- document
- Polder, R.B. (author), Peelen, W.H.A. (author), TNO Bouw en Ondergrond (author) conference paper 2008
- document
-
de Rooij, M.R. (author), Polder, R.B. (author), TNO Bouw (author)Nowadays important concrete infrastructure is increasingly being designed for long service life by modelling of degradation and probabilistic assessment of uncertainties, e.g. using the DuraCrete method. Although on paper a reliable and durable structure will result, it is the execution phase that can make or break the service life approach....conference paper 2007
- document
- de Rooij, M.R. (author), Polder, R.B. (author), TNO Bouw (author) conference paper 2007
- document
- Polder, R.B. (author), TNO Bouw (author) conference paper 2007
- document
- Vervuurt, A.H.J.M. (author), Polder, R.B. (author), TNO Bouw en Ondergrond (author) public lecture 2007
- document
-
Peelen, W.H.A. (author), Polder, R.B. (author), Leegwater, G. (author), TNO Bouw (author)Important concrete infrastructure is increasingly being designed for long service life. This is done by modelling of degradations and probabilistic assessment of uncertainties, e.g. using the DuraCrete method. In the design phase, this is necessarily based on past experience, simplified modelling and limited testing. Installing monitoring...conference paper 2007
- document
-
Martínez, I. (author), Andrade, C. (author), Vennesland, O. (author), Evensen, U. (author), Polder, R.B. (author), Leggedor, J. (author), TNO Bouw en Ondergrond (author)It is well known that cathodic protection is the most useful method for stopping corrosion when the deterioration process has started, but the most important issue that is still missing in the cathodic protection studies is how to check its efficiency in a reliable way. This paper presents results of the protection efficiency obtained in...article 2007
- document
-
TNO Bouw en Ondergrond (author), Nijland, T.G. (author), Larbi, J.A. (author), de Rooij, M.R. (author), Polder, R.B. (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
-
TNO Bouw en Ondergrond (author), de Rooij, M.R. (author), Polder, R.B. (author), van Oosten, H.H. (author)Nowadays important concrete infrastructure is increasingly being designed for long service life by probabilistic assessment of uncertainties, e.g. using the DuraCrete method. Although on paper a reliable and durable structure will result, it is the execution phase that can make or break the service life. Hence, testing the concrete for its...article 2007
- document
-
TNO Bouw en Ondergrond (author), Polder, R.B. (author), Peelen, W.H.A. (author), Klinghoffer, O. (author), Eri, J. (author), Leggedoor, J. (author)Reinforced concrete is a cost effective material used widely in our infrastructure. The durable combination of steel and concrete provides safety and serviceability. Normally, the physics and chemistry of concrete protects reinforcing steel against corrosion. Over time this protection can be lost due to aggressiveness from the environment, for...article 2007
- document
-
TNO Bouw en Ondergrond (author), Polder, R.B. (author), Larbi, J.A. (author)Explosive spalling of pieces of concrete from the heated surface is considered to be the most dangerous effect of damage of concrete subjected to intense fire attack, especially when it occurs in restricted areas such as underground tunnels. Recent investigations have revealed that the amount of explosive spalling and the extent of cracking can...article 2007
- document
- Peelen, W.H.A. (author), Polder, R.B. (author), TNO Bouw en Ondergrond (author) article 2006
- document
- Schuten, G. (author), Leggedoor, J. (author), Polder, R.B. (author), Peelen, W.H.A. (author), TNO Bouw (author) bookPart 2006
- document
- Polder, R.B. (author), Peelen, W.H.A. (author), Leggedoor, J. (author), Schuten, G. (author) bookPart 2006
- document
- Polder, R.B. (author), TNO Bouw en Ondergrond (author) conference paper 2006
- document
- Polder, R.B. (author), Krom, A.H.M. (author), Peelen, W.H.A. (author), Wessels, J.F.M. (author), TNO Bouw en Ondergrond (author) article 2006
- document
-
Peelen, W.H.A. (author), Krom, A.H.M. (author), Polder, R.B. (author), TNO Bouw en Ondergrond (author)Steel is a cost-effective and durable building material. Corrosion is one of the major degradation mechanisms of steel structures, also for underground structures like sheet pile walls. Traction currents leaking into the ground (called stray currents here) and interfering with the structure can cause increased corrosion rates, and wall thickness...conference paper 2006
- document
- de Rooij, M.R. (author), Polder, R.B. (author), van den Breugel, K. (author), TNO Bouw en Ondergrond (author) conference paper 2006
- document
-
Polder, R.B. (author), Peelen, W.H.A. (author), TNO Bouw en Ondergrond (author)Reinlorced concrete is a very cost elfective construction material, used for a large part of the world's physícal ínfrastructure. The durable collaboration between steel and concrele is essential for its safe and serviceable funclioning. Normally, the physícal and chemÍcal nature of concrete protects the ernbedded reinforcing steel against...conference paper 2006
- document
-
Polder, R.B. (author), TNO Bouw en Ondergrond (author)Most of the currently used models to predict chloride ingress a constant diffusion coefficient over time. However, a reduction of the diffusion coefficient over time, is ob-served at specimens that are exposed to chlorides. This reduction of the diffusion coefficient is expressed with the ageing coefficient. In the past, ageing coefficients were...conference paper 2006