Searched for: collection%3Air
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Gao, P. (author)
For optimization of the use of Supplementary Cementitious Materials (SCMs), i.e. blast furnace slag (BFS) and fly ash (FA), in cementitious system a numerical model for simulating the hydration and microstructure development of blended cements can be used. Several models have been proposed in recent years to simulate the hydration and...
doctoral thesis 2018
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Nienhuis, J. (author)
The different phases in the life of archaeological objects can be described by artefact biography. This dissertation defines an updated version: artefact biography 2.0, and the life phases of Early Iron Age bronze studs from Oss-Zevenbergen, the Netherlands, are elaborated. Throughout the thesis, the research revolves around information value....
doctoral thesis 2017
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Susanto, A. (author), Koleva, D.A. (author), van Breugel, K. (author), van Beek, C. (author)
This work reports on the development of microstructural and mechanical properties of mortar cubes under the synergetic action of stray current and various environmental/curing conditions. The study refers to specimens cured for 24h only, followed by a 112 days period of partial or full submersion in water or alkaline medium. Additionally,...
journal article 2017
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Susanto, A. (author), Peng, G (author), Koleva, D.A. (author), van Breugel, K. (author)
Stray current is an electrical current “leakage” from metal conductors and electrical installations. When it flows through cement-based materials, electrical energy is converted to thermal energy that causes increasing temperature due to Joule heating phenomena. The aim of this paper is to shed light on the influence of electrical current flow...
journal article 2017
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Martinez Lombardia, Esther (author), Lapeire, Linsey (author), Maurice, Vincent (author), De Graeve, Iris (author), Klein, Lorena (author), Marcus, Philippe (author), Verbeken, Kim (author), Kestens, L.A.I. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author), Terryn, H.A. (author)
When aiming for an increased and more sustainable use of metals a thorough knowledge of the corrosion phenomenon as function of the local metal microstructure is of crucial importance. In this work, we summarize the information presented in our previous publications[1-3] and present an overview of the different local (electrochemical) techniques...
journal article 2017
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Nahar, S.N. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Schitter, G (author), Scarpas, Athanasios (author)
Self-healing of bitumen is a property that positively contributes to the sustainability, maintenance requirements and cost effectiveness of asphalt pavements. Ideally one would like to design an asphalt mix with a well-defined healing potential. Although substantial research efforts have been dedicated to the healing mechanism in bitumen,...
conference paper 2016
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Nahar, S.N. (author)
During the service life of flexible asphalt pavements, asphalt concrete degrades due to traffic loading and environmental conditions like temperature, rain, oxidation, ultraviolet-radiation from the sun. All these environmental factors have adverse effects on the performance of bitumen, which is the binder of asphalt concrete. They are known to...
doctoral thesis 2016
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Xu, X. (author)
The thesis attempts to develop advanced high abrasion resistant steels with low hardness in combination with good toughness, processability and low alloying additions. For this purpose, a novel multi-pass dual-indenter (MPDI) scratch test approach has been developed to approach the real continuous abrasion process and unravel abrasion damage...
doctoral thesis 2016
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Amirthalingam, M. (author), Van der Aa, E.M. (author), Kwakernaak, C. (author), Hermans, M.J.M. (author), Richardson, I.M. (author)
The partitioning behaviour of carbon, phosphorous and boron during the solidification of a resistance spot weld pool was studied using experimental simulations and a phase field model. Steels with varying carbon, phosphorous and boron contents were designed and subjected to a range of resistant spot welding thermal cycles. Mechanical properties...
journal article 2015
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Hofko, B. (author), Eberhardsteiner, L. (author), Fussl, J. (author), Grothe, H. (author), Handle, F. (author), Hospodka, M. (author), Grossegger, D. (author), Nahar, S.N. (author), Schmets, A.J.M. (author), Scarpas, A. (author)
As a widely accepted concept, bitumen consists of four fractions that can be distinguished by their polarity. Highly polar asphaltene micelles are dispersed in a viscous phase of saturates, aromatics and resins (maltene phase). Different concentrations of asphaltenes in the bitumen result in a range of mechanical response properties. In an...
journal article 2015
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Van Breugel, K. (author), Van Tuan, N. (author)
conference paper 2014
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Zlopasa, J. (author), Koenders, E.A.B. (author), Picken, S.J. (author)
Curing is the process of controlling the rate and extent of moisture loss from the surface of cement based materials. It is the final stage in the production of cement-based materials and it is the essential part for achieving continuous hydration of cement, while avoiding cracking due to drying shrinkage. Continuous cement hydration also...
conference paper 2014
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Susanto, A. (author), Koleva, D.A. (author), Van Breugel, K. (author), Koenders, E.A.B. (author)
Stray current is essentially an electrical current “leakage” from metal conductors and electrical installations. When it flows through cement-based systems, electrical energy is converted to thermal energy that causes increasing temperature due to Joule heating phenomena. The aim of this paper is to shed light on the influence of electrical...
conference paper 2014
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Pauli, A.T. (author)
As a contribution to the development of mutli-scale multi-physics approaches to modelling pavement performance, the present thesis considers the topic of damage accumulation accompanied by damage recover self-healing of the bituminous asphalt phase of pavement systems. It is found insightful that by adopting Hveem’s [1943] concept of attributing...
doctoral thesis 2014
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Popovich, V.A. (author)
Due to pressure from the photovoltaic industry to decrease the cost of solar cell production, there is a tendency to reduce the thickness of silicon wafers. Unfortunately, wafers contain defects created by the various processing steps involved in solar cell production, which significantly reduce the strength of the wafers and cells. Therefore, a...
doctoral thesis 2013
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Ohms, C. (author)
Welding is applied in many industrial sectors to join components, and has become an important manufacturing process because it enables the fabrication of structures that could not otherwise be constructed. Weld regions have inhomogeneous microstructures and are more susceptible to crack initiation and crack propagation than the surrounding base...
doctoral thesis 2013
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Ma, Y. (author)
Alkali activated fly ash (AAFA), also named “geopolymer”, has emerged as a novel engineering material in the construction industry. This material is normally formed by the reaction between fly ash and aqueous hydroxide or alkali silicate solution. With proper mix design, AAFA can present comparable or superior engineering properties to Portland...
doctoral thesis 2013
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Susanto, A. (author), Koleva, D.A. (author), Van Beek, C. (author), Van Breugel, K. (author)
Well known is that stray electrical current i.e. current with a spatial distribution in any conductive environment, can affect civil structures, e.g. initiate or enhance steel corrosion or affect microstructural and mechanical properties of the cement-based bulk matrix. While the former is related to polarization effects in conditions of current...
conference paper 2013
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Wang, Y. (author)
Concrete is one of the most important construction materials in the world. However, Portland cement which is one of the constituents of concrete is responsible for about 5-10% of global CO2 emission. From sustainability point of view, therefore, it is important to search for materials which can be used to reduce or to replace Portland cement in...
doctoral thesis 2013
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Pauli, A. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Varveri, K. (author), Scarpas, A. (author)
Bituminous materials form a class of materials that possess the intrinsic ability to selfheal. This self-healing capability is evidenced by the observation that the service life of these materials ‘in the field’ exceeds the service life as predicted by standard mechanical laboratory tests. This mismatch between laboratory prediction and field...
conference paper 2013
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