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Van der Vurst, F. (author), Grunewald, S. (author), De Schutter, G. (author)Over time, several mix design metliods liave been developed to obtain a selfcompacting concrete (SCC) with suitable fresh and hardened concrete properties. The very fluid concrete with no need for external compaction is achieved by using a higher powder content and the use of chemical admixtures. Segregation and bleeding are prevented by either...conference paper 2015
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Van der Vurst, F. (author), Grunewald, S. (author), Feys, D. (author), De Schutter, G. (author)In order to avoid durability problems caused by an inadequate consolidation of concrete, self-compacting concrete (SCC) has been developed. The mix design of SCC aims at balancing a minimum flowability allowing air bubbles to escape and a maximum flowability in order to avoid segregation. Because of the higher demands on mix design and...conference paper 2015
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Patel, R.A. (author), Perko, J. (author), Jacques, D. (author), De Schutter, G. (author), Van Breugel, K. (author), Ye, G. (author)Calcium leaching is one of the important degradation mechanisms causing dissolution of the crystalline phases such as, AFm, portlandite increasing capillary porosity. Further it leads to decalcification of an amorphous C-S-H phase causing increase in the gel porosity and in turn degrading the long term performance of concrete structures. In this...conference paper 2014
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Verbandt, M. (author), Theys, B. (author), De Schutter, J. (author)This article presents the development of a visionbased VTOL UAV docking system for outdoor applications. A new marker type is constructed, along with a robust detection algorithm based on the Hough transform, which forms the basis of the positioning system. For verification purposes, a binary classifier based on support vector machines is...conference paper 2014
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Patel, R.A. (author), Perko, J. (author), Jaques, D. (author), De Schutter, G. (author), Ye, G. (author), Van Breugel, K. (author)A Lattice Boltzmann (LB) based reactive transport model intended to capture reactions and solid phase changes occurring at the pore scale is presented. The proposed approach uses LB method to compute multi component mass transport. The LB multi-component transport model is then coupled with the well-established geochemical reaction code PHREEQC...conference paper 2013
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Van Overloop, P.J.A.T.M. (author), Negenborn, R.R. (author), Weijs, S.V. (author), Malda, W. (author), Bruggers, M.R. (author), De Schutter, B. (author)Unlike mountainous areas, lowland areas have limited potential to generate energy from water flows. Instead, for water systems in lowland areas that continuously need to pump water out of the system, the focus should be set to saving energy in the present water management. This paper gives an introduction into possibilities to manage water...conference paper 2010
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Leirens, S. (author), Zamora, C. (author), Negenborn, R.R. (author), De Schutter, B. (author)Urban water supply networks are large-scale systems that transport potable water over vast geographical areas to millions of consumers. A safe and efficient operation of these networks is crucial, as without it living in today’s cities would be impossible. To achieve an adequate operation, these networks are equipped with actuators like pumps...conference paper 2010
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Arnold, M. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author)The optimization of combined electricity and natural gas systems is addressed in this paper. The two networks are connected via energy hubs. Using the energy hub concept, the interactions between the different infrastructures can be analyzed. A system consisting of several interconnected hubs forms a distributed power generation structure where...conference paper 2009
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Negenborn, R.R. (author), Sahin, A. (author), Lukszo, Z. (author), De Schutter, B. (author), Morari, M. (author)Irrigation canals transport water from water sources (such as large rivers and lakes) to water users (such as farmers). Irrigation canals are typically very large in nature, covering vast geographical areas, and involving a significant number of control actuators, such as pumps, gates, and locks. The control of such canals is aimed at...conference paper 2009
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Arnold, M. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author)The optimal operation of an integrated electricity and natural gas system is investigated. The couplings between these two systems are modeled by energy hubs, which serve as interface between the loads and the transmission infrastructures. Previously, we have applied a distributed control scheme to a static three-hub benchmark system. In this...conference paper 2009
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Negenborn, R.R. (author), Van Overloop, P.J. (author), De Schutter, B. (author)Irrigation canals are large-scale systems, covering vast geographical areas, and consisting of many interconnected canal reaches that interact with control structures such as pumps and gates. The control of such irrigation canals is usually done in a manual way, in which a human operator travels along the irrigation canal to adjust the settings...conference paper 2009
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Arnold, M. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author)The optimal operation of an integrated electricity and natural gas infrastructure is investigated. The couplings between the electricity system and the gas system are modeled by so-called energy hubs, which represent the interface between the loads on the one hand and the transmission infrastructures on the other. To increase reliability and...conference paper 2009
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Bajracharya, G. (author), Koltunowicz, T. (author), Negenborn, R.R. (author), Papp, Z. (author), Djairam, D. (author), De Schutter, B. (author), Smit, J.J. (author)In this paper, a model-predictive control based framework is proposed for modeling and optimization of the health state of power system equipment. In the framework, a predictive health model is proposed that predicts the health state of the equipment based on its usage and maintenance actions. Based on the health state, the failure rate of the...conference paper 2009
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Houwing, M. (author), Negenborn, R.R. (author), Ilic, M.D. (author), De Schutter, B. (author)With the increasing application of distributed energy resources and information technologies in the electricity infrastructure, innovative possibilities for incorporating the demand side more actively in power system operation are enabled. At the residential level energy costs could be reduced with intelligent price-based control concepts ...conference paper 2009
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Negenborn, R.R. (author), Houwing, M. (author), De Schutter, B. (author), Hellendoorn, J. (author)With the increase in the number of distributed energy resources and the amount of intelligence in electricity infrastructures, the possibilities for minimizing costs of household energy consumption increase. Household systems are hybrid systems, in the sense that they exhibit both continuous and discrete dynamics. In this paper the mixed-logical...conference paper 2009
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Negenborn, R.R. (author), De Schutter, B. (author)Water networks are large-scale systems, consisting of many interacting components. They are currently typically operated by local decentralized controllers which receive setpoints from human operators. We discuss how communication among the local controllers can be included and in particular propose the use of distributed model predictive...conference paper 2008
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Negenborn, R.R. (author), Houwing, M. (author), De Schutter, B. (author), Hellendoorn, H. (author)With the increasing use of distributed energy resources and intelligence in the electricity infrastructure, the possibilities for minimizing costs of household energy consumption increase. Technology is moving toward a situation in which automated energy management systems could control domestic energy generation, storage, and consumption. In...conference paper 2008
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Houwing, M. (author), Negenborn, R.R. (author), De Schutter, B. (author)The increasing presence of distributed energy resources, information and intelligence in the electricity infrastructure increases the possibilities for larger economic efficiency of power systems. This work shows the possible cost advantages of applying a model predictive control (MPC) strategy to residential energy systems. MPC can take future...conference paper 2008
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Houwing, M. (author), Negenborn, R.R. (author), Heijnen, P.W. (author), De Schutter, B. (author), Hellendoorn, H. (author)With an increasing use of distributed energy resources and intelligence in the electricity infrastructure, the possibilities for minimizing costs of household energy consumption increase. Technology is moving toward a situation in which households manage their own energy generation and consumption, possibly in cooperation with each other. As a...conference paper 2007
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Hug-Glanzmann, G. (author), Negenborn, R.R. (author), Andersson, G. (author), De Schutter, B. (author), Hellendoorn, H. (author)As power systems generally are large interconnected systems controlled by several parties, centralized optimal power flow (OPF) control taking the entire grid into account is often not feasible. To use optimal control in power systems nevertheless, the overall system is decomposed into areas with associated subproblems, which are solved in an...conference paper 2007