A5004852820- Asphalt Pavement Performance Evaluation
- Infrastructure Maintenance and Monitoring
- Innovative concrete reinforcement materials
- Recycled Aggregate Concrete Performance
- Enhanced Oil Recovery Techniques
- Geotechnical Engineering and Underground Structures
- Transport Systems and Technology
- Smart Materials for Construction
- Corrosion Behavior and Inhibition
- Acoustic Wave Phenomena Research
- Concrete and Cement Materials Research
- NMR spectroscopy and applications
- Hydrocarbon exploration and reservoir analysis
- Noise Effects and Management
- Material Properties and Failure Mechanisms
- Polymer composites and self-healing
- Polymer Nanocomposites and Properties
- Calcium Carbonate Crystallization and Inhibition
- Mesoporous Materials and Catalysis
- Geotechnical and construction materials studies
- Rheology and Fluid Dynamics Studies
- Petroleum Processing and Analysis
- Engineering Technology and Methodologies
- Environmental Impact and Sustainability
- Non-Destructive Testing Techniques
Swiss Federal Laboratories for Materials Science and Technology
2019-2024
GEO Partner (Switzerland)
2024
ETH Zurich
2022
Toronto Metropolitan University
2017-2021
University of Waterloo
2017-2019
Université Toulouse III - Paul Sabatier
2015-2018
Laboratoire Matériaux et Durabilité des Constructions
2015-2018
Université de Toulouse
2015
The use of waste plastics in partial asphalt binder replacement and substitute for polymer modification has the potential to contribute sustainability road infrastructure as well preservation natural resources. In this study, two types polyethylene (PE) PE-pellets PE-shreds (a by-product former, currently incinerated after production) were blended with a conventional order analyze their effect on chemo-mechanical thermal behavior. Particular attention was paid characterization PE description...
This research aims to determine if the observed improvements using polyethylene (PE) waste in asphalt binder translate into better performance at mixture scale laboratory environment while overcoming stability and homogeneity issues experienced level. is accomplished through a round-robin multinational experimental program covering four continents, with active participation of eleven laboratories within RILEM TC 279-WMR. PE modified AC16 mixtures were prepared employing dry process local...
Recycled Concrete Aggregates (RCA) form a significant part of construction and demolition waste its recycling is crucial for long-term sustainability. This study examined the incorporation various fractions RCA in Semi-Dense Asphalt (SDA) mixtures. The control SDA aggregates were replaced by selected 2/4 mm (coarse) 0.125/2 (sand) at 100% 50% each, filler fraction. replacement was performed mass with only one fraction being any single mixture. mixtures evaluated their volumetrics, indirect...
In this paper, the combined effect of aging temperatures and cooling medium on rheological properties asphalt binder was experimentally investigated evaluated. Two 70/100 penetration grade binders, which were part core materials used by active RILEM committee CMB-252, selected for purpose. The artificially aged to six different conditions, first with Rolling Thin Film Oven Test (RTFOT) at three (123°C, 143°C, 163°C), then, standard Pressure Aging Vessel (PAV). Next, temperature frequency...
In order to improve the sustainability of low-noise Semi-Dense Asphalt (SDA), aggregate fractions were replaced by recycled concrete aggregates (RCA), an abundant construction waste. The replacement was conducted 2/4 and 0.125/2 mm corresponding (coarse), 0.063/4 (sand) control virgin aggregates, at about 15% volume mixture for each fraction. Additionally, RCA filler entirely, bringing level over 20% total mixture. binder added same amount as +0.5%, with additional compensating estimated...
Waste plastic in low noise asphalt mixtures can be a viable alternative to with polymer modified bitumen. The performance of semi dense (SDA) waste polyethylene (PE) is investigated. cyclic compression test (CCT) and semi-circular bending (SCB) was used for characterization high temperature performance. CCT results revealed that the PmB mixture had shown significantly higher resistance compared PE mixture. However, modification showed some improvements terms loading when using same base...
Noise mitigation is the main advantage of semi-dense asphalt (SDA) pavements compared to traditional such as stone-mastic (SMA), but noise not quantitatively considered in life cycle assessment (LCA). This article performs a comprehensive LCA for SMA and SDA including considerations. State-of-the-art sound emission acoustical ageing models were used determine road traffic noise. The latest Swiss dose-response curves current exposure data evaluate health impacts due Additionally, also...
