Theoretical and Experimental Analysis of Moisture-Dependent Thermal Conductivity of Lightweight Ceramic Bricks

Pavlík, Zbyšek; Fiala, Lukáš; Jerman, Miloš; Vejmelková, Eva; Pavlíková, Milena; Keppert, Martin; Černý, Robert

doi:10.1007/s10765-012-1369-8

Cited by 11 publications

(3 citation statements)

References 20 publications

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“…In this experiment, the samples were arranged in desiccators with various salt solutions to achieve different values of relative humidity required to the material description, thus the mass of samples was measured in specified periods until steady-state values of mass were achieved. Subsequently, the moisture content w (m 3 •m −3 ) was calculated and the w = w(ϕ) functions for particular plasters, i.e., the sorption isotherms were plotted [35].…”

Section: Determination Methodsmentioning

confidence: 99%

Influence of Superabsorbent Polymers on Moisture Control in Building Interiors

et al. 2020

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Moisture loads in building interiors are accompanied by a deterioration of the indoor air quality. Such a phenomenon may induce serious health risks for building inhabitants as well as degradation of furnishing. Unfortunately, the employment of additional heat, ventilation and air conditioning (HVAC) devices does not comply with the sustainability principle due to increased energy consumption, thus cannot be viewed as an efficient solution. This study deals with the use of superabsorbent polymers (SAP) in cement-lime plasters, thus extends the current state of knowledge and outlines further possible development of novel moisture responsive plasters since lightweight aggregates do not provide the desired performance. To be specific, this paper contemplates the experimental analysis of novel plasters modified by 0.5, 1 and 1.5 wt. % of SAP to obtain input parameters for computational modeling. Based on the obtained outputs, the incorporation of SAP admixture resulted in a substantial increase in moisture transport properties including the water absorption coefficient and water vapor diffusion properties. The performed computational modeling revealed a considerable reduction of relative humidity fluctuations, thus mitigation of potential health issues associated with undesired moisture content in building interiors. Achieved results indicate that the SAP enhanced plasters have substantial passive moisture buffering performance and thus may contribute to the improvement of indoor air quality.

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Section: Determination Methodsmentioning

confidence: 99%

Influence of Superabsorbent Polymers on Moisture Control in Building Interiors

et al. 2020

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“…(7)) represent the upper and lower limits (Wiener's bounds) of ETC of the composite due to the corresponding minimum and maximum thermal resistances. Although there are narrower bounds such as Hashin-Shtrikman bounds, they are most suitable for the homogeneous and isotropic multiphase materials [36]. Therefore, the Parallel and Series models are always used to verify the rationalities of other models at the extreme conditions.…”

Section: Maximum and Minimum Effective Thermal Conductivitiesmentioning

confidence: 99%

How to enhance the effective thermal conductivity of composite material based on optimization method?

Zhang

Xia

et al. 2015

Energy

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“…Depending on the wall layers, the material properties (water vapor permeability), and the conditions of temperature and humidity on the opposite sides of the partitions may lead to condensation of water vapor inside the wall [16]. The presence of water in the material causes a deterioration of its properties, for example insulating parameters [17][18][19][20]. Also it can lead to the phenomenon of freezing, which adversely affects the stability of the building material.…”

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confidence: 99%

Risk Assesment of Water Vapor Condensation In Wall Made of Hemp-Lime Composite

Brzyski

2016

Architecture, Civil Engineering, Environment

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One of the ideas of sustainable construction is the use of materials that are byproducts of industry (for example fly ash, sillica fume) or demolition and manufacturing waste eg. sanitary ceramics, which can be used as aggregate for concrete [1]. Another group of materials are vegetable origin semi-finished products/ waste, such as straw, reed, fiber and flax and hemp shives. These materials are used as thermal insulation [2] or fillers in composites [3]. The organic components are generally sensitive to moisture. The use of of

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Theoretical and Experimental Analysis of Moisture-Dependent Thermal Conductivity of Lightweight Ceramic Bricks

Cited by 11 publications

References 20 publications

Influence of Superabsorbent Polymers on Moisture Control in Building Interiors

Influence of Superabsorbent Polymers on Moisture Control in Building Interiors

How to enhance the effective thermal conductivity of composite material based on optimization method?

Risk Assesment of Water Vapor Condensation In Wall Made of Hemp-Lime Composite

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