Moisture dry-out from steel faced insulated sandwich panels

Kalbe, Kristo; Piikov, Hubert; Kesti, Jyrki; Honkakoski, Erkki; Kurnitski, Jarek; Kalamees, Targo

doi:10.1051/e3sconf/202017217007

Cited by 5 publications

(8 citation statements)

References 15 publications

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“…A 2D model was necessary to achieve a good agreement between the measured data and simulation results. Kalbe et al [22] reported a good agreement of the measured and simulated drying processes, but there was a possibility of a slight overestimation of drying. The authors compared the measured and simulated RH and water vapour pressures (Figure 8), which showed sufficiently good agreement, although the simulation tended to underestimate RH in the high humidity region.…”

Section: Ham Modellingmentioning

confidence: 90%

“…The simulation models were calibrated against the measurements with sufficient accuracy as described by Kalbe et al [22]. A 2D model was necessary to achieve a good agreement between the measured data and simulation results.…”

Section: Ham Modellingmentioning

confidence: 99%

“…Bulk Table 1 and Figure 9 present the material properties used in the HAM models. The material properties are based on the data provided by the producer of the sandwich panels and Delphin's default functions (for the properties that depend on the hygric environment) [22].…”

Section: Materials Property Valuementioning

confidence: 99%

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Moisture Dry-Out Capability of Steel-Faced Mineral Wool Insulated Sandwich Panels

2020

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Moisture dry-out from steel-faced insulated sandwich panels has previously received little attention from researchers. This paper reports the results from laboratory tests and dynamic heat, air, and moisture transport simulations of the moisture dry-out capabilities of a steel-faced sandwich panel with a mineral wool core. Three test walls (TWs) with dimensions of 1.2 m × 0.4 m × 0.23 m were put above water containers to examine the moisture transport through the TWs. A calibrated simulation model was used to investigate the hygrothermal regime of a sandwich panel wall enclosure with different initial moisture contents and panel joint tightening tapes. The moisture dry-out capacity of the studied sandwich panels is limited (up to 2 g/day through a 30-mm-wide and 3-m-long vertical joint without tapes). When the vertical joint was covered with a vapour-permeable tape, the moisture dry-out was reduced to 1 g/day and when the joint was covered with a vapour-retarding tape, the dry-out was negligible. A very small amount of rain would be enough to raise the moisture content to water vapour saturation levels inside the sandwich wall, had the rain ingressed the enclosure. The calculated time of wetness (TOW) on the internal surface of the outer steel sheet stayed indefinitely at about 5500 h/year when vapour-retarding tapes were used and the initial relative humidity (RH) was over 80%. TOW stabilised to about 2000 h/year when a vapour-permeable tape was used regardless of the initial humidity inside the panel. A vapour-permeable tape allowed moisture dry-out but also vapour diffusion from the outside environment. To minimise the risk of moisture damage, avoiding moisture ingress during construction time or due to accidents is necessary. Additionally, a knowledge-based method is recommended to manage moisture safety during the construction process.

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Section: Ham Modellingmentioning

confidence: 90%

Section: Ham Modellingmentioning

confidence: 99%

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Moisture Dry-Out Capability of Steel-Faced Mineral Wool Insulated Sandwich Panels

2020

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“…The measurements were done using a climate chamber located at HAMK Tech in Finland (previously Hämeenlinna Sheet Metal Centre). The same sandwich panels were studied in a subsequent study in TalTech, Estonia, which is presented in another paper at NSB2020 [4].…”

Section: Methods and Materials 21 Test Wallsmentioning

confidence: 99%

Laboratory tests and modelling of mineral wool insulated steel sandwich panels

et al. 2020

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This study presents results from laboratory measurements of mineral wool insulated steel sandwich panels. The purpose of the work was to have a better understanding on the heat and moisture conditions inside sandwich panels and to study how the structure behaves in water leakage situation. The tests were done by sealing the structure from all sides and regulating the temperature on one side of the test structure while measuring the temperature and relative humidity conditions inside the structure. Water leakages were created by injecting liquid water onto the insulation layer. According to the results, water vapour pressure differences stayed relatively small both in stationary and dynamic conditions. This implies that the limiting factor for moisture source was the evaporation rate from the water leakage and that the vapour pressure throughout the insulation layer is determined strongly by the vapour pressure at the possible condensation layer. The paper discusses also the determination of sensor accuracy and impacts of a thermal bridge from the probe itself. Also, measurement results from a new radio wave monitoring method are presented.

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“…Therefore, alternative methods of improving the adhesion between rubber and steel are of great interest. Aluminum mesh, metalized film, and sheet aluminum are popular substrates in the building industry, working as a carrier or construction element for flashing tapes, roofing tape, or roof window collars [ 124 , 125 , 126 ]. Popular sound deadening and vibration damping plates (VDP) and tapes for the automotive industry are usually made of bitumen or butyl rubber-based adhesives [ 127 ].…”

Section: Materials Joined Using Hot Meltsmentioning

confidence: 99%

Organosilicon Compounds in Hot-Melt Adhesive Technologies

Czakaj,

Sztorch,

Romanczuk-Ruszuk

et al. 2023

Polymers

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Hot-melt adhesives (HMAs) are thermoplastic materials that can bond various substrates by solidifying rapidly upon cooling from the molten state, and their modification with organosilicon compounds can result in crosslinking behavior, characteristic of gels. Organosilicon compounds are hybrid molecules that have both inorganic and organic components and can enhance the properties and performance of HMAs. The gel aspect of HMA with and without organosilicon modifiers can be considered in organosilicon-modified systems, the modifiers are often either sol–gel condensation products or their mechanism of action on the adherent surface can be considered of sol–gel type. The purpose of this manuscript is to present the current state of the art on the formulation, characterization, and application of HMAs and optimize their performance with organosilicon compounds for application in various industries such as automotive, construction, and photovoltaics. This review covers articles published within the period of 2018–2022. The article is divided into sections, in which information about hot-melt adhesives is described at the beginning. The following part of the presented review focuses on the composition of hot-melt adhesives, which takes into account the use of organosilicon compounds. The last part of this review outlines the future trends in hot-melt adhesives.

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Moisture dry-out from steel faced insulated sandwich panels

Cited by 5 publications

References 15 publications

Moisture Dry-Out Capability of Steel-Faced Mineral Wool Insulated Sandwich Panels

Moisture Dry-Out Capability of Steel-Faced Mineral Wool Insulated Sandwich Panels

Laboratory tests and modelling of mineral wool insulated steel sandwich panels

Organosilicon Compounds in Hot-Melt Adhesive Technologies

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