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Lantsoght, E.O.L. (author), van der Veen, C. (author), de Boer, A (author), Hordijk, D.A. (author)In the Netherlands, the shear capacity of a large number of existing reinforced concrete solid slab bridges is subject to discussion, as initial assessments indicated that their capacity was insufficient. In certain cases, the deterministic value of the moment capacity is larger than the deterministic value of the shear capacity. However, when...journal article 2016
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Lantsoght, E.O.L. (author), Yang, Y. (author), Tersteeg, R.H.D. (author), van der Veen, C. (author), de Boer, A (author)Proof loading of bridges is an option to study existing bridges when crucial information is lacking. When proof loading is chosen, the question arises which maximum load should be attained during the test to demonstrate sufficient capacity, and which criteria, the “stop criteria”, based on the measurements during the test, would indicate that...conference paper 2016
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Yang, Y. (author), van der Veen, C. (author), Hordijk, D.A. (author), de Boer, A. (author)Assessment of the capacity of the existing infrastructures has become more relevant in the recent years. With regard to the concrete bridges, the shear capacity of a large amount of existing concrete slab bridges reinforced with plain (smooth) bars are of concern. However, it was argued that the shear formula that is currently adapted in the...conference paper 2016
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Yang, Y. (author), Hordijk, D.A. (author), de Boer, A. (author)Proof loading has been considered as an effective approach in the assessment of existing concrete bridges. This paper presents a study of acoustic emission measurement in a proof loading of an ASR affected concrete slab bridge (Zijlweg bridge). Because of the uncertainty on the mechanical properties of the ASR affected concrete. The attenuation...conference paper 2016
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Yang, Y. (author), van der Veen, C. (author), Hordijk, D.A. (author), de Boer, A. (author)This paper presents an experimental research program aiming at assessing the current code provisions of vmin. A large test series was carried out, by varying the reinforcement ratio and loading conditions, the minimum average shear stress that can cause shear failure of a specimen with different depth, concrete strength is determined. The three...conference paper 2016
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Yang, Y. (author), Hordijk, D.A. (author), de Boer, A. (author)This paper presents the Acoustic Emission (AE) measurement of several tests carried out on reinforced concrete beams sawn from a 50 years old concrete bridge – Ruytenschildt bridge. The purpose of these tests is to provide additional information to the already executed in-situ load testing on the bridge. In addition to the AE measurement...conference paper 2016
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- Ensink, S.W.H. (author), van der Veen, C. (author), de Boer, A. (author) conference paper 2016
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Lantsoght, E.O.L. (author), van der Veen, C. (author), Walraven, J.C. (author), de Boer, A. (author)A 55-year-old bridge showed large cracking in the approach bridge caused by restraint of deformation and support settlement. After repair, it was uncertain at which crack width the traffic loads on the bridge should be further restricted. The shear capacity was calculated by counting on the aggregate interlock capacity of a supposedly fully...journal article 2016
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- de Boer, A.A. (author) master thesis 2015
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de Boer, G.J. (author), Baart, F. (author), Jagers, B (author), Becker, B.P.J. (author)Assessment of environmental status and integral safety requires combination of information from many sources, coming from either databases or increasingly via live model (scenario) simulations. Many of these models require input from one another, sometimes unidirectional, but more and more two-directional as well. Many protocols and frameworks...conference paper 2014
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de Boer, G.J. (author), Baart, F. (author), Bruens, A. (author), Damsma, T. (author), van Geer, P. (author), Grasmeijer, B. (author), den Heijer, C. (author), van Koningsveld, M. (author), Santinelli, G. (author)In 2003 various projects at Deltares and the TU-Delft merged their toolboxes for marine and coastal science and engineering into one toolbox, culminating in 2008 in an open source release, known as OpenEarthTools (OET). OpenEarth adopts the wikipedia approach to growth: web 2.0 crowd sourcing. All users are given full write access to help...conference paper 2012
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- van Vliet, A.B. (author), de Boer, A. (author), van Dooren, F. (author), Glas, A. (author), Kolstein, H.M. (author), Leendertz, H. (author), Maljaars, J. (author) report 2011
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- Hulsman, M. (author), Unadkat, HV (author), Cornelissen, Kamiel (author), de Boer, Jan (author), Reinders, M.J.T. (author) poster 2011
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Slot, E. (author), Wieland, M.J. (author), de Boer, G. (author), Kruit, P. (author), Ten Berge, G.F. (author), Houkes, A.M.C. (author), Jager, R. (author), Van de Peut, T. (author), Peijster, J.J.M. (author), Steenbrink, S.W.H.K. (author)MAPPER Lithography is developing a maskless lithography technology. The technology combines massively-parallel electron-beam writing with high speed optical data transport used in the telecommunication industry. The electron optics generates 13,000 electron beams that are focused on the wafer by electrostatic lens arrays which are manufactured...conference paper 2008
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- Kroon, H. (author), de Boer, P. (author) report 2008
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- de Boer, R.W.I. (author), Morpurgo, A.F. (author) journal article 2005
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- de Boer, J.J. (author) master thesis 2005
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- de Boer, J.J. (author) master thesis 2005
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- de Boer, J.J. (author) master thesis 2005
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- de Boer, J.J. (author) report 2004