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Polder, R. (author), Peelen, W. (author)
This paper presents an overview of 30 years' experience with cathodic protection of steel in concrete in The Netherlands. Principles and practical aspects of CP and its design and installation are presented. Three phases have passed from the late 1980s until present: pioneering, development and maturity. In the first period CP was mainly applied...
conference paper 2018
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Polder, R.B. (author), van Put, M. (author), Peelen, W.H.A. (author)
Testing for the chloride threshold (also called critical chloride content) for corrosion initiation of steel in concrete has been found difficult and, at best, time consuming. Nevertheless, the chloride threshold is an important parameter in service life design of new structures and for evaluation of the remaining service life of existing...
conference paper 2017
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Peelen, W.H.A. (author), Vervuurt, A.H.J.M. (author)
Modular expansion joints constitute a substantial part of direct and indirect costs of bridge maintenance. Joint condition assessments can be improved to predict or detect damages earlier. In this way the probability for consequential damages such as emergency repair and a shortened lifespan is reduced. Maintenance can be planned well in advance...
conference paper 2017
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Luiten, G.T. (author), Peelen, W.H.A. (author), Drieman, R. (author)
conference paper 2016
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Luiten, G.T. (author), Peelen, W.H.A. (author), Drieman, R. (author)
The number of monitoring pilots in Dutch civil infrastructure with sensing systems is increasing only slowly over the last decade. To identify and help understand barriers for wider implementation of moni-toring systems, SBRCURnet-committee 1992 analysed 13 monitoring pilots. The committee consisted of 16 Dutch infrastructure owners,...
conference paper 2016
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Polder, R.B. (author), Angst, U.M. (author), Pacheco, J. (author), Peelen, W.H.A. (author)
Where exposed to an aggressive environment, concrete structures will develop reinforcement corrosion at some point in their life. Chloride ions from de-icing salt or sea water induce pitting corrosion. Local cross section reduction may occur relatively quickly and expansion due to corrosion products precipitating may crack and spall concrete...
conference paper 2016
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Peelen, W.H.A. (author), TNO Bouw en Ondergrond (author)
Invoering van AC tractie in Nederland en het bundelen van leidingen in leidingenstraten en -corridors, kan consequenties hebben op de AC en DC beïnvloeding van ondergrondse pijpleidingen, en naar mee op hun duurzaamheid. DC beïnvloeding heeft plaats, omdat het bestaande spoor of andere DC bronnen, lekstromen naar de bodem vertonen. Deze stromen...
conference paper 2006
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Peelen, W.H.A. (author), TNO Bouw en Ondergrond (author)
In prefab segmenten van de Groene Hart tunnel zijn sensoren ingebouwd voor het monitoren van aspecten van de levensduur. Corrosie-initiatie en -snelheid en elektrische
conference paper 2006
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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
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Shamalta, M. (author), Breunese, A.J. (author), Peelen, W.H.A. (author), Fellinger, J.H.H. (author), TNO Bouw en Ondergrond (author)
In this paper, the phenomenon of spalling of concrete in fire has been studied using a numerical model. Spalling is the violent or non-violent breaking off of layers or pieces of concrete when it is exposed to high temperatures as experienced in fires. The types and mechanisms of spalling have been explained. A numerical model has been developed...
conference paper 2005
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Polder, R.B. (author), Peelen, W.H.A. (author), TNO Bouw (author)
This paper describes the effects of stray currents on durability and reinforcement corrosion of underground concrete structures. Cathodic protection of underground pipelines are stationary sources of stray current interference with concrete, and rail traction systems are non-stationary sources. The soil is the electrolyte that conducts stray...
conference paper 2003
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Peelen, W.H.A. (author), Polder, R.B. (author), TNO Bouw (author)
conference paper 2003
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Peelen, W.H.A. (author), Polder, R.B. (author), TNO Bouw (author)
The throwing power of the Zinc-Hydrogel Anode for sacrificial protection of steel in concrete was studied in the laboratory under controlled environments. The anode to steel ratio in the specimens was 1. The corrosion state of the rebar is moderate. The results indicate that for a concrete resistivity of 600 Qm and higher the ohmic drop in the...
conference paper 2002
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Polder, R.B. (author), Peelen, W.H.A. (author), Bertolini, L. (author), Guerriere, M. (author), TNO Bouw (author)
Concrete specimens with various binders including Portland cement, fly ash, blast furnace slag and composite cement and three water-to-cement ratios were subjected to cyclic wetting with salt solution and drying. Specimens contained six mild steel bars at two cover depths and two activated titanium reference electrodes. After salt loading for...
conference paper 2002
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