A5036593842- Asphalt Pavement Performance Evaluation
- Infrastructure Maintenance and Monitoring
- Petroleum Processing and Analysis
- Grouting, Rheology, and Soil Mechanics
- Polymer composites and self-healing
- Natural Fiber Reinforced Composites
- Environmental Impact and Sustainability
- Concrete and Cement Materials Research
- Epoxy Resin Curing Processes
- Innovative concrete reinforcement materials
- Urban Transport and Accessibility
- Sustainability and Ecological Systems Analysis
- Geotechnical Engineering and Underground Structures
- Recycling and Waste Management Techniques
- NMR spectroscopy and applications
- Municipal Solid Waste Management
University of Cambridge
2024
Swiss Federal Laboratories for Materials Science and Technology
2024
South China University of Technology
2020-2022
University of Nottingham
2018-2021
TU Wien
2014-2017
Abstract Five bituminous samples were carefully studied by confocal laser scanning microscopy using 488 nm excitation radiation and observing 500–530 of emission. The images revealed the microstructure bitumen. influence admixture mineral aggregates concerning was tested. For minerals, no significant found. understanding origin fluorescent signals, separated into asphaltenes maltenes analyzed with fluorescence spectroscopy. Although former works have assumed emissions in bitumen to be found...
Bitumen is a widely used material, but its aging behavior only understood at macroscopic level as hardening and embrittlement over time. To assess bitumen in the long run, pressure vessel (PAV) testing procedure was developed. However, this including high-pressure high-temperature oxidation of has not yet been on molecular level. Here, sample SARA fractions, i.e., saturates, aromatics, resins, asphaltenes, were investigated comparison with their aged samples to study changes chemical...
During ageing the chemical composition of bitumen changes, which is reflected by change in distribution fractions. By measuring spectrum fractions, and correlating fractional changes during within with corresponding spectra, a connection between bitumen's age fluorescence can be drawn. While increases, its emission intensity decreases. Therefore non-aged, laboratory aged (rolling thin film oven test (RTFOT) RTFOT + pressure vessel) extracted from asphalt slabs field after different time...
Fatigue damage is one of the main distresses responsible for deterioration asphalt roads. Self-healing, occurring during rest periods, has been shown to increase total number loading cycles. The assumed depend on time at which healing induced and duration. In first stage, in caused by thixotropy, self-heating permanent deformation, recovery equal reversible phenomena thixotropy self-heating. second third stages, closure cracks starts dominantly contribute gain additional healable crack...
The large quantity and long service time of construction has a crucial impact on the flow resources during construction, maintenance, at end life. Reducing waste disposal increasing recycling rates consequently reduce consumption primary raw materials. Hence, through material stock analysis, consumption, generation, utilization can be quantified. Previous research turnover in transportation infrastructure sector focused well-developed cities or countries showed that maintenance an...
<title>Abstract</title> An emerging strategy to compensate for the greenhouse gas emissions of products is incorporate carbonaceous materials obtained from sequestered atmospheric carbon dioxide, mainly through biomass conversion. This approach can turn asphalt pavements into a functional sink. In particular, biochar has been used as bitumen modifier. However, due performance limitations, were only added in small quantities mixtures. alternative produce lightweight aggregates substitute part...
Self-healing of asphalt is assumed to be a flow process where bitumen flows into cracks close them. Hence, the rheological behaviour one main factors affecting self-healing together with damage history, healing duration and pressure (external compressive forces or internal thermal expansion). Bitumen-filler interaction influences it hypothesised that material flowing during mixture bitumen, filler eventually fine aggregates. In paper, ratio was determined by mechanical testing accelerated an...
first_page settings Order Article Reprints Font Type: Arial Georgia Verdana Size: Aa Line Spacing: Column Width: Background: Open AccessAbstract Resource Efficiency to Achieve a Circular Economy in the Asphalt Road Construction Sector by Daniel Grossegger † School of Civil and Transportation Engineering, South China University Technology, Guangzhou 510641, Presented at 1st International Online Conference on Infrastructures, 7–9 June 2022; Available online: https://ioci2022.sciforum.net/....