Searched for: subject:"Monitoring"
(1 - 10 of 10)
document
Peelen, W.H.A. (author), Polder, R.B. (author), TNO Bouw (author)
The new Dutch railway line the 'Betuweroute' crosses the main gas pipeline system of the 'Gasunie', the main Dutch gas distributor, at 7 locations. To ensure a safe operation of both the railway line and the pipeline system, it is essential to guarantee the mechanical stability of the gas pipes in the soft soil; therefore at several locations...
conference paper 2004
document
Polder, R.B. (author), Peelen, W.H.A. (author), Klinghoffer, O. (author), Eri, J. (author), Leggedoor, J. (author), TNO Bouw en Ondergrond (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
Polder, R.B. (author), Peelen, W.H.A. (author), Leegwater, G. (author), TNO Bouw en Ondergrond (author)
Since about 1980 Corrosion Monitoring Systems have been used in many concrete structures in aggressive environmentworldwide. While these systemswork properly in aboveground environment, some questions have arisen for submerged conditions, e.g. the outer sides of tunnels, piers in seawater or foundations in wet soil. One question concerns macro...
bookPart 2008
document
Peelen, W.H.A. (author), Neeft, E.A.C. (author), Leegwater, G. (author), van Kanten-Roos, W. (author), Courage, W.M.G. (author)
Steel structures near DC powered railways are expected to be affected by stray current interference. This causes accelerated corrosion rates. Therefore steel is often not used as a building material in these cases, although certain advantages over the alternative material concrete exist. These advantages can include amongst others costs, shorter...
article 2011
document
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
document
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
document
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
document
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
document
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
document
Pasma, W. (author), Peelen, L.M. (author), van Buuren, S. (author), van Klei, W.A. (author), de Graaff, J.C. (author)
article 2020
Searched for: subject:"Monitoring"
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