Water and nitrate transport in lime render – Experimental and computational assessment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00359239" target="_blank" >RIV/68407700:21110/22:00359239 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1063/5.0094499" target="_blank" >https://doi.org/10.1063/5.0094499</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0094499" target="_blank" >10.1063/5.0094499</a>

Result language
angličtina
Original language name
Water and nitrate transport in lime render – Experimental and computational assessment
Original language description
As the combination of moisture and water-soluble salts is one of the important factors causing the deterioration of historical buildings, it is necessary to provide accurate characterization of its transport processes before choosing a correct repairment strategy. In this study, coupled water and nitrate transport in lime rendering mortar is investigated with the use of experimental methods and mathematical modelling. In the experimental work, basic physical properties of lime render are determined. Subsequently, moisture and nitrate concentration profiles are measured for rod-shaped samples subjected to one-sided uptake of KNO3 solution. The moisture content is determined by the gravimetric method; the nitrate concentration is measured using high-performance liquid chromatography (HPLC). Then, the nitrate binding isotherm is gained with the use of modified absorption method by Tang and Nilsson, with results indicating high nitrate binding capacity of examined lime render. Finally, the measured concentration profiles are subjected to the inverse analysis using the diffusion-advection model, and values of moisture diffusivity and nitrate diffusion coefficient are calculated.
Czech name
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Czech description
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Project
<a href="/en/project/GA21-06582S" target="_blank" >GA21-06582S: Experimental and computational analysis of salt transport, accumulation, and crystallization in non-hydrophobized rendering mortars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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