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Rossi, E. (author), Zhang, H. (author), Nijland, T.G. (author), Copuroglu, O. (author), Polder, R.B. (author), Savija, B. (author)
An important input parameter for numerical models that simulate cracking of the concrete cover due to reinforcement corrosion is the Elastic modulus of corrosion product (Ecp). Despite its relevance, Ecp is subject of significant variations according to the values reported in the literature, which vary from less than 100 MPa up to 360 GPa....
conference paper 2021
document
Russo, N. (author), Rossi, E. (author), Nijland, T.G. (author), Polder, R.B. (author), Lollini, F. (author)
The durability design of reinforced concrete structures has been recently included in the main national and international design codes, and it is aimed at corrosion prevention of steel reinforcement during the designed service life. Therefore, since the design stage, it is of fundamental importance to correctly assess the temporal evolution of...
conference paper 2021
document
Rossi, E. (author), Zhang, H. (author), Garcia, S.J. (author), Bijleveld, J. (author), Nijland, T.G. (author), Copuroglu, O. (author), Polder, R.B. (author), Savija, B. (author)
The elastic modulus of corrosion product (Ecp) has been reported with significant variations in the literature. This study aims to investigate the Ecp of naturally-generated chloride-induced corrosion products formed in different concrete mixes. Microstructural characterization was conducted through nano-indentation, electron microscopy and...
article 2021
document
Russo, N. (author), Lollini, F. (author), Rossi, E. (author), Nijland, T.G. (author), Polder, R.B. (author)
article 2021
document
Rossi, E. (author), Polder, R.B. (author), Copuroglu, O. (author), Nijland, T.G. (author), Saviuja, B. (author)
Although reinforcement corrosion is a well-known issue, which are the locations of the steel/concrete interface most sensitive to pitting corrosion is still an unclear issue. In this study, X-ray computed tomography is used to characterize eight 20-years-old reinforced concrete cores naturally deteriorated due to chloride-induced corrosion. The...
article 2020
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Russo, N. (author), Rossi, E. (author), Garcia, S. (author), Bijleveld, J. (author), Nijland, T.G. (author), Polder, R.B. (author), Lollini, F. (author)
Service life of reinforced concrete structures is usually limited to initiation of corrosion, whilst in practice corrosion in many structures is already in the propagation stage. To better understand the processes that leads to the cracking and detachment of concrete cover during this phase, the knowledge of corrosion products development in...
article 2020
document
Rossi, E. (author), Nijland, T.G. (author), Copuroglu, O. (author), Polder, R.B. (author), Savija, 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 this...
conference paper 2019
document
Polder, R.B. (author), Nijland, T.G. (author), de Rooij, M.R. (author), Larsen, C.K. (author), Pedersen, B. (author)
road environment in The Netherlands for nearly a century. The experience is good and structures with long service lives can be obtained, as has been shown by several field studies. This is caused by a high resistance against chloride penetration and a high electrical resistivity, demonstrated both in the field and in the laboratory. Due to the...
conference paper 2014
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Valcke, S.L.A. (author), Polder, R.B. (author), Nijland, T.G. (author), Leegwater, G.A. (author), Visser, J.H.M. (author), Bigaj-van Vliet, A.J. (author)
Most high filler concrete studies are based on relatively high contents of powder (cement + filler) (>400 kg m-3). This paper aims to increase the total fly ash content relative to the clinker content, while simultaneously minimizing the total powder content in the concrete to values lower than 300 kg m-3. The motivation for decreasing the total...
article 2012
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Valcke, S.L.A. (author), Polder, R.B. (author), Nijland, T.G. (author), Leegwater, G.A. (author), Visser, J.H.M. (author), Bigaj-Van Vliet, A.A.J. (author)
The strength of concrete is linked to the amount of cement used. In many applications, concrete has a considerably higher strength than designed and structurally required. Lowering cement contents, thus reducing strength, significantly reduces the ecological impact of any concrete in terms of raw materials use and CO 2 output. A lower cement...
conference paper 2010
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Valcke, S.L.A. (author), Polder, R.B. (author), Nijland, T.G. (author), Leegwater, G.A. (author), Visser, J.H.M. (author), Bigaj-van Vliet, A.J. (author), TNO Bouw en Ondergrond (author)
conference paper 2010
document
Nijland, T.G. (author), Polder, R.B. (author), van Zon, Q.F. (author), TNO Bouw en Ondergrond (author)
public lecture 2009
document
Nijland, T.G. (author), Larbi, J.A. (author), de Rooij, M.R. (author), Polder, R.B. (author), TNO Bouw en Ondergrond (author)
Use of Rhenish trass in (historic) lime mortars is well known. However, its application to concrete has not been investigated elaborately. In the past, trass was used as a pozzolanic addition to concrete for marine structures in the Netherlands. Recent investigations of several structures have shown that identification of trass in aged concretes...
article 2007
document
Polder, R.B. (author), Nijland, T.G. (author), Peelen, W.H.A. (author), Bertolini, L. (author), TNO Bouw (author)
Cathodic protection has proven to be a reliable and economic method to stop corrosion in reinforced concrete structures. Many systems with activated titanium mesh anode embedded in cementitious mortar have functioned for more than 10 years. The service life depends on the anode/overlay system, which may be determined mainly by acid production...
conference paper 2002
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