compound-modified bitumen

Ren, S. (author), Liu, X. (author), Jing, R. (author), Gao, Y. (author), Lin, P. (author), Erkens, S. (author)

Two types of elastomer/plastic compound-modified bitumen were developed by means of incorporating the reactive elastomeric terpolymer (RET) into the plastic (high-density polyethylene HDPE or recycled polyethylene RPE) modified bitumen and adding the wax residue (WR) into the bitumen/elastomer (crumb rubber CR or styrene–butadiene–styrene SBS)...

journal article 2023

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Molecular dynamics simulation and experimental validation on the interfacial diffusion behaviors of rejuvenators in aged bitumen

Ren, S. (author), Liu, X. (author), Gao, Y. (author), Jing, R. (author), Lin, P. (author), Erkens, S. (author), Wang, H. (author)

This study aims to multiscale investigate the effects of rejuvenator type, temperature, and aging degree of bitumen on the diffusion behaviors of rejuvenators (bio-oil BO, engine-oil EO, naphthenic-oil NO, and aromatic-oil AO) in aged binders. The molecular dynamics (MD) simulation method is performed to detect the molecular-level diffusion...

journal article 2023

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Life cycle assessment of epoxy-modified asphalt pavement

Jing, R. (author), Apostolidis, P. (author), Liu, X. (author), Naus, R. (author), Erkens, S. (author), Scarpas, Athanasios (author)

This research aims to evaluate the potential environmental impact of epoxy-modified asphalt used as a pavement material for roadways in the Netherlands and identify what determines the environmental performance of the epoxy asphalt technology through life cycle assessment. Results indicated that the incor-poration of epoxy binder in asphalt...

conference paper 2023

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First-Year Field Performance of Epoxy-Modified Asphalt

Jing, R. (author), Apostolidis, P. (author), Liu, X. (author), Erkens, S. (author), Scarpas, Athanasios (author)

Pavement materials containing epoxy-asphalt are mainly used to enhance the fatigue cracking resistance of surfacing layers on bridges. These materials have also been proposed for roadways, but limited field data are available. In this research, a fully instrumented epoxy-modified asphalt surfacing layer was applied to measure strain responses in...

journal article 2022

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Thermodynamics and kinetics of moisture transport in bitumen

Ma, L. (author), Varveri, Aikaterini (author), Jing, R. (author), Kasbergen, C. (author), Erkens, S. (author)

Moisture in bitumen and at the bitumen-aggregate interface affects the cohesive and adhesive properties of asphalt mixtures, which are critical for the service performance and durability of pavements. This paper aims to investigate the kinetics and thermodynamics of moisture transport in bitumen at various temperatures and relative humidity...

journal article 2022

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Effect of Bio-oil on Rheology and Chemistry of Organosolv Lignin–Modified Bitumen

Zhang, Y. (author), Liu, X. (author), Ren, S. (author), Jing, R. (author), Lin, P. (author), Apostolidis, P. (author), Erkens, S. (author), Wang, Xuancang (author), Scarpas, Athanasios (author)

Lignin, one of the most abundant natural polymers, has been extensively studied as an additive in bituminous binders. Even though the lignin improves the overall resistance against oxidative aging of bitumen, it could lead to high thermal cracking sensitivity. In this study, a bio-oil (i.e., rapeseed oil) is implemented in lignin-modified...

journal article 2022

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Toward the long-term aging influence and novel reaction kinetics models of bitumen

Ren, S. (author), Liu, X. (author), Lin, P. (author), Jing, R. (author), Erkens, S. (author)

This study aimed to explore the long-term aging influence on chemo rheological properties and develop novel consecutive models for the long-term aging reaction kinetics of bitumen. The results revealed that the aging index was significantly dependent on the types of selected parameters. The Zero-order model was suitable to describe the long-term...

journal article 2022

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Ageing Behavior of Porous and Dense Asphalt Mixtures in the Field

Jing, R. (author), Varveri, Aikaterini (author), Liu, X. (author), Scarpas, Athanasios (author), Erkens, S. (author)

