Effect of polymer-modified bitumen and reclaimed asphalt pavement on the physical properties of bitumen

The high cost of road construction due to the energy required for new material production and the environmental impact necessitates the use of reclaimed asphalt pavement (RAP) and other waste materials. This paper examined the effect of using RAP with a PET additive as a rejuvenator. PET additive (2%) was added to the virgin binder (VB) of 60/70 penetration grade to form a Polymer modified bitumen (PMB). RAP percentages used were 30, 40, and 50%, respectively. The physical properties were examined using the penetration, softening point, and ductility. The results show that the physical properties of RAP were improved by utilizing Rap binder (RB) and PMB mix ratio. The penetration and ductility values increased by 46.4% and 66.7%, respectively, with the PMB (30): RB (70) ratio blend, compared to RB: VB blend. This suggests a reduction in brittle behavior and less stiffness with the addition of PMB in the blend, enhancing the flexibility of the RAP. Although both mixtures blended with RB exhibited softening points within the acceptable range, improved performance was observed with RB/PMB mix blend over RB/VB blend when used in hot asphalt mixtur

Effect of polymer-modified bitumen and reclaimed asphalt pavement on the physical properties of bitumen

The high cost of road construction due to the energy required for new material production and the environmental impact necessitates the use of reclaimed asphalt pavement (RAP) and other waste materials. This paper examined the effect of using RAP with a PET additive as a rejuvenator. PET additive (2%) was added to the virgin binder (VB) of 60/70 penetration grade to form a Polymer modified bitumen (PMB). RAP percentages used were 30, 40, and 50%, respectively. The physical properties were examined using the penetration, softening point, and ductility. The results show that the physical properties of RAP were improved by utilizing Rap binder (RB) and PMB mix ratio. The penetration and ductility values increased by 46.4% and 66.7%, respectively, with the PMB (30): RB (70) ratio blend, compared to RB: VB blend. This suggests a reduction in brittle behavior and less stiffness with the addition of PMB in the blend, enhancing the flexibility of the RAP. Although both mixtures blended with RB exhibited softening points within the acceptable range, improved performance was observed with RB/PMB mix blend over RB/VB blend when used in hot asphalt mixtur

Effect of Polymer-Modified Bitumen and Reclaimed Asphalt Pavement on The Physical Properties of Bitumen

The high cost of road construction due to the energy required for new material production and the environmental impact necessitates the use of reclaimed asphalt pavement (RAP) and other waste materials. This paper examined the effect of using RAP with a PET additive as a rejuvenator. PET additive (2%) was added to the virgin binder (VB) of 60/70 penetration grade to form a Polymer modified bitumen (PMB). RAP percentages used were 30, 40, and 50%, respectively. The physical properties were examined using the penetration, softening point, and ductility. The results show that the physical properties of RAP were improved by utilizing Rap binder (RB) and PMB mix ratio. The penetration and ductility values increased by 46.4% and 66.7%, respectively, with the PMB (30): RB (70) ratio blend, compared to RB: VB blend. This suggests a reduction in brittle behavior and less stiffness with the addition of PMB in the blend, enhancing the flexibility of the RAP. Although both mixtures blended with RB exhibited softening points within the acceptable range, improved performance was observed with RB/PMB mix blend over RB/VB blend when used in hot asphalt mixture

Atomic scale simulation of oxide and metal film growth

Improvement of wear resistant and tribological properties of materials is of great technological importance and is the main relevance of the current oxide coatings study. Aluminum oxide is especially interesting because of its very rapid self-repair capacity. As a second subject of this thesis, Cu film growth on Ta, a diffusion barrier material, is of great interest for further miniaturization of IC devices to overcome the interdiffusion problem of Cu in submicron applications. The aim of the present work was to improve our understanding of oxide and metal film growth on metal substrates by performing simulations at the atomic scale. For this type of simulations, molecular dynamics (MD) is a powerful method, because of its atomic resolution and full evolution monitoring. To operate on the required length scale for sufficiently large systems, the combination of classical MD with the help of density functional theory (DFT) overcomes the difficulties that appear if just pure first principles or experimental techniques are applied. In this work a powerful MD model for metal-oxide film growth has been developed, and MD simulations of Al-O/Al growth (on a relatively small surface area) and Cu/Ta growth (on a large surface area) have been performed.Structure and Change in Materials; Surfaces and InterfacesMechanical, Maritime and Materials Engineerin

Culinary Mapping: A New Narrative for Albanian Gastronomy

Working with RRNO, an Albanian gastronomic organization, this project delved into the development and presentation of stories involving the gastronomy and culture of rural Albanian villages. The team used a GIS to organize data RRNO collects which includes notes on villages and their gastronomy, researched storytelling elements, investigated practices regarding story structure and archetype, and analyzed display and exhibition of stories through multimedia elements using the Esri suite. Through the study, the team provided manuals detailing the technical aspects of the project, alongside recommendations and strategies for future data collection and story construction involved in RRNO’s Albanian Gastronomic Expedition and future projects