The observation of asphalt binder with the environmental scanning electron microscope (ESEM) has shown potential to observe microstructure and its evolution aging. A procedure for induction identification in was established this study included sample preparation parameters. suitable heat-sampling method determined test several stainless steel Teflon moulds developed, finding that preferable material. magnification ESEM settings conducive observing 3D were through a number observations be...
The chemical properties and microstructural features of two straight-run virgin asphalt binders (PG 52-34 58-28) a reclaimed pavement (RAP) binder as well their corresponding saturate, aromatic, resin, asphaltene (SARA) fractions were examined. Additionally, the with laboratory plant mixture blending also observed. Examining SARA revealed that increases in carbonyl index RAP relative to mainly found resin fractions, while increase sulfoxide is fraction. examined using Fourier transform...
Electric Arc Furnace Slag (EAFS) is one of the primary by-products steel recycling industry, which comes out initially as large pieces, that can be further crushed and used aggregates in infrastructure materials. While being a waste product, relatively high strength means EAFS provide favorable properties when correctly. One possible destination for higher value semi-dense asphalt (SDA), surface course low-noise pavement. Due to percentage air voids SDA (10–18%), mixture mechanical depend on...
Fluorescent technique has been used to characterise the morphology of polymer modified bitumen for years. However, main problem this is a missing standardised protocol image capture factors and processing algorithms (CF&PA). The purpose study was find out effects CF&PA on set up morphological analysis SBS polymer-modified (PMB) using fluorescent microscopy technique. In order protocol, images were captured processed with different CF&PA. Capture mainly include magnification, exposure time...
Construction materials research is consistently striving to improve sustainability, in the reduction of virgin by use otherwise landfilled same purpose. Crumb rubber (CR) from end-of-life tires and polyethylene terephthalate (PET) post-consumer liquid containers are two most commonly circulating forms waste urban environment. This study investigated replacement semi-dense asphalt (SDA) sand untreated mechanically shredded CR PET, at 2.5 5.1% respectively total mass aggregates. The mixtures...
There have been a several studies observing bitumen microstructure using the environmental scanning electron microscope (ESEM); however, these few and far between. Nevertheless, there findings that show under ESEM clearly evolving with ageing. The objective of this paper is to focus on sample conditioning, oxidation blending. A conditioning procedure was produced effect freezing (−18°C) for 19 h examined. straight-run PG 58-28 sampled, same being oxidised hot air. Additionally, two bitumens...
Waste plastic in low noise asphalt mixtures can be a viable alternative to polymer modified (Pmb) mixtures. The performance of semi dense (SDA) with waste polyethylene (PE) is investigated. cyclic compression test (CCT) and semi-circular bending (SCB) was used for high temperature performance. CCT results revealed that the PmB mixture had shown significantly higher resistance compared PE mixture. However, modification showed some improvements terms loading when using same base binder without...
Among the urban societal burdens rolling noise generation from tire pavement interaction and waste stand apart. Many materials can be used in pavements with comparable mechanical performance. Noise-related characteristics such as porosity, sound absorption surface texture, were measured for semi-dense low mixtures using namely: recycled concrete aggregates, crumb rubber, polyethylene terephthalate polyethylene. The results show that use of these is a viable sustainable option pavements,...
The laboratory evaluation of the performance a number asphalt extraction solvents was conducted. testing conducted on unmodified and polymer modified binder with Bitumen Degradation Test (BDT) RAP mixtures centrifuge extraction. chemical interaction between solvent analysed by Fourier Transform Infrared (FTIR) Spectrometry. Several commonly used were tested including trichloroethylene, dichloromethane, toluene xylene along alternative agents. agents included chlorinated, petroleum-based...
Incorporating crumb rubber (CR) using the dry process, directly in asphalt mixture rather than into bituminous binder requires no plant retrofitting, and therefore is most practical industrial method for CR incorporation mixtures. Nevertheless, very few large scale studies have been conducted. This work uses a holistic approach reports on functional environmental performance of mixtures with different concentrations fabricated employing process plants. Gaseous emissions were monitored during...