Bitumen ageing is one of the principal factors causing the deterioration of asphalt pavements. As bitumen ages, the pavement loses its ability to relax stresses during loading/unloading and thermal cooling process, thus the risk of cracking increases. Oxidation and ultraviolet (UV) radiation are believed to be the main factors that can cause...

book chapter 2021

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Effect of bio-oil on low-intermediate temperature properties of organosolv lignin-bitumen

Zhang, Y. (author), Liu, X. (author), Ren, S. (author), Jing, R. (author), Gard, W.F. (author), Apostolidis, P. (author), Erkens, S. (author), Scarpas, Athanasios (author)

Lignin, one of the most abundant natural polymers, has been extensively studied as liquid or solid additive in bituminous binders. Despite the fact the organosolv lignin in bitumen improves the overall resistance against oxidative aging, lignin could lead to binders of high thermal cracking sensitivity. In this study, a bio-based oil is...

conference paper 2021

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Differences in the ageing behavior of asphalt pavements with porous and stone mastic asphalt mixtures

Jing, R. (author), Varveri, Aikaterini (author), Liu, X. (author), Scarpas, Athanasios (author), Erkens, S. (author)

The degradation of bituminous materials as a result of ageing has a significant effect on asphalt pavement performance. In this study, one porous asphalt (PA) section and one stone mastic asphalt (SMA) asphalt pavement section were designed and constructed in 2014 and exposed to the actual environmental condition. To study the change in the...

journal article 2021

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Effect of recycling agents on rheological properties of epoxy bitumen

Jing, R. (author), Apostolidis, P. (author), Liu, X. (author), Naus, Robbert (author), Erkens, S. (author), Scarpas, Athanasios (author)

The rejuvenation of epoxy modified bituminous binders is a topic of much debate because such binders may not be able to melt at high temperatures and restore their properties using recycling agents. This paper presents the results of an experimental program developed to evaluate the re-usability of an epoxy modified bitumen, or epoxy bitumen, by...

journal article 2021

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Comprehensive review on the transport and reaction of oxygen and moisture towards coupled oxidative ageing and moisture damage of bitumen

Ma, L. (author), Varveri, Aikaterini (author), Jing, R. (author), Erkens, S. (author)

Oxidative ageing and moisture damage are key factors in bitumen degradation and asphalt pavement deterioration. The effects of oxygen and moisture on bitumen are governed by their transport and reaction processes. This paper provides an overview of theories and concepts developed to describe the kinetics, thermodynamics and mechanisms of...

journal article 2021

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Effect of filler properties on the hydrothermal ageing of bituminous mastics

Varveri, Aikaterini (author), Jing, R. (author), Tarsi, G. (author), Erkens, S. (author)

Moisture sorption can significantly influence hydrothermal ageing and alter the chemical and rheological properties of bituminous mastics. Mineral filler particles are added to bituminous binders to form mastics with increased stiffness. The addition of fillers can considerably change the moisture sorption and the physico-chemical properties...

journal article 2021

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Evaluation of Organosolv Lignin as an Oxidation Inhibitor in Bitumen

Zhang, Y. (author), Liu, X. (author), Apostolidis, P. (author), Jing, R. (author), Erkens, S. (author), Poeran, Natascha (author), Scarpas, Athanasios (author)

Organosolv lignin, a natural polymer, has been used in this study as an oxidation inhibitor in bitumen. Particularly, the effect of oxidative aging on the chemical compositional changes and on the rheology of bituminous binders with organosolv lignin and the impact to inhibit oxidation in bitumen were evaluated. Firstly, after analyzing the...

journal article 2020

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Preliminary study on using lignin as aging inhibitor in bitumen

Zhang, Y. (author), Liu, X. (author), Jing, R. (author), Apostolidis, P. (author), Erkens, S. (author), Scarpas, Athanasios (author)

During oxidative aging, oxygen reacts with active molecules present in bitumen producing polar compounds, principally ketones and sulfoxides, and increasing in the portion of asphaltenes. In general, oxidation reactions in bitumen yields to change its generic chemical composition and finally its colloidal structure deteriorating the physico...

conference paper 2020