Searched for: subject%3A%22bitumen%22
(1 - 20 of 122)

Pages

document
Mortier, Lucas (author)
Re-refined Engine Oil Bottoms (REOB) are a waste product from the re-refining process of waste engine oil. There is a large incentive in the world to produce recycled engine oil and the production of REOB in this process is increasing. On the other hand refineries are going through transitions due to economic and regulatory reasons (i.e. IMO...
master thesis 2024
document
Ren, S. (author), Liu, X. (author), Erkens, S. (author)
The low-temperature relaxation and fatigue cracking performance are two essential aspects in estimating the rejuvenation efficiency of recycling agents (RAs). This study aims to fundamentally investigate the effects of recycling agent type/dosage and aging degree of bitumen on thermodynamic and rheological properties of rejuvenated bitumen at...
journal article 2024
document
Ren, S. (author), Liu, X. (author), Erkens, S. (author)
This study implements molecular dynamics (MD) simulations to explore the atomic-level energy properties of rejuvenated bitumen, considering the influence of different recycling agent (RA) types, dosages and aging levels of bitumen. Moreover, the potential correlations between energy indices and high-temperature performance of rejuvenated bitumen...
journal article 2024
document
Gao, Y. (author), Liu, X. (author), Ren, S. (author), Assaf Martinez-Streignard, E.I. (author), Liu, Pengfei (author), Zhang, Yuqing (author)
Bitumen fatigue resistance is critical to determine the overall fatigue performance and service life of asphalt pavements. However, the mechanisms responsible for fatigue damage of bitumen have previously not been well understood. Molecular dynamics (MD) simulation has recently emerged as a powerful computer-aided numerical technique to model...
journal article 2024
document
Assaf Martinez-Streignard, E.I. (author), Liu, X. (author), Lin, P. (author), Erkens, S. (author)
This paper presents a United Atom (UA) force field for simulating hydrocarbon molecules in bituminous materials, integrating explicit hydrogens into beads with their parent atom. This method simplifies all-atom molecular models, significantly accelerating Molecular Dynamics (MD) simulations of bitumen by 10 to 100 times. Key advantages...
journal article 2024
document
Garcia Rea, V.S. (author)
Anaerobic digestion (AD) is a biochemical process in which organic matter is converted into biogas in a series of biochemical reactions. The development of high-rate anaerobic reactors (HRAR) led to the breakthrough of full-scale applications of AD for the treatment of industrial wastewater. HRARs, such as the upflow anaerobic sludge blanket ...
doctoral thesis 2023
document
LI, BOWEN (author)
This master's thesis addresses a critical gap in the field of road construction by focusing on the limitations of Styrene-Butadiene-Styrene modified bitumen (SBS-MB), a widely-used binder. While SBS-MB offers superior performance, its long-term efficacy is compromised due to various aging processes. Existing rejuvenators are insufficient for...
master thesis 2023
document
Hendrikse, Hans C. (author), El Khallabi, Hamza (author), Hartog, Thomas (author), Varveri, Aikaterini (author), Tolboom, Anthon (author)
The concept of a circular economy, where waste materials are transformed into valuable resources, is gaining increasing attention. However, many waste streams are difficult to recycle due to their mixed composition and broad molecular distribution. This paper explores the potential of repurposing mixed materials, specifically focusing on...
journal article 2023
document
Assaf Martinez-Streignard, E.I. (author), Liu, X. (author), Lin, P. (author), Erkens, S. (author), Nahar, Sayeda (author), Mensink, Liz I.S. (author)
Conventional Molecular Dynamics (MD) models of bitumen are built by homogeneously mixing molecules in a volume without considering that the molecules in bitumen are known to exhibit phase behavior and form distinctive molecular arrangements. These are known to have a significant impact in the behavior of bitumen, and considering their...
journal article 2023
document
Apostolidis, P. (author), Porot, Laurent (author)
Bituminous binders are foreseen as colloidal dispersed systems characterised by high chemical complexity containing a plethora of molecules classified into maltenes and asphaltenes. The effect of these fractions on the overall response of bituminous binders remains elusive. This research selected two binders from the same refinery but with...
journal article 2023
document
Anupam, K. (author), Akinmade, O.D. (author), Kasbergen, C. (author), Erkens, S. (author), Adebiyi, Festus (author)
The demand for alternative bitumen which could fully/partially replace Petroleum sourced bitumen for pavement construction is globally increasing. The increase in demand can be associated with several factors: depletion in crude oil resources, advances in crude oil refining processes, increased demand for highway infrastructure, and regional...
review 2023
document
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
document
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
document
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
document
Shi, Baocun (author), Liu, Quan (author), Gao, Y. (author), Wu, Jiantao (author), Chen, Jingya (author)
The occurrence of cohesive/adhesive hybrid failure at the bitumen-aggregate interface is widely acknowledged, however, the quantitative evaluation of the cohesion/adhesion proportion is relatively weak. This study explored cohesive/adhesive hybrid failure and provided a quantitative analysis of the proportion between cohesion and adhesion....
journal article 2023
document
Tabakovic, A. (author), Lemmens, Jeremy (author), Tamis, J. (author), van Vliet, Dave (author), Nahar, Sayeda (author), Suitela, Willem (author), van Loosdrecht, Mark C.M. (author), Leegwater, G.A. (author)
Bitumen is a key constitutive material in asphalt pavements. It binds together the rock scaffolding of a pavement. Bitumen provides asphalt pavement with flexibility and enables it to respond to traffic loading and return to its original condition after the loading, i.e. bitumen restores/repairs the damage. In Porous Asphalt (PA) or...
journal article 2023
document
Ren, S. (author), Liu, X. (author), Erkens, S. (author)
This study aims to systematically investigate the influence of rejuvenator type/dosage and the aging degree of bitumen on the rutting resistance, flow behavior, and elastic/creep potential of rejuvenated bitumen at high temperatures. The rutting parameter (G*/sinδ), rutting failure temperature (RFT) from Linear viscoelastic test (LVE), zero...
journal article 2023
document
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
document
Tabakovic, A. (author), van Vliet, Dave (author), Roetert-Steenbruggen, Kirsten (author), Leegwater, G.A. (author)
Bitumen rejuvenators are used to improve or restore the physical and mechanical performance of aged bitumen. Traditional bitumen rejuvenators are a product of crude oil. As crude oil production declines and the environmental and financial costs of crude oil increase, there is an urgent need to identify more environmentally sustainable bitumen...
journal article 2023
document
Ren, S. (author), Liu, X. (author), Erkens, S. (author)
This study aims to propose critical fatigue indicators for evaluating the restoration effectiveness of various rejuvenators on the fatigue performance of aged bitumen. The influence factors of rejuvenator type/dosage and aging degree of bitumen are involved, and different fatigue parameters from linear viscoelastic (LVE), linear amplitude sweep ...
journal article 2023
Searched for: subject%3A%22bitumen%22
(1 - 20 of 122)

Pages