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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA21-06582S" target="_blank" >GA21-06582S: Experimentální a počítačová analýza transportu, akumulace a krystalizace solí v nehydrofobizovaných omítkových maltách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Thermophysics 2021

ISBN

978-0-7354-4365-5

ISSN

—

e-ISSN

1551-7616

Počet stran výsledku

9

Strana od-do

"020017"-"020017-8"

Název nakladatele

AIP Publishing

Místo vydání

Melville, NY

Místo konání akce

Dalešice

Datum konání akce

7. 9. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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