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Veiga, Rosário (author), Faria, Paulina (author), van Hees, R.P.J. (author), Stefanidou, Maria (author), Maravelaki, Pagona Noni (author), Ioannou, Ioannis (author), Theodoridou, Magdalini (author), Bokan Bosilijkov, Violeta (author), Bicer-Simsir, Beril (author)Renders and plasters have significant functions in buildings. Their functionality is closely related to their properties, which depend on the mortar itself, the application technology, the interaction with the environment and the substrate. There are many basic characteristics that influence the performance of renders and plasters; however,...journal article 2023
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Papayianni, Ioanna (author), Bicer-Simsir, Beril (author), Jornet, Albert (author), Groot, C.J.W.P. (author), Valek, Jan (author), Bokan-Bosiljkov, Violeta (author), van Hees, R.P.J. (author), Padovnik, Andreja (author), Pachta, Vasiliki (author)Historic Structures are commonly coated with mortar layers (plasters, renders, flooring) for protection and decoration. These well finished architectural stratigraphic surfaces often suffer from deterioration, such as lack of adhesion or detachment between support and mortar layers and even between mortar layers. Grouting and filling voids...journal article 2023
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Ogugua, C.J. (author), Anton, S.V. (author), Tripathi, A.P. (author), Larrabeiti, Miguel Dominguez (author), van Hees, S.O. (author), Sinke, J. (author), Dransfeld, C.A. (author)Autoclave curing is one of the most energy consuming processes in manufacturing carbon fibre reinforced polymers. In order to improve the energy efficiency, one needs to understand energy usage in an autoclave and factors that influence it. This work presents two thermodynamic based models for estimating energy consumption in an autoclave....journal article 2023
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Lubelli, B. (author), Rörig-Daalgard, I. (author), Aguilar, A. M. (author), Aškrabić, M. (author), Beck, K. (author), Bläuer, C. (author), Cnudde, V. (author), D’Altri, A. M. (author), van Hees, R.P.J. (author), Kamat, Ameya (author)This recommendation is devoted to testing the resistance of natural stone and fired-clay brick units against salt crystallization. The procedure was developed by the RILEM TC 271-ASC to evaluate the durability of porous building materials against salt crystallization through a laboratory method that allows for accelerated testing without...journal article 2023
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Groot, C.J.W.P. (author), Veiga, Rosario (author), Papayianni, Ioanna (author), van Hees, R.P.J. (author), Secco, Michele (author), Alvarez, José I. (author), Faria, Paulina (author), Stefanidou, Maria (author)For conservation interventions of historic masonry generally lime-based mortars such as pure air lime mortars, lime-pozzolan mortars, natural hydraulic lime mortars and ternary mortars (lime-pozzolan-cement) are used. The main reason is that their hygric and mechanical (strength and ductility) performance are easy to adapt to most existing...journal article 2022
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Naldini, S. (author), van Hees, R.P.J. (author), van der Grijp, Ernst (author)In the Netherlands a program for the enhancement of quality in the restoration of monumental buildings is presently carried out, stimulated by national authorities and coordinated by the foundation ERM. Guidelines are issued by the branches involved, from architects to masons, under guidance of an experts’ committee, to perform interventions on...conference paper 2021
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Lubelli, B. (author), van Hees, R.P.J. (author)Het blussen van een brand gaat gepaard met een grote hoeveelheid water die in het metselwerk van een gebouw binnendringt; daarnaast duurt het vaak ook nog lange tijd voor een gebouw weer waterdicht kan worden gemaakt. Dit kan een hoog vochtgehalte in de muren veroorzaken, met alle daaraan verbonden problemen, zoals zouttransport, zout- en...book chapter 2021
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Watté, P. (author), van Hees, G. (author), Engelen, R. (author), van Driel, W.D. (author)Reliability of electronic drivers, or systems, is crucial for the business of Signify. We manufacture and sell more than a million drivers per year. Field returns taught us what failure modes are important, but this is not sufficient to provide lifetime claims for our products. Being in this business for almost a century, in order to provide...conference paper 2021
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Lubelli, B. (author), Nijland, Timo G. (author), van Hees, R.P.J. (author)Compatibility of repair materials in conservation is a widely desired goal, but difficult to achieve. In this research, the compatibility of four commercial stone repair mortars, commonly used in conservation practice in the Netherlands and neighbouring countries, is discussed. In order to do so, they have been characterized in laboratory....journal article 2021
