Searched for: author%3A%22den+Uijl%2C+J.A.%22
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Yang, Y. (author), de Boer, Ane (author), den Uijl, J.A. (author)
A recent contest of shear tests modelling was carried out in 2019. Teams from universities and consultancies around Europe were invited to predict the shear capacity of two reinforced concrete beams. The basics of the numerical models were to be set up according the Dutch NLFEM Guideline RTD 1016–1:2017. In the contest, two reinforced...
journal article 2021
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Shionaga, R. (author), Pansuk, W. (author), Grunewald, S. (author), den Uijl, J.A. (author), Walraven, J.C. (author)
The synergistic action of a cementitious matrix and fibres can result in strain hardening in tension. The accompanied tensile strain capacity can be an important design parameter for strain-hardening cementitious composites in order to prevent the localization in a single crack and to assure that the stress is at least the tensile strength o f...
conference paper 2014
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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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Sarkhosh, R. (author), Walraven, J.C. (author), Den Uijl, J.A. (author), Braam, C.R. (author)
Long-term tests on large-scale concrete beams without shear reinforcement, which are tested for more than two years under sustained loading close to the ultimate shear capacity (load ratio ranging from 87% to 95%) under climate controlled condition, show that sustained loading has no significant effect on the shear capacity. Although many...
conference paper 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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Belletti, B. (author), Damoni, C. (author), Hendriks, M.A.N. (author), Den Uijl, J.A. (author)
According to the new fib Model Code 2010 the design shear resistance of a reinforced concrete (RC) structure can be evaluated through analytical and numerical calculation methods that fall into four different levels of approximations; the complexity and the accuracy of the calculated shear resistance increases with increasing the level of...
conference paper 2013
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Sarkhosh, R. (author), Walraven, J.C. (author), Den Uijl, J.A. (author)
Under sustained loading, the propagation of cracks in concrete is assumed to be related to the elastic deformation, material parameters and time. Based on the fictitious crack model (FCM), a finite element method is proposed to explain the behavior of cracks in time using current constitutive relations to approximate the time-dependent crack...
conference paper 2013
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Fennis-Huijben, S.A.A.M. (author), Grunewald, S. (author), Walraven, J.C. (author), Den Uijl, J.A. (author)
Optimizing concrete mixtures with regard to cement content is one of the most important solutions in sustainable concrete design. Workability o f these low cement content or ecological mixtures is very important. Eleven mortar mixtures are presented, which show how a higher packing density can be used to obtain mixtures that require less water....
conference paper 2012
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Sarkhosh, R. (author), den Uijl, J.A. (author), Braam, C.R. (author), Walraven, J.C. (author)
Concrete is one of the oldest and most widely used construction materials in the world and possesses many unique qualities such as versatility, aesthetic appeal, eco-friendliness, cost-effectiveness and availability. Increasingly, architects and engineers are making concrete their material of choice. Its strength, durability and natural thermal...
report 2012
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Ensink, S.W.H. (author), van de Graaf, A.V. (author), Slobbe, A.T. (author), Hendriks, M.A.N. (author), den Uijl, J.A. (author), Rots, J.G. (author)
conference paper 2012
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Sarkhosh, R. (author), den Uijl, J.A. (author), Braam, C.R. (author), Walraven, J.C. (author)
Concrete is a multiphase granular material consisting of aggregate particles of various sizes and irregular shape, embedded in hardened cement paste. The physicochemical processes during the hardening of the cement cause air voids, micro cracks and interfacial bond micro cracks. As a consequence of this heterogeneous structure, concrete displays...
report 2010
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Sarkhosh, R. (author), den Uijl, J.A. (author), Braam, C.R. (author), Walraven, J.C. (author)
Concrete is a multiphase granular material consisting of aggregate particles of various sizes and irregular shape, embedded in hardened cement paste. The physicochemical processes during the hardening of the cement cause air voids, micro cracks and interfacial bond micro cracks. As a consequence of this heterogeneous structure, concrete displays...
report 2010
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Yang, Y. (author), Walraven, J.C. (author), den Uijl, J.A. (author)
In this paper a brief overview on the effect of tension stiffening in normal strength concrete and High Performance Fiber Concrete (HPFC) is given. On the basis of an existing model, several simplifications are proposed to describe the post-cracking performance of HPFC, and a simplified model for practical application is developed. This model is...
journal article 2009
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Fennis, S.A.A.M. (author), Walraven, J.C. (author), Den Uijl, J.A. (author)
Ecological concrete can be designed by replacing cement with fillers. With low amounts of cement it becomes increasingly important to control the water demand of concrete mixtures. In this paper a cyclic design method based on particle packing is presented and evaluated on the basis of experiments on cement pastes combined with quartz powder....
journal article 2009
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Schumacher, P. (author), Walraven, J.C. (author), Den Uijl, J.A. (author), Bigaj-van Vliet, A. (author)
Steel fibres are known to enhance the toughness of concrete in compression and in tension. Steel fibres also improve the bond properties between concrete matrix and reinforcing steel bars. In order to investigate the effect of steel fibres on the rotation capacity of reinforced concrete members, four simply supported beams were loaded in three...
journal article 2009
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Vervuurt, A.H.J.M. (author), den Uijl, J.A. (author), Gijsbers, F.B.J. (author), van der Veen, C. (author)
report 2003
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Vervuurt, A.H.J.M. (author), den Uijl, J.A. (author), Gijsbers, F.B.J. (author), van der Veen, C. (author)
report 2003
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Den Uijl, J.A. (author), Kaptijn, N. (author)
Since the beginning of the nineties of the last century numerous viaducts in the Netherlands have been traced that suffer from ASR. Uniaxial tensile tests on cores drilled from the bridge decks sometimes showed a dramatically low tensile strength. Since these decks are not provided with shear reinforcement, the question was raised whether the...
journal article 2002
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Den Uijl, J.A. (author), Bigaj, A.J. (author)
A new bond model for ribbed bars embedded in concrete has been developed. The model is based on the confining capacity of the concrete surrounding the bar. This confinement capacity is evaluated with the help of a thick-wailed-cylinder model, with which the relation between the radial displacement and the radial compressive stress at the steel...
journal article 1996
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Al-Zubi, N. (author), Den Uijl, J.A. (author)
Deelproject 3, afschuifdraagvermogen van lichtbeton. Experimenteel onderzoek aan balken met afschuifwapening.
report 1992
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