Searched for: author:"Koenders, E.A.B."
(1 - 20 of 40)

Pages

document
Zlopaša, J. (author), Norder, B. (author), Koenders, E.A.B. (author), Picken, S.J. (author)
Here we report on a study of a rheological behavior of sodium alginate and montmorillonite suspension. We find that viscoelastic behavior of this suspension is dramatically affected with increasing volume fraction of montmorillonite platelets. Addition of montmorillonite generally leads to gel formation, which is attributed to interactions of...
journal article 2016
document
Koenders, E.A.B. (author), Picken, S.J. (author)
The present invention is in the field of a composition for forming a bio-compatible membrane applicable to building material, such as steel, stainless steel, iron alloy, cast steel, etc., to a method of applying said composition for forming a bio-compatible membrane, a biocompatible membrane, use of said membrane for various purposes, and to...
patent 2015
document
Veerman, R.P. (author), van Breugel, K. (author), Koenders, E.A.B. (author)
Chloride-induced corrosion is a point of big concern in reinforced concrete (RC) structures. To monitor the actual health and to predict the remaining service-life of structures, it is important to understand the structural behaviour and the failure mechanism of structures exposed to chlorides under fatigue loading conditions. A beam test,...
conference paper 2015
document
Koenders, E.A.B. (author), Zlopasa, J. (author), Picken, S.J. (author)
The present invention is in the field of a composition for forming a bio-compatible membrane applicable to building material, such as concrete, cement, etc., to a meth od of applying said composition for forming a bio-compatible membrane, a biocompatible membrane, use of said membrane for various purposes, and to building material comprising...
patent 2015
document
Veerman, R.P. (author), Koenders, E.A.B. (author)
One of the key-elements in Structural Health Monitoring of reinforced concrete structures is the level of rebar corrosion and the way in which it affects the structural performance. A dynamic four-point-bending test was developed to help understanding the deflections of concrete structures under corrod-ed conditions. With this test, two...
conference paper 2014
document
Hoornahad, H. (author), Koenders, E.A.B. (author)
In this paper a performance-based method for the design of granular-paste mixtures will be proposed. Focus will be on the selection and proportioning of constituents to produce a mixture with a pre-defined shape holding ability. Shape holding ability of mixtures will be characterized by the shape preservation factor SPF. This SPF shows the...
conference paper 2014
document
Veerman, R.P. (author), Koenders, E.A.B. (author)
De-icing salts, used on roads in heavy winters, may enter reinforced concrete (RC) structures via its capillary pore system or via cracks, initiating reinforcement corrosion and reducing its remaining service-life. Vehicles passing real bridges exert a dynamic impact action that might activate a fatigue failure mechanism. In order to generate...
conference paper 2014
document
Veerman, R.P. (author), Koenders, E.A.B. (author)
The remaining service life of concrete structures strongly depends on the corrosion level of the reinforcement bars. It explains that measuring the corrosion rate is a key issue in monitoring the structural health of concrete structures. A common and appropriate technique used to evaluate the instantaneous corrosion rate of steel reinforcement...
conference paper 2014
document
Zlopasa, J. (author), Koenders, E.A.B. (author), Picken, S.J. (author)
Curing is the process of controlling the rate and extent of moisture loss from the surface of cement based materials. It is the final stage in the production of cement-based materials and it is the essential part for achieving continuous hydration of cement, while avoiding cracking due to drying shrinkage. Continuous cement hydration also...
conference paper 2014
document
Hansen, W. (author), Liu, Z. (author), Koenders, E.A.B. (author)
Viscoelastic stress modeling in ageing cementitious materials is of major importance in high performance concrete of low water cement ratio (e.g. w/c ~0.35) where crack resistance due to deformation restraint needs to be determined. Total stress analysis is complicated by the occurrence of internal stresses due to shrinkage, which requires...
