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Van den Bos, J.P. (author)
Results of labtests on reflection and transmission trough a vertical permeable breakwater for the purpose of validating mathematical models. In the laboratory a model of a vertical, permeable breakwater was constructed with elastocoast and tests were done with regular and irregular waves.
report 2014
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Lantsoght, E.O.L. (author)
The compressive strength of concrete decreases as an element is subjected to cycles of loading. In a typical fatigue test for the concrete compressive strength, a concrete specimen (typically a cylinder) is loaded between a lower and upper stress limit. These limits are expressed as a fraction of the concrete compressive strength, and can be...
report 2014
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Hoogendoorn, S.P. (author), Immers, L.H. (author), Van Katwijk, R. (author), Knoop, V.L. (author), Schuurman, H. (author), Taale, H. (author), Wilmink, I.R. (author)
report 2014
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Steenbergen, M.J.M.M. (author)
Publicatie gemaakt in het kader van de samenwerking tussen de Tweede Kamer, de KNAW, NWO, VNSU en de Jonge Akademie.
report 2014
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Lendering, K.T. (author), Jonkman, S.N. (author), Kok, M. (author)
Floods in the summer of 2013 in Central Europe demonstrated once again that floods account for a large part of damage and loss of life caused by natural disasters. During flood threats emergency measures, such as sand bags and big bags, are often applied to strengthen the flood defences and attempt to prevent breaches. Although these measures...
report 2014
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Erkens, S.M.J.G. (author), Van Dommelen, A.C. (author), Van Vliet, D. (author), Leegwater, G.A. (author)
Het zelfherstellend vermogen, of de healingscapaciteit, van asfaltmengsels wordt in de meeste ontwerpmethoden voor wegverhardingen meegenomen. De kennis over dit zelfherstellend vermogen is gebaseerd op ervaringen en onderzoeken uit het verleden en de werkelijke mechanismen erachter zijn niet bekend. Hierdoor is het moeilijk om voor nieuwe...
report 2014
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Trung, L.H. (author)
The study aims to establish a set of formulas estimating velocity and depth of overtopping flows at sea dikes including seaward-side slope, crest and landward-side slope. These formulas are applicable to flows which are generated by natural waves and the simulator giving associated characteristics of any arbitrary value of exceedance probability...
report 2014
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Verhagen, H.J. (author), Jansen, L. (author)
For describing the relation between the grainsize and the nominal diameter (d50 vs. dn50) usually a factor 0.84 is used. This factor has been derived by Laan [1981] "De relatie tussen vorm en gewicht van breuksteen (the relation between shape and weight of pieces of rock), report MAW-R-81079". However, this original report cannot be retrieved...
report 2014
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Zhao, G. (author), Visser, P.J. (author), Peeters, P. (author)
Embankment breaching is a composite process coupled by hydraulic processes and sediment transport processes. Erosion is the link in the interaction between breach flow and embankment material. Surface erosion starts in the initial breach phase and triggers the initial damage of the embankment. As the surface erosion develops completely, the...
report 2014
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Surmeli, A.N. (author), Ravenshorst, G.J.P. (author), Van de Kuilen, J.W.G. (author)
The current practice is that the deformations of timber façade elements are determined by testing, or they are limited by prescribing dimensions in a very conservative way. To use generic calculation models, suitable for almost all types of windows, approximations deviating from the actual behaviour have to be done. This paper investigates if a...
report 2013
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Pijpers, R.J.M. (author), Nieuwland, C. (author), Vorstenbosch, J. (author), Kolstein, M.H. (author)
report 2013
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Jansen, J.D. (author), Fonseca, R.M. (author), Kahrobaei, S. (author), Siraj, M. (author), Van Essen, G.M. (author), Van den Hof, P.M.J. (author)
The "Egg Model" is a synthetic reservoir model consisting of an ensemble of 101 relatively small three-dimensional realizations of a channelized reservoir produced under water flooding conditions with eight water injectors and four producers. It has been used in numerous publications to demonstrate a variety of aspects related to computer...
report 2013
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Sarkhosh, R. (author), den Uijl, J.A. (author), Walraven, J.C. (author)
Crack initiation, crack growth and time-dependency of the crack in unreinforced and reinforced concrete have been an interesting topic for decades. Parallel to the research on the ‘shear capacity of concrete beams under sustained loading’, in which the shear capacity of large-scale beams with longitudinal reinforcement under high sustained...
report 2013
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Verhagen, H.J. (author)
Example calculation of a dike height incorporating the uncertainty in the wave growth formula of Young and Verhagen.
report 2013
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Jonkman, S.N. (author), Van Ledden, M. (author), Lendering, K.T. (author), Mooyaart, L. (author), Stoeten, K.J. (author), De Vries, P. (author), Willems, A. (author), De Kort, R. (author)
The objective of this study is to provide suitable candidate solutions for a storm surge barrier in the Bolivar Roads as part of the Ike Dike system and provide recommendations for further research.
report 2013
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Sarkhosh, R. (author), den Uijl, J.A. (author), Braam, C.R. (author), Walraven, J.C. (author)
The experimental investigation concerns to the behaviour of plain concrete beams with a single notch under sustained loading. The notch is located at the bottom in the middle of the beam. In order to get insight into the short-term capacity of the beams, nine specimens were tested in short-term loading. The experimental program comprised four...
report 2013
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Verhagen, H.J. (author)
Waves can be measured in several ways. One way of measuring waves is by measuring the wave pressure at a certain depth using a pressure sensor and calculate the wave information from the pressure record. The EMS wave logger uses a Honeywell MLH 050 PGP 06A pressure sensor. The information is stored by the logger on a SD card. The software in the...
report 2013
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Jansen, J.D. (author)
This note describes the theory behind a simple Matlab program to generate ensembles of geological realizations of relatively small-scale reservoir models (permeability fields) for subsurface flow simulation. The algorithm makes use of Principal Component Analysis (PCA) to parameterize the spatial covariance of a reference image, and a Bayesian...
report 2013
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Groot, C.J.W.P. (author), Gunneweg, J. (author)
Het in september 2012 afgeronde ‘Onderzoek Aanpak Vochtproblematiek zwaar regenbelast historisch metselwerk gemetseld in kalkmortels’, beoogde de kennisleemten op te vullen die bij een eerder verkennende onderzoek naar de ernstige vochtproblematiek bij bakstenen molenrompen (onderzoek 2000-2002), waren vastgesteld. Deze problemen bleken zich...
report 2013
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Rietveld, L.C. (author), Van Lier, J.B. (author)
report 2012
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