Searched for: author%3A%22Polder%2C+R.B.%22
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Polder, R.B. (author), Pan, Y. (author), Courage, W.M.G. (author), Peelen, W.H.A. (author)
Maintenance costs of reinforced concrete infrastructure (bridges, tunnels, harbours, parking
article 2016
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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), Geiker, M.R. (author)
Chloride induced reinforcement corrosion is increasing due to aging of concrete infra structure. Conventional repairs have poor durability and many fail after less than 10 years. For conven tional repair chloride contaminated concrete is removed, steel is cleaned and new concrete is applied. Leaving chiorides, eg. in pits, corrosion may re...
conference paper 2015
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Yang, Z. (author), Fischer, H. (author), Polder, R.B. (author)
In this paper, two types of modified hydrotalcites (MHT) were incorporated into cement mortars with two dosage levels (replacing 5% and 10% cement by mass). Designated testing programme including strength test, porosity test, and rapid chloride migration and diffusion test were employed to investigate the effect of modified hydrotalcites on...
article 2015
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van den Hondel, H. (author), Klamer, E.L. (author), Gulikers, J. (author), Polder, R.B. (author)
Die oberste niederländische Straßen- und Wasserbaubehörde (Rijkswaterstaat) hat im Hinblick auf die langfristige Instandhaltung ihrer Infrastruktureinrichtungen über 1500 Endverankerungsbereiche von Spannbetonbrückenträgern instandgesetzt und einer kathodischen Korrosionsschutzbehandlung (KKS) unterzogen. Die Endbereiche wiesen mäßige bis starke...
article 2015
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Polder, R.B. (author)
In Nederland bestaat al ruim 25 jaar ervaring met kathodische bescherming (KR) van wa pening in beton. Over de jaren is gebleken dat dit een betrouwbare methode is die corrosie stopt, mits voldoende aandacht aan ontwerp, uitvoering en onderhoud wordt besteed. Re cent is KR toegepast op ruim 30 snelwegviaducten. Aan de techniek van KR en de...
article 2015
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Souza, L.M.S. (author), Copuroglu, O. (author), Polder, R.B. (author)
Alkali-Silica Reaction (ASR) is a durability problem that affects numerous concrete structures woridwide. As the reaction progresses. it might lead to deleterious expansion and cracking. The addition of lithium into fresh concrete is already acknowledged as a preventive method. In existing structures, however, lithium would need to be driven...
conference paper 2015
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Polder, R.B. (author)
report 2015
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Polder, R.B. (author), Leegwater, G.A. (author), Worm, D.T.H. (author), Courage, W.M.G. (author)
Cathodic protection (CP) of reinforcing steel has been applied successfully to concrete structures with corrosion damage for more than 25 years. Performance and maintenance data are reported from an inventory of CP systems in The Netherlands installed on about 100 structures between 1987 and 2010. The large majority provides corrosion protection...
article 2014
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Polder, R.B. (author), Peelen, W.H.A. (author)
This paper reviews 25 years of experience with cathodic protection of steel in concrete in The Netherlands. Three phases have passed from the late 1980s until present: pioneering, development and maturity. In the first period CP was mainly applied to precast elements corroding due to mixed in chlorides. The parties involved worked together to...
bookPart 2014
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Pacheco, J. (author), Savija, B. (author), Schlangen, E. (author), Polder, R.B. (author)
The influence of concrete cracking upon reinforcement corrosion is complex. Cracks allow fast penetration of chlorides, potentially leading to a shorter initiation period of reinforcement corrosion. Structural regulations control acceptable crack width values based on the exposure class of the structure. These regulations are limited to crack...
bookPart 2014
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Yang, Z. (author), Fischer, H. (author), Polder, R.B. (author)
Owing to the unique molecular structure and high ion exchange capacity, hydrotalcites are believed to have a potential to be modified and tailor-made as an active component of concrete. In this paper, two types of modified hydrotalcites (MHT-pAB and MHT-NO2) were incorporated into cement mortars with two dosage levels (replacing 5% and 10%...
bookPart 2014
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Pacheco, J. (author), Šavija, B. (author), Schlangen, E. (author), Polder, R.B. (author)
The durability of cracked reinforced concrete is a serious concern in the construction industry. Cracks represent fast routes for chloride penetration, which can result in reinforcement corrosion. Bending or tapered cracks have the characteristic of being wider at the surface and becoming narrower towards the reinforcement. In reinforced...
article 2014
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Angst, U.M. (author), Polder, R.B. (author)
The concept of variability is increasingly considered in service life predictions. This paper reports experimental data on the spatial distribution of chloride in uncracked concrete subjected to homogeneous exposure. Chloride concentrations were measured with potentiometric sensors embedded in concrete exposed to chloride ingress by cyclic...
article 2014
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Klamer, E. (author), Gulikers, J. (author), van den Hondel, H. (author), Polder, R.B. (author)
Rijkswaterstaat heeft in het kader van onderhoud aan haar kunstwerken ruim 1500 koppen van voorgespannen liggers in circa 30 viaducten gerepareerd en voorzien van kathodische bescherming (KB). De liggerkoppen vertoonden matige tot zware schade als gevolg van wapeningscorrosie door het indringen van chloriden, waardoor het noodzakelijk was in te...
article 2014
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Yang, Z. (author), Fischer, H.R. (author), Polder, R.B. (author)
Two modified hydrotalcites (MHTs) intercalated with nitrate and aminobenzonate anions, (i.e., CaAl-MHT-NO3 and CaAl-MHT-pAB) have been synthesized. The intercalation of CaAl-MHT-pAB was achieved by anion exchange of nitrate in the host material, CaAl-MHT-NO3, which was prepared by a coprecipitation method. Materials characterization was...
article 2014
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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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Souza, L.M.S. (author), Copuroglu, O. (author), Polder, R.B. (author)
Alkali-silica reaction (ASR) is one of the major durability problems in concrete and affects many structures worldwide. Nevertheless, currently, there are no definite treatments to stop it once it has star ted. Lithium is known to have beneficial effects on ASR. Indeed, the use of lithium-based admixtures has been acknowledged as a preventive...
bookPart 2014
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Blom, K. (author), Groeneweg, T. (author), van Hulst, H. (author), Polder, R.B. (author), de Vries, H. (author)
Betonconstructies worden niet alleen ouder; het aantal dat een respectabele leeftijd bereikt, neemt de komende decennia zelfs drastisch toe. Er is dus veel kennis nodig ten behoeve van onderhoud, reparatie en eventuele vervanging van grote aantallen betonconstructies, mede onder invloed van sterk veranderende gebruikseisen. De huidige praktijk...
article 2014
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