conference paper 2014
document
Lu, T. (author), Koenders, E.A.B. (author)
In this paper, a conceptual model for analyzing the plastic part of autogenous deformation of cement paste based on the Arrhenius rate theory will be presented. The autogenous deformation will be calculated from the elastic deformations with inclusion of creep. Different kinds of cement paste with a water cement ratio 0.3 are tested and studied,...
conference paper 2014
document
Pargar, F. (author), Koleva, D.A. (author), Koenders, E.A.B. (author), Van Breugel, K. (author)
One of the reported problems associated with the performance of Ag/AgCl electrodes in alkaline environment, as concrete pore water, has been their poor stability. Open circuit potentials are typically observed to be stable for a time period of a few minutes to some days depending on the thickness and microstructure of the sparingly soluble AgCl...
conference paper 2014
document
Ukrainczyk, N. (author), Koenders, E.A.B. (author)
Coupled reactive-transport processes in cementitious materials play a crucial role in the aging process pf building materials. Up to now, the effect of aging on microstructure and evolution of it’s properties, in three dimensions, was studied only by dissolution of certain phases at random locations. In this paper we present a new 3D reactive...
conference paper 2014
document
Veerman, R.P. (author), Koenders, E.A.B. (author)
Structural Health Monitoring (SHM) systems are frequently used in civil infrastructures. One important durability property in reinforced concrete (RC) structures is the level of steel bar corrosion. In a dynamic four-point-bending test, two beams are loaded simultaneously, in which corrosion is accelerated in one of them. Since geophones are...
conference paper 2014
document
Susanto, A. (author), Koleva, D.A. (author), Van Breugel, K. (author), Koenders, E.A.B. (author)
Stray current is essentially an electrical current “leakage” from metal conductors and electrical installations. When it flows through cement-based systems, electrical energy is converted to thermal energy that causes increasing temperature due to Joule heating phenomena. The aim of this paper is to shed light on the influence of electrical...
conference paper 2014
document
Pargar, F. (author), Koleva, D.A. (author), Copuroglu, O. (author), Koenders, E.A.B. (author), van Breugel, K. (author)
The level of free chloride concentration in reinforced concrete structures essentially determines the onset of steel corrosion initiation and further propagation. One of the well-known methods for monitoring free chloride concentration is using silver/silver chloride electrodes (Ag/AgCl). These electrodes are sensitive mainly to chloride ions...
conference paper 2014
document
Veerman, R.P. (author), Koenders, E.A.B. (author)
For understanding the actual state of durability of concrete structures, it is important to know its response due to external loading. This response mainly depends on the actual structural and material properties of the structure, while loaded. Mechanical and chemical degradation are the main mechanisms that may affect these properties with time...
conference paper 2014
document
Martinelli, E. (author), Barros, J.A.O. (author), Etse, G. (author), Ferrara, L. (author), Folino, P.C. (author), Koenders, E.A.B. (author), Toledo Filho, R.D. (author)
journal article 2014
document
Pargar, F. (author), Koleva, D.A. (author), Copuroglu, Oguzhan (author), Koenders, E.A.B. (author), van Breugel, K. (author)
The stability of chloride ion selective electrodes in highly alkaline solutions is an important aspect when reliability and feasibility within reinforced concrete applications are concerned. The sensitivity of these electrodes largely depends on the properties of the AgCl layer, including uniformity, porosity, orientation, thickness, etc. These...
conference paper 2014
document
Pargar, F. (author), Koleva, D.A. (author), Koenders, E.A.B. (author), van Breugel, K. (author)
Service life of reinforced concrete structures exposed to chloride enriched environment is well known to be mainly determined by steel passivity breakdown in the event of chloride-induced corrosion initiation and propagation. Since Cl- induced (localized) corrosion is caused by the free (water-soluble) chloride, present in the pore network of a...
conference paper 2014
Searched for: author:"Koenders, E.A.B."
(1 - 20 of 40)

Pages