Moisture buffering capacity of highly absorbing materials

Cerolini, S.; D’Orazio, Marco; Perna, Costanzo Di; Stazi, Alessandro

doi:10.1016/j.enbuild.2008.08.006

Cited by 69 publications

(39 citation statements)

References 11 publications

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“…Sie alle reagieren mehr oder weniger stark dynamisch auf die Feuchtigkeit der Raumluft. Sogar mit Superabsorbern wie beispielsweise Copolymeren aus Acrylsäure und Natriumacrylat oder Silikagel wurden Tests durchgeführt, um deren Feuchtespeichereigenschaften zu bestimmen [3]. Doch entweder sind die genannten Materialien nicht effektiv genug, erfül-len andere bauphysikalisch relevante Anforderungen nicht oder sie sind für den großflächigen Einsatz als Baumaterial schlichtweg zu teuer.…”

Section: Entwicklungsarbeitunclassified

Die Entwicklung eines mineralischen Feuchtespeicher‐Grundputzes

Stahl

Vonbank

Hölzer³

2013

Bauphysik

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Im folgenden Aufsatz wird die Entwicklung eines Feuchtespeicherputzes auf mineralischer Basis beschrieben. Im Rahmen eines schweizerischen Forschungsprojekts zur Restaurierung von historischen Gebäuden wurden unterschiedliche, als feuchtespeichernd bekannte Putze nach dem Nordtestverfahren untersucht. Durch die anschließende Neuentwicklung konnte gezeigt werden, dass sich der optimierte Feuchtespeicherputz von heutigen, marktgängigen Produkten durch eine bis zu 9‐fache Feuchteaufnahme auszeichnet. Die Forschungsergebnisse erlauben nun eine gezielte Veränderung der Feuchtespeichereigenschaften und somit des Raumklimas von Alt‐ und Neubauten auf einfachem Wege durch die Verwendung entsprechender mineralischer Putzsystemkombinationen.The development of a mineral based moisture buffering render. As part of a swiss research project dealing with refurbishment of historic buildings, different moisture‐storing renders were investigated according to the Nordictest method. By the subsequent new development it was shown that the moisture uptake of the optimized moisture buffering render is up to nine times higher than that of today`s products available in the market. The result of the research works enables a targeted modification of the moisture buffering properties and therefore of the indoor climate of old and new buildings on a simple way using appropriate mineral render system combinations.

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Section: Entwicklungsarbeitunclassified

Die Entwicklung eines mineralischen Feuchtespeicher‐Grundputzes

Stahl

Vonbank

Hölzer³

2013

Bauphysik

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“…Some European countries have introduced a thick layer of insulating material in the walls and roofs of the building structure envelope to reduce energy consumption and gas emission. Unfortunately, thick layers of insulating material in walls and roofs has led to an increase in indoor RH% levels in occupied buildings due to low air permeability (Cerolini 2009). Energy consumption may increase if electronic devices are used to reduce indoor RH%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Loess Treatment and Carbonization on the Hygric Performance of Medium-density Fiberboard

Lee¹,

Jang²,

Lee³

et al. 2017

BioResources

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The level of relative humidity is one of the key parameters in evaluating indoor air quality and comfort. In principle, humidity can be kept more uniform over time by use of materials that adsorb moisture from the air reversibly. This study was conducted to investigate the effect of loess treatment and carbonization on the hygric performance of mediumdensity fiberboard (MDF). The loess treatment was conducted with different sizes of loess particle prepared by a high-pressure homogenizer. After loess treatment on the surface of the MDF, it was carbonized at high temperature (600 °C). Loess is an abundant mineral high in Si content, which has high moisture absorption capacity, which remained after the carbonization process. The study also found that the loess treatment positively affected the hygric performance of carbonized MDF (c-MDF). The hygric performance of c-MDF almost doubled after the loess treatment compared with the non-treated c-MDF. However, the nano conversion of loess did not influence the hygric performance. Loess-treated carbonized MDF could be used as a humidity controller in buildings.

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“…Indoor humidity control materials were firstly studied in Japan for cultural heritage protection and subsequently expanded to the chemical, textile and building industry. Lately, according to the performed studies based on measurements (Cerolini et al 2010) or simulations (Steeman et al 2009) several authors refer to the beneficial properties of buildings materials such as bricks, aerated autoclaved concrete, wood, and plasters for moderation of interior humidity.…”

Section: Introductionmentioning

confidence: 99%

Moisture Buffering Potential of Plasters for Energy Efficiency in Modern Buildings

Fořt

Doleželová

Černý

2017

Proccedings of 10th International Conference "Environmental Engineering"

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Abstract. Moisture level significantly affects durability of constructions, their thermal performance and quality of indoor air. Since building envelopes are subjected to a moisture gradient, additional ventilation systems are employed to maintain relative humidity on the desired level. Although modern advanced ventilation systems provide sufficient air exchange rate, their wider application is in conflict with sustainability development principles due to high energy demands. Moreover, according to the European legislation related to the Nearly Zero Energy Buildings (European Directives 2002/91/EC and 2010/31/EU), air tightness of building envelopes in order to provide high thermal resistance leads to large moisture loads in building interiors. Among other factors, a high level of relative humidity has negative effect on the work efficiency and health of building inhabitants. A detailed insight into building materials behavior during cyclic moisture loading was accessed within this study. The moisture buffering values of three interior plasters were investigated in order to describe influence of plasters on moderation of indoor environment. Particular materials were loaded according to the NORDTEST protocol by 8/16 h loading schema at 70/30% RH. Here, the excellent moisture buffer classification was obtained for lightweight perlite plaster (PT) with the highest total open porosity. However, contrary to the higher total open porosity of renovation plaster (PS), the core plaster (CP) achieved higher moisture buffer capacity than PS. This discrepancy refers to the influence of the pore size distribution which is, besides the total open porosity, essential for a detailed characterization of moisture buffering potential of building materials. Based on the results of Mercury intrusion porosimetry, a correlation between pore size distribution and moisture buffer value was revealed.

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Moisture buffering capacity of highly absorbing materials

Cited by 69 publications

References 11 publications

Die Entwicklung eines mineralischen Feuchtespeicher‐Grundputzes

Die Entwicklung eines mineralischen Feuchtespeicher‐Grundputzes

Effect of Loess Treatment and Carbonization on the Hygric Performance of Medium-density Fiberboard

Moisture Buffering Potential of Plasters for Energy Efficiency in Modern Buildings

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