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Lubelli, B. (author), van Hees, R.P.J. (author)The Rietveld Schröder House is not only an icon of Dutch architecture, but also a museum welcoming about 18,000 visitors each year. The unusual experimental character of the construction and the fact that the house is open to the public<br/>can be expected to affect the indoor climate and to pose some risks for the conservation of the building...book chapter 2019
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Válek, Jan (author), Hughes, John J. (author), Pique, Francesca (author), Gulotta, Davide (author), van Hees, R.P.J. (author), Papayiani, Ioanna (author)Surface repair mortars are used for the compensation, or repair, of lost portions of surface materials in historic masonry buildings. It is recommended that their design and application should be performed in a wider context of conservation values related decision making, to prioritise preservation of original fabric, authenticity of approach...journal article 2019
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Granneman, S.J.C. (author), Lubelli, B. (author), van Hees, R.P.J. (author)Weathering of porous building materials caused by the crystallization of soluble salts is a ubiquitous problem in the built cultural heritage. Especially lime-based mortars are susceptible to salt decay, due to both their bimodal pore size distribution and low mechanical strength. The addition of crystallization modifiers to mortars during...journal article 2019
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Quist, W.J. (author), van Dam, J.J.E. (author), van Hees, R.P.J. (author)Naar aanleiding van het historisch georiënteerde onderzoek naar oppervlaktebehandelingen (Nijland & Quist 2018) en het onderzoek naar het hervoegen van gehydrofobeerd metselwerk, beide uitgevoerd binnen de samenwerking tussen TNO, RCE en TU Delft in MonumentenKennis, ontstond het idee om aan de hand van een aantal casussen te kijken naar de...conference paper 2018
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Nijland, T.G. (author), Lubelli, B. (author), van Hees, R.P.J. (author)In deze bijdrage wordt nader ingegaan op de achtergronden van zoutschade, de vraag of we er in de toekomst meer last van zullen krijgen, en op oud, nieuw en gewenst onderzoek.conference paper 2018
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van Hees, R.P.J. (author), Lubelli, B. (author), Hacquebord, A. (author)Injectie van chemische producten is wellicht de meest verbreide methode om optrekkend Injectie van chemische producten is wellicht de meest verbreide methode om optrekkend Injectie van chemische producten is wellicht de meest verbreide methode om optrekkend Injectie van chemische producten is wellicht de meest verbreide methode om optrekkend...conference paper 2018
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Granneman, S.J.C. (author), Lubelli, B. (author), van Hees, R.P.J. (author)In deze bijdrage worden de belangrijkste bevindingen gerelateerd aan het effect van toevoeging van de modificatoren op morteleigenschappen en op de duurzaamheid van de mortels gerapporteerd. Allereerst wordt er een experiment beschreven waarin wordt getest of de effectiviteit van borax wordt beïnvloed door het carbonatatieproces. Vervolgens...conference paper 2018
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Lubelli, B. (author), van Hees, R.P.J. (author), Bolhuis, J. (author)Optrekkend vocht is een vaak voorkomend fenomeen in gebouwen. Vooral oude gebouwen die geen waterkerende laag (zoals bijvoorbeeld een trasraam) hebben, lijden aan dit probleem. De relevantie van optrekkend vocht blijkt ook uit het grote aanbod van producten voor het bestrijden van dit probleem. Het grote, gevarieerde aanbod en de beperkte...book chapter 2018
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van Hees, R.P.J. (author), Lubelli, B. (author), Hacquebord, A. (author)The injection of chemical products, meant to penetrate in the capillaries of the materials composing an affected wall, is perhaps the most diffused method to deal with rising damp. The majority of these chemical products are hydrophobic treatments; they can be either solvent-based or (increasingly) water-based. Traditionally, these products...journal article 2018
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Granneman, S.J.C. (author), Lubelli, B. (author), van Hees, R.P.J. (author)Additivating mortars with crystallization modifiers is a novel approach to mitigate salt crystallization damage in historic masonry. Once verified the effectiveness of crystallization modifiers in bulk solution, the next step consists in verifying whether: (i) modifiers are still effective when mixed in mortar and going through the carbonation...journal article 2018
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Lubelli, B. (author), Cnudde, Veerle (author), Diaz-Goncalves, Teresa (author), Franzoni, Elisa (author), van Hees, R.P.J. (author), Ioannou, Ioannis (author), Menendez, Beatriz (author), Nunes, Cristiana (author), Siedel, Heiner (author), Stefanidou, Maria (author), Verges-Belmin, Veronique (author), Viles, Heather (author)The durability of building materials with respect to salt crystallization is commonly determined by accelerated weathering tests, carried out in the laboratory. An effective laboratory weathering test should assess the durability and, in the case of conservation of historic buildings, the compatibility of repair materials with those existing....journal article 2018