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Copuroglu, O. (author)Blast furnace slag cement concrete is used extensively in a number of countries. In comparison with OPC, it is particularly well known for its excellent performance in marine environments. One dis-advantage of slag cement is its vulnerability to scaling under the combined load of freezing-thawing and de-icing salts. The current investigation was...doctoral thesis 2006
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- Koleva, D.A. (author), Copuroglu, O. (author), Van Breugel, K. (author), De Wit, J.H.W. (author) journal article 2006
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- Koleva, D.A. (author), Copuroglu, O. (author), Van Breugel, K. (author), De Wit, J.H.W. (author) journal article 2008
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Schlangen, H.E.J.G. (author), Copuroglu, O. (author)It is generally possible to consider modeling of ASR damage in concrete in two main groups: modeling of gel formation and its expansion; modeling of ASR related damage. In this paper, authors take an attempt to combine both: simulating the correct crack formation and the connected concrete expansion. It is aimed to simulate ASR damage in a...conference paper 2010
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Sisomphon, K. (author), Copuroglu, O. (author), Fraaij, A. (author)This paper studies the potential of using expanded clay lightweight aggregate impregnated with sodium monofluorophosphate (Na2FPO3) solution which is eventually encapsulated by a cement paste layer to produce a self-healing system in blast furnace slag cement mortars. It was found that the technique significantly improved the quality of the...journal article 2011
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- Sisomphon, K. (author), Copuroglu, O. (author), Koenders, E.A.B. (author) conference paper 2011
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- Ahmad, B. (author), Copuroglu, O. (author) conference paper 2011
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Anac, C. (author), Esposito, R. (author), Copuroglu, O. (author), Schlangen, H.E.J.G. (author), Hendriks, M.A.N. (author)This paper outlines a project (namely PAT-ASR) which entails the development of a multi scale material performance assessment model on simulation of alkali silica reaction deployment and its effects on concrete durability. Performance models require a multi scale approach from micro (namely reaction chemistry) to macro level studies (namely...conference paper 2012
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Akbarnejad, S. (author), Copuroglu, O. (author), Houben, L.J.M. (author), Molenaar, A.A.A. (author)In congested areas around the world, traffic has significantly grown beyond expectation both in terms of volume and weight. Any hinder to the traffic causes severe delays resulting not only in economic loss but also in extra pollution of the environment. Therefore, maintenance works are desired to be reduced as much as possible. Application of...conference paper 2012
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Heinemann, H.A. (author), Copuroglu, O. (author), Nijland, T.G. (author)Before the general acceptance of Portland cement as the main binder for concrete in the late 19th century, other, locally available binders were occasionally used. In the case of the Netherlands, which did not produce Portland cement, traditional lime-based binders were not uncommon. With a strong tradition of trass production, trass-lime...conference paper 2012
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Susanto, A. (author), Koleva, D.A. (author), Copuroglu, O. (author), Van Beek, C. (author), Van Breugel, K. (author)Corrosion in reinforced concrete structures is not only induced by the penetration of aggressive substances (e.g. chlorides and/or CO2) but also influenced by stray currents. Further, the degradation mechanisms in reinforced cement-based systems due to the combined effect of stray current and chloride penetration have been a serious problem in...conference paper 2012
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Zemskov, S.V. (author), Ahmad, B. (author), Copuroglu, O. (author), Vermolen, F.J. (author)In the current research, a mathematical model for the post-damage improvement of the carbonated blast furnace slag cement (BFSC) exposed to accelerated carbonation is constructed. The study is embedded within the framework of investigating the effect of using lightweight expanded clay aggregate, which is incorporated into the impregnation of the...journal article 2013
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Susanto, A. (author), Koleva, D.A. (author), Copuroglu, O. (author), Van Beek, C. (author), Van Breugel, K. (author)This investigation presents a comparative study on mechanical properties, electrical resistivity and microstructure of mortar under DC current, compared to mortar in rest (no current) conditions. Monitoring was performed from 24h after casting until 84 days of cement hydration. A current density level of 10 mA/m2 was chosen as a simulation...journal article 2013
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Zemskov, S.V. (author), Copuroglu, O. (author), Vermolen, F.J. (author)A mathematical model for the post-damage recovery of carbonated cement is described. The model is based on a two-dimensional initial-boundary value problem for a system of partial differential equations. The study is embedded within the framework of investigating the effect of using lightweight expanded clay aggregate, which is incorporated into...conference paper 2013
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Zemskov, S.V. (author), Copuroglu, O. (author), Vermolen, F.J. (author)A mathematical model for the post-damage recovery of carbonated cement is described. The model is based on a two-dimensional initial-boundary value problem for a system of partial differential equations. The study is embedded within the framework of investigating the effect of using lightweight expanded clay aggregate, which is incorporated into...conference paper 2013
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Pargar, F. (author), Koleva, D.A. (author), Copuroglu, Oguzhan (author), Koenders, E.A.B. (author), van Breugel, K. (author)The stability of chloride ion selective electrodes in highly alkaline solutions is an important aspect when reliability and feasibility within reinforced concrete applications are concerned. The sensitivity of these electrodes largely depends on the properties of the AgCl layer, including uniformity, porosity, orientation, thickness, etc. These...conference paper 2014
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Pargar, F. (author), Koleva, D.A. (author), Copuroglu, O. (author), Koenders, E.A.B. (author), van Breugel, K. (author)The level of free chloride concentration in reinforced concrete structures essentially determines the onset of steel corrosion initiation and further propagation. One of the well-known methods for monitoring free chloride concentration is using silver/silver chloride electrodes (Ag/AgCl). These electrodes are sensitive mainly to chloride ions...conference paper 2014
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Silva De Souza, L.M. (author), Polder, R.B. (author), Copuroglu, O. (author)Alkali-silica reaction (ASR) is one of the major deterioration mechanisms that affect numerous concrete structures worldwide. During the reaction, hydroxyl and alkali (sodium and potassium ) ions react with certain siliceous compounds in the aggregate, forming a hygroscopic gel. The gel absorbs water from the cement paste and swells, possibly...conference paper 2014
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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
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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