- document
-
Rossi, E. (author), Nijland, Timo (author), Copuroglu, Oguzhan (author), Polder, R.B. (author), Šavija, B. (author)Although corrosion of reinforcement is a well-known issue for the construction industry, there are still open questions about some fundamentals of corrosion in reinforced concrete. These points include, among others, which are the most sensitive locations of the steel/concrete interface for pitting corrosion to initiate and to propagate. In...journal article 2019
- document
-
Silva de Souza, L.M. (author), Polder, R.B. (author), Copuroglu, Oguzhan (author)Electrochemical lithium migration has been suggested as repair technique for alkali-silica reaction affected concrete structure. In this method, an electric field is used to transport lithium into the material. Current studies have used anolyte solutions with various lithium salts at different concentrations. However, little has been said on...journal article 2018
- document
-
Holthuizen, Patrick (author), Copuroglu, Oguzhan (author), Polder, R.B. (author)In the Netherlands civil engineering structures, such as overpasses, bridges and tunnels are generally built using blast furnace slag cement (BFSC, CEM III/B) concrete, because of its high resistance against chloride penetration. Although the Dutch experience regarding durability performance of BFSC concrete has been remarkably good, its...conference paper 2018
- document
-
Troian, S (author), Grunewald, S. (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)The production of double-curved precast concrete elements for cladding or shell structures requires expensive CNC (computer numerical control)-milled formwork. As an alternative method, the innovative flexible mould for economically efficient and sustainable production of such elements is discussed in this paper. This method comprises the use of...conference paper 2018
- document
-
Justino de Lima, C.L. (author), Veer, F.A. (author), Copuroglu, Oguzhan (author), Nijsse, R. (author)Despite a large number of products developed from waste materials, most of them consist of non-transparent applications, partly because it is a challenge to get transparent materials at reasonable temperatures from these waste products. In this work, we produced transparent glass samples incorporating slag and fly ash into a phosphate glass...journal article 2018
- document
-
Justino de Lima, C.L. (author), Veer, F.A. (author), Copuroglu, Oguzhan (author), Nijsse, R. (author)The growth of the industrial production generates a high volume of waste materials. These products have a significant impact on the environment. Therefore, the valorization of industrial wastes, especially those produced in huge quantities, is an important social and ecological issue. Waste reuse and recycling could help to develop new...conference paper 2018
- document
-
Ma, X. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author), Han, Ningxu (author), Xing, Feng (author)External sulfate attack is a progressive degradation process that may cause expansion, cracking, loss of binder cohesion and increased permeability in cementitious materials. Crystallization pressure theory has often been referred to as the most likely mechanism. However, thus far the stress causing the expansion has not been quantified. In...journal article 2018
- document
-
Chaves Figueiredo, S. (author), Copuroglu, Oguzhan (author), Šavija, B. (author), Schlangen, E. (author)The use of fibres to enhance the ductility of cementitious composites has been extensively studied for the past few years. The addition of polymeric or metalic fibres with random orientation to the composite or even natural long and aligned fibres demonstrated a very successful reinforcement capable to reach a high mechanical performance....conference paper 2018
- document
-
Chen, Y. (author), Veer, F.A. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)In conventional concrete, replacing high-volume (more than 45%) of ordinary Portland cement (OPC) by supplementary cementitious materials (SCMs) is not a novel CO2 reduction method, whereas rarely in 3D printable concrete. This study attempts to explore the feasibility of using SCMs in 3D printable concrete. Initially, the existing binder mixes,...conference paper 2018
- document
-
Schipper, H.R. (author), Grunewald, S. (author), Troian, S. (author), Raghunath, P. (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)Expensive CNC (computer numerical controlled)-milled formwork is required for the production of double-curved precast concrete elements for cladding or shell structures. The innovative flexible mould method for economically efficient and sustainable production of such elements, developed at Delft University of Technology, comprises the use of a...conference paper 2017
- document
-
Tabakovic, A. (author), Braak, Dirk (author), van Gerwen, Mark (author), Copuroglu, Oguzhan (author), Post, W. (author), Garcia, Santiago J. (author), Schlangen, E. (author)This article presents development of a novel self-healing technology for asphalt pavements, where asphalt binder rejuvenator is encapsulated within the compartmented alginate fibres. The key objective of the study was to optimise the compartmented alginate fibre design, i.e., maximising amount of rejuvenator encapsulated within the fibre. The...journal article 2017
- document
-
Souza, Lourdes M.S. (author), Polder, R.B. (author), Copuroglu, Oguzhan (author)The currently available treatment techniques for concrete structures affected by alkali-silica reaction (ASR) are limited and electrochemical lithium migration has been proposed as an alternative. Lithium compounds have shown to have beneficial effects on ASR expansion when used as admixtures to fresh concrete. During the electrochemical...journal article 2017
- document
-
Chen, Y. (author), Veer, F.A. (author), Copuroglu, Oguzhan (author)Concrete is by volume the most widely used building material all over the world. The concrete industry emits large quantities of greenhouse gases. Therefore, developing low CO2 concrete becomes an urgent issue for those countries with significant concrete production and consumption. In recent years, 3D concrete printing (3DCP) which is a new...review 2017
- document
-
Tabakovic, A. (author), Post, W. (author), Cantero, D. (author), Copuroglu, Oguzhan (author), Garcia, Santiago J. (author), Schlangen, E. (author)This paper explores the potential use of compartmented alginate fibres as a new method of incorporating rejuvenators into asphalt pavement mixtures. The compartmented fibres are employed to locally distribute the rejuvenator and to overcome the problems associated with spherical capsules and hollow fibres. The work presents proof of concept of...journal article 2016
- document
-
Copuroglu, O. (author)Plane and crossed polarization are the two standard light modes in polarized light microscopy that are widely used to characterize crystalline and amorphous phases in cement-based materials. However, the use of the crossed polarized light mode has been found to be restrictive for studying birefringent phases quantitatively due to the extinction...journal article 2016
- document
-
Esposito, R. (author), Anac, C. (author), Hendriks, M.A.N. (author), Copuroglu, Oguzhan (author)The alkali-silica reaction (ASR) is an important problem that has yet to be completely understood. Owing to the complexity of this<br/>phenomenon, a number of studies have been conducted to characterize its kinetics, its impact on the material, and its structural consequences.<br/>This paper focuses on the deteriorating impact of ASR on concrete...journal article 2016
- document
-
Ma, X. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author), Han, N (author), Xing, F (author)External sulfate attack is one of the situations that may cause gradual but severe damage in cementitious materials, which may lead to cracking, increased permeability and strength loss. In this paper, thin-walled hollow cement paste cylinders with a wall thickness of 2.5mm were made considering the slow penetration process of sulfate ions under...conference paper 2016
- document
-
Mendonca Filho, F.F. (author), Pacheo, J. (author), Copuroglu, O. (author)Energy dispersive X-ray spectrometry (EDS) is a powerful tool for research studies on building materials. Elemental quantification in cementitious phases contained in the concrete microstructure can be performed at an excellent spatial resolution. However, accurate compositional quantification requires a standard-based analysis, whereas...conference paper 2015
- document
-
Kempl, J. (author), Copuroglu, O. (author)Blast Furnace Slag (BFS) is a waste product of industrial steel production and a common additive in the cement industry in Northern European countries. However, cementitious materials made from slag-rich cement, particularly CEM III /B, are very susceptible to carbonation. Recent investigations have shown that the surface application of aqueous...conference paper 2015
- document
- Copuroglu, O. (author) book 2015