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Ritsema, Mark Jorrit (author)Churches have always been the centre of Dutch society to gather under one roof (De Kruijf & De Roest, 2010). Due to the secularization of the Netherlands, church vacancy is increasing. Currently, churches still fulfill a central function within a city, village or neighborhood (Kerkmagazine, 2022). The Grote- of Mariakerk is one of them, and...master thesis 2023
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Shang, Y. (author), Nogal Macho, M. (author), Teixeira, Rui (author), Wolfert, A.R.M. (author)Transition zones such as level crossing and bridge approaches are critical links in railway networks due to higher degradation rates and maintenance needs. In this context, parametric optimization has been applied to improve the design in transition zones; however, it requires a more computationally efficient tool to support repetitive...journal article 2023
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Lyu, X. (author), Voskov, D.V. (author)A consistent thermodynamic model based on a combination of the Peng-Robinson equation of state for gas components with an activity model for the aqueous phase is utilized in this study to accurately evaluate the performance of geologic CO<sub>2</sub> storage in saline aquifers. To account for thermal effects, the phase enthalpy and...journal article 2023
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Ramirez, Tomas (author)<br/>The maintenance and repairs of transition zones pose significant challenges in the railways industry due to their accelerated degradation rates in comparison to free tracks. These zones, characterized by track property variations, amplify their response when a source travels along the tracks. The resulting amplifications in stress and...master thesis 2023
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Chumyen, P. (author), Connolly, D. P. (author), Woodward, P. K. (author), Markine, V.L. (author)Railway track transitions are zones where there is an abrupt change in the track-ground structure. They are often the location of rapid track deterioration, which means more frequent track maintenance is needed compared to plain line tracks. With the aim of reducing maintenance, modern transition zone designs use tapered stiffness earthwork...journal article 2023
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Jia, W. (author), Markine, V.L. (author), Goncalves Carvalho, M.D. (author), Connolly, David P. (author), Guo, Y. (author)Differential railway track settlement can result in ballast voids, leading to sleepers that hang from the rail and are no longer supported by the ballast. These hanging sleepers are damage for track component. As a solution, this paper proposes and investigates a new concept sleeper with a wedge-shaped geometry, intended to stimulate the...journal article 2023
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He, S. (author), Chen, Y. (author), Liang, M. (author), Yang, En-Hua (author), Schlangen, E. (author)This study investigates the microstructural changes of cement paste due to the inclusion of polymeric microfiber at different water-to-cement (w/c) ratios. A procedure to quantify the porosity of epoxy impregnated interfacial transition zone (ITZ) is also presented. Results show that the microstructures of the ITZ beneath and above a...journal article 2023
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Jain, A. (author), Metrikine, A. (author), Steenbergen, M.J.M.M. (author), van Dalen, K.N. (author)This comprehensive study addresses the persistent issue of railway transition zone degradation, evaluating the efficacy of the most commonly used mitigation measures and proposing a novel Safe Hull-Inspired Energy Limiting Design (SHIELD) of a transition structure. Firstly, this work assesses the traditional transition structures, including...journal article 2023
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Faragau, Andrei B. (author), Jain, A. (author), de Oliveira Barbosa, J.M. (author), Metrikine, A. (author), van Dalen, K.N. (author)This paper studies the effectiveness of adding auxiliary rails as a mitigation measure for degradation in transition zones of railway tracks. More specifically, it investigates the settlement mechanisms counteracted by the additional rails. Results show that when the system’s response is in the quasi-static regime, adding auxiliary rails over...conference paper 2023
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Jain, A. (author), van Dalen, K.N. (author), Metrikine, A. (author), Faragau, Andrei B. (author), Steenbergen, M.J.M.M. (author)ransition zones in railway tracks experience strong amplification of stress and strain fields due to the passage of train over inhomogeneity. The inhomogeneity in these zones can be attributed to changes in mechanical properties of material along the longitudinal direction of the track, and to displacement/traction discontinuities at interfaces...conference paper 2023
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Unsiwilai, S. (author), Wang, L. (author), Nunez, Alfredo (author), Li, Z. (author)This paper presents a methodology for monitoring transition zones using responses of multiple-axle box acceleration (multi-ABA) measurements. The time–frequency characteristics of the vertical ABA signals from four wheelsets are analyzed. The major contributions are as follows. (1) We propose four key performance indicators (KPIs) to quantify...journal article 2023
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Jouna, Behnam (author)In transition zones, railway tracks experience significant inhomogeneity in their mechanical properties—more specifically in vertical stiffness. In such areas, conventional tracks (soft tracks) are typically encountered with other engineering structures with noticeably larger stiffness, such as bridges and culverts (stiff tracks). This...master thesis 2022
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Wehrle, Hannah (author)The reason for this choice of topic is a life-long bewilderment towards the self-destructive potential of humankind. Supposed continuous accumulation of value is nurturing some of the most destructive and unvaluable events that this globe has ever seen. In many cases, the driver for what we do - our idea of what is valuable - seems to be leading...master thesis 2022
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Gan, Y. (author), Zhang, Hongzhi (author), Liang, M. (author), Zhang, Y. (author), Schlangen, E. (author), van Breugel, K. (author), Šavija, B. (author)In this study, the flexural strength and fatigue properties of interfacial transition zone (ITZ) were experimentally investigated at the micrometre length scale. The hardened cement paste cantilevers (150 × 150 × 750 μm<sup>3</sup>) attached to a quartzite aggregate surface were prepared and tested under the monotonic and cyclic load using a...journal article 2022
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Wang, Xinyue (author), Dong, Sufen (author), Li, Z. (author), Han, Baoguo (author), Ou, Jinping (author)This study investigates the effects of nanofillers on the interfacial transition zone (ITZ) between aggregate and cement paste by using nanoindentation and statistical nanoindentation techniques. Moreover, the underlying mechanisms are revealed through micromechanical modeling. The nanoindentation results indicate that incorporating...journal article 2022
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Faragau, A.B. (author), Metrikine, A. (author), van Dalen, K.N. (author)Hyperloop is an emerging high-speed transportation system in which air resistance is minimised by having the vehicle travel inside a de-pressurised tube supported by columns. This design leads to a strong periodic variation of the stiffness (among other parameters) experienced by the vehicle. Also, along its route, the Hyperloop will encounter...conference paper 2022
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Chumyen, P. (author), Connolly, D.P. (author), Woodward, P.K. (author), Markine, V.L. (author)Railway track transition zones are areas where there is a sudden change in the track-ground structure. They include changes between ballasted and slab track, bridge approaches, and tunnel entry/exits. They are often the location of rapid track deterioration, and therefore this paper investigates the use of auxiliary rails and soil improvement...journal article 2022
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Maassen, Denise (author)Many neighbourhoods that comprise the Western Garden Cities of Amsterdam are struggling with a low liveability. Their spacious layout however, offers great potential for densification within the city borders. My project, the Garden-Fresh City, shows an approach that both tackles issues with liveability and fulfills this densification potential...master thesis 2021
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Bolhuis, Remco (author)An important subject in the research on the behaviour of railway structures is the validation of numerical models by means of in-track measurements. Many forms of track measurements have taken place all over the world, mainly in the sense of strain and acceleration measurements, but a more unexplored area is that of the direct measurement of...master thesis 2021
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Smidt, Bas (author)This graduation arises from the urgent need to revitalize a problematic post-war neighbourhood in Amsterdam-West. There is a lack of places for residents to connect with each other and with their built environment. The zones between the private and public domain, the transition zones of the ‘General Expansion Plan’ aren’t enabling or encouraging...master thesis 2021