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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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Polder, R.B. (author), Boutz, M.M.R. (author), Ottelé, M. (author)
Asset managers would benefit from knowing when to expect corrosion initiation in a particular reinforced concrete structure. However, accepted approaches to test existing structures for the remaining time to corrosion initiation are lacking. This paper proposes such an approach, based on experience in the field and additional considerations....
conference paper 2017
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Polder, R.B. (author), de Rooij, M.R. (author), Larsen, C.K. (author), Pedersen, B. (author)
Blast furnace slag cement (BFSC) has been used in reinforced concrete structures in marine and road environment in The Netherlands for nearly a century. Experience is good and long service lives can be obtained. In Norway experience with BFSC is scarce. In The Netherlands, a high resistance against chloride penetration and a high electrical...
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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Polder, R.B. (author)
This paper describes methods to assess concrete resistivity on site for various purposes related to corrosion and protection of reinforcement. It is based on a first draft of a RILEM Technical Recommendation. The electrical resistivity of concrete can be related to the two processes involved in corrosion of reinforcement: initiation (chloride...
conference paper 2000
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Schuten, G. (author), Leggedoor, J. (author), Polder, R.B. (author), TNO Bouw (author)
Corrosion of reinforcement in precast concrete ground floor elements containing mixed in chloride can cause considerable damage. This is a major problem in the Netherlands concerning a large number of privately owned houses. Conventional concrete repair is not acceptable because it does not provide sufficient durable safety. Cathodic protection...
conference paper 1999
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Polder, R.B. (author), de Vries, H. (author), TNO Bouw (author)
Penetration of de-icing salts into concrete bridge decks may cause corrosion of reinforcement. Hydrophobic treatment of concrete was studied as additional protection. It was shown that hydrophobic treatment strongly reduces chloride ingress, during semi-permanent contact and in wetting/drying situations. The protection remains effective for at...
conference paper 1999
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Polder, R.B. (author), Nerland, O.C. (author), TNO Bouw (author)
An experimental study of cathodic protection (CP) was carried out with a conductive primer anode applied to specimens from a concrete bridge. The bridge was demolished after 30 years of service due to severe delaminations and reinforcement corrosion. Four specimens of approximately 1 m2 each were made and characterised by steel potential,...
conference paper 1998
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