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Pasma, W. (author), Peelen, L.M. (author), van den Broek, S. (author), van Buuren, S. (author), van Klei, W.A. (author), de Graaff, J.C. (author)
Background: Intraoperative blood pressure has been suggested as a key factor for safe pediatric anesthesia. However, there is not much insight into factors that discriminate between children with low and normal pre-incision blood pressure. Our aim was to explore whether children who have a low blood pressure during anesthesia are different than...
article 2020
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Pasma, W. (author), Peelen, L.M. (author), van Buuren, S. (author), van Klei, W.A. (author), de Graaff, J.C. (author)
article 2020
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Paulissen, J.H. (author), van Es, S.H.J. (author), Peelen, W.H.A. (author), Klatter, H.E. (author)
In this paper the budget prognosis and the technical end of service life issues of the transport infrastructure replacement program of Rijkswaterstaat are introduced. Furthermore the technical information required to execute the program in a cost-effective way while keeping the infrastructure safe and available is discussed. For fatigue and...
conference paper 2019
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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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Luiten, G.T. (author), Peelen, W.H.A. (author), Vega, E. (author)
Het aantal projecten in de civiele infrastructuur waarin het gedrag van constructies gemonitord wordt, groeit langzaam maar zeker. Dit zijn echter nog vaak unieke projecten, gebaseerd op het enthousiasme van pioniers in hun organisatie. Het is voor de meeste organisaties nog onduidelijk of monitoren voldoende toegevoegde waarde heeft en hoe ze...
article 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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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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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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van Loon, K. (author), Breteler, M.J.M. (author), van Wolfwinkel, L. (author), Rheineck Leyssius, A.T. (author), Kossen, A.S. (author), Kalkman, C.J. (author), van Zaane, B. (author), Peelen, L.M. (author)
Altered respiratory rate is one of the first symptoms of medical conditions that require timely intervention, e.g., sepsis or opioid-induced respiratory depression. To facilitate continuous respiratory rate monitoring on general hospital wards a contactless, non-invasive, prototype monitor was developed using frequency modulated continuous wave...
article 2016
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Pahlavan, P.L. (author), Pijpers, R.J.M. (author), Hakkesteegt, H.C. (author), Jansen, T.H. (author), Peelen, W.H.A. (author)
Fatigue, as the governing degradation mechanism in steel bridge decks, can lead to non-inspectable cracks under the welded intersections of stiffeners to the deck plate. As a result, estimation of the remaining service life and optimization of the maintenance program of steel bridge decks become a great challenge. A comprehensive structural...
conference paper 2015
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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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Peelen, W.H.A. (author), Mookhoek, S.D. (author)
Omdat Asset Management steeds belangrijker wordt, heeft TNO een Road Map opgesteld waarin staat welke meet-, model- wn simulatietechnieken (MMS) in de toekomst voor goed Asset Management ontwikkeld moeten worden. Het doel is te komen tot hoogwaardige technologie voor de ondersteuning van beheer en onderhoudsbeslissingen van vitale delen van de...
article 2013
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Polder, R.B. (author), Peelen, W.H.A. (author), Raupach, M. (author), Reichling, K. (author)
This paper investigates the economic effects of full corrosion surveys of concrete structures. The background is that the existing concrete infrastructure is aging, while being exposed to aggressive influences, which increases the occurrence of corrosion and related concrete damage over time. The central proposition is that solely relying on...
article 2013
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Zuada Coelho, B.A. (author), Vervuurt, A.H.J.M. (author), Peelen, W.H.A. (author), Leendertz, J.S. (author)
Modular expansion joints are structures that are submitted to severe fatigue load conditions. This may lead to unexpected premature damage of the structure which, besides the economic cost of repair, may limit the regular service of the bridge. To better understand the dynamic behaviour of modular expansion joints, different over rolling tests...
article 2013
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Peelen, W.H.A. (author), Neeft, E.A.C. (author), Leegwater, G. (author), van Kanten-Roos, W. (author), Courage, W.M.G. (author)
Steel is discarded by railway owners as a material for underground structures near railway lines, due to uncertainty over increased corrosion by DC stray currents stemming from the traction power system. This paper presents a large scale field test in which stray currents interference of a sheet pile wall was monitored in realistic conditions....
conference paper 2012
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Peelen, W.H.A. (author), Vervuurt, A.H.J.M. (author), Zuada Coelho, B.E. (author), Leendertz, H. (author)
One of the existing modular expansion joints of the Martinus Nijhoff Bridge in the Netherlands was monitored with the purpose of extending its service life for on year until replacement in 2011. Based on an analysis of the failure mechanisms of this (type of) joint, strain gauges were used as sensors and applied at centre and crossbeams. Chosen...
public lecture 2012
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Peelen, W.H.A. (author), Vervuurt, A.H.J.M. (author), Zuada Coelho, B.A. (author), Leendertz, H. (author)
One of the existing modular expansion joints of the Martinus Nijhoff Bridge in the Netherlands was monitored with the purpose of extending its service life for on year until replacement in 2011. Based on an analyses of the failure mechanisms of this (type of) joint, strain gauges were used as sensors and applied at centre and crossbeams. Chosen...
public lecture 2012
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