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Eversdijk, J. (author), Erich, S.J.F. (author), Hermanns, S.P.M. (author), Adan, O.C.G. (author), de Bolle, M. (author), de Meyer, K. (author), Bylemans, D. (author), Bekker, M. (author), ten Cate, A.T. (author)This paper focuses on the use of modified nano-clay particles as a controlled release system for biocides from building materials. Different (model) biocides were incorporated in a biocide/nano-clay composite and subsequently the release of the biocides was monitored under different environmental conditions. In addition, the biocide/clay...article 2012
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Nijland, T.G. (author), Bernardi, A. (author), Favaro, M. (author), Garcia, O. (author), Detalle, V. (author), Wittstadt, K. (author), Romero Sanchez, M.D. (author), Pockelé, L. (author), Kunday, B. (author), Verhey, B. (author), Brinkmann, U. (author), de Micheli, G. (author), Labouré, M. (author), Möller, B. (author), Olteanu, I.D. (author)The problem of deterioration of historical building materials, namely stone, wood and glass has become more and more urgent. Climate changes have increased the impact of natural decay whilst socio-economic requirements claim a more sustainable use of existing built heritage. The EU project NANOMATCH addresses this problem through the development...article 2012
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Lubelli, B.A. (author), van Hees, R.P.J. (author)OnEouten door het gebruik van kompressen is een techniek die meer en meer gebruiK wordt in de conservering van historisch metselwerk. Niettemin, wordt ontzouten nog vaak uitgevoerd op een trial and error basis, zonder wetenschappelijke kennis van de processen die vocht- en zouttranspoft regelen. Om het ontzoutingsproces te optimaliseren is,...bookPart 2012
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- Nijland, T.G. (author) public lecture 2012
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Polder, R.B. (author), Souza, L.M.S. (author)Alkali-silica reaction (ASR) is a deleterious mechanism known to affect several concrete structures worldwide. During this process, alkali ions present in the pore solution react with reactive components of the aggregate particle and, as a result a hygroscopic gel is formed. The produced gel absorbs water from the surrounding cement paste and...conference paper 2012
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Polder, R.B. (author), Fischer, H. (author), Yang, Z. (author)Two modified hydrotalcites (MHTs) intercalated with nitrate and aminoben-zonate anions, (i.e., CaAl-MHT-NO3 and CaAl-MHT-pAB) have been synthesized. The intercalation of CaAl-MHT-pAB was achieved by anion exchange of nitrate in the host material, CaAl-MHT-NO3, which was prepared by a coprecipitation method. Materials characterization was...conference paper 2012
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Polder, R.B. (author), Worm, D. (author), Courage, W. (author), Leegwater, G. (author)Corrosion of reinforcing steel in concrete structures causes concrete cracking and steel diameter reduction, eventually resulting in loss of safety. Conventional repair means heavy, labour intensive and costly work and the required quality level is under economic pressure. Consequently, conventional repair is short lived in many cases. An...conference paper 2012
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Adan, O.C.G. (author), der Heijden, G.H.A.V. (author), Pel, L. (author)The moisture transport in concrete subjected to fire is one of the most important processes with respect to fire spalling. The research on fire spalling of concrete is currently lacking experimental information of the moisture transport processes. We present combined moisture content and temperature profiles of one-sided heated concrete samples...article 2012
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- Yang, Z. (author), Fischer, H.R. (author), Polder, R.B. (author) conference paper 2012
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Nijland, T.G. (author), van Hees, R.P.J. (author), Bernardi, A. (author), Favaro, M. (author)Opperulaktebehandelingen zoals steenverstevigen, hydrofoberen en antigraffiti bestaan al meer dan 100 jaar. Op het gebied van steenverstevigers wordt gebruik gemaakt van een reeks verschillende chemische producten, waarvan kiezelzure esters (ethylsilicaten zoals TEOS) thans de meest gangbare zijn (Nijland et al. 2009). Ze kennen echter hun...bookPart 2012
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van Hees, R.P.J. (author), Lubelli, B.A. (author)Welke schade komt er voor bij historisch metselwerk? Wat zijn de oorzaken? In dit hoofdstuk worden schadebeelden beschreven en getoond en de achterliggende processen uitgelegd. Een overzicht. Ook bespreken de auteurs waarop je bij herstel en onderhoud alert moet zijn, waarmee je rekening moet houden en welke vooronderzoeken misschien nodig zijn.bookPart 2012
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Erkens, S. (author), van Vliet, D. (author), van Dommelen, A. (author), Leegwater, G.A. (author)Most design methods for pavements use a factor explaining the difference between pavement life predictions from design models and performance in the road [1]. Part of this correction factor is healing, the natural capacity of asphalt concrete to recover in rest periods, which generally are not present in laboratory fatigue tests in order to...conference paper 2012
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Leegwater, G.A. (author), Keijzer, E.E. (author)TNO heeft de Nederlandse weginfrastructuur geanalyseerd. Van aanleg tot sloop is nagegaan welke factoren een grote invloed hebben op de CO²-uitstoot en waar reducties mogelijk zijnarticle 2012
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Mookhoek, S.D. (author), Fischer, H.R. (author), van der Zwaag, S. (author)The work addressed involves the preparation and application of a compartmented polymer fibre, containing multiple separated domains with liquid agent for controlled release. The created fibre is a design for improvement to the existing liquid encapsulated self-healing systems such as fibre reinforced composites, i.e. increasing the released...article 2012
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Pacheco, J. (author), Çopuroǧlu, O. (author), Šavija, B. (author), Schlangen, E. (author), Polder, R.B. (author)Reinforcement corrosion is the most important deterioration mechanism in concrete infrastructure. Chlorides contained in saltwater or de-icing salts penetrate through the concrete cover activating corrosion. When left unattended, corrosion leads to cracking and spalling of concrete cover, reducing the structure's service life. The amount of...conference paper 2012
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Bekker, M. (author), Huinink, H.P. (author), Adan, O.C.G. (author), Samson, R.A. (author), Wyatt, T. (author), Dijksterhuis, J. (author)Indoor mold represents an important environmental concern, but a fundamental knowledge of fungal growth stages is needed to limit indoor fungal proliferation on finishing materials used in buildings. The present study focused on the succession of germination stages of the common indoor fungus Penicillium rubens on a gypsum substrate. This...article 2012
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Lubelli, B.A. (author), van Hees, R.P.J. (author), Nijland, T.G. (author)Oppervlaktebehandelingen zijn beschermingsmaatregelen waarbij op of via het oppervlak van de gevel (veelal chemische) middelen worden aangebracht. Het doel van een oppervlaktebehandeling is schade te herstellen en/of het oppervlak van de materialen te beschermen tegen toekomstige aantasting. In dit hoofdstuk worden waterafstotende en...bookPart 2012
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van Hees, R.P.J. (author), Groot, C. (author), Hughes, J.J. (author), van Balen, K. (author), Bicer-Simsir, B. (author), Binda, L. (author), Elsen, J. (author), von Konow, T. (author), Lindqvist, J.E. (author), Maurenbrecher, P. (author), Papayanni, I. (author), Subercaseaux, M. (author), Tedeschi, C. (author), Toumbakari, E.E. (author), Thompson, M. (author)This article focuses on repair or replacement mortars for historical buildings. Both the decision process and questions arising are dealt with, in order to better define and illustrate technical requirements for mortars to be used for the repair or restoration of monuments and historic buildings (masonry mortars, plasters, renders…). The article...article 2012
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Šavija, B. (author), Schlangen, E. (author), Pacheco, J. (author), Polder, R.B. (author)Reliable methods for controlled cracking of reinforced specimens in laboratory conditions are needed in order to experimentally study chloride ingress and reinforcement corrosion in cracks. In the paper, the Modified Wedge Splitting Test (MWST) for specimen cracking is presented. The setup is thoroughly explained, and the implications of...conference paper 2012
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Havermans, J.B.G.A. (author)De schrik van iedere archiefbeheerder en bibliothecaris zijn schimmels, want die verkruimelen op den duur het papier. Goed nieuws voor hen is recent wetenschappelijk onderzoek waaruit blijkt dat de behandeling met gammastralen de conditie van het vaak brozr documentatiemateriaal nauwelijks verder aantastarticle 2012