Effect of mixed vs single brine composition on salt weathering in porous carbonate building stones for different environmental conditions
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00461598" target="_blank" >RIV/68378297:_____/16:00461598 - isvavai.cz</a>
Výsledek na webu
<a href="http://www.sciencedirect.com/science/article/pii/S0013795216301879" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0013795216301879</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.enggeo.2016.06.011" target="_blank" >10.1016/j.enggeo.2016.06.011</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of mixed vs single brine composition on salt weathering in porous carbonate building stones for different environmental conditions
Popis výsledku v původním jazyce
The influence of different factors, brine composition, environmental conditions and pore structure, on salt weathering of porous carbonate building stones is investigated. The main goal of this study is to highlight the differences in weathering between single salts and a mixture of different salts. Two kinds of weathering mechanism are studied, the crystallization pressure and the deliquescence/recrystallization process. To achieve this purpose wetting and drying cycles and cycles varying relative humidity on samples containing salts were performed. The effect of total salt content with different salts and mixtures is simulated by weathering tests with solution of different compositions (NaCl, 6% in weight, Na2SO410H2O, 6% in weight, CaSO4 at saturation, and a mixture of them at total concentration of 6.2%). Weathering tests were performed at room temperature and 50 °C and under low and high relative humidity. The results show that the final weathering depends on a complex combination of three parameters: (i) environmental conditions, (ii) salt composition and (iii) petrophysical properties of stones, and general conclusions on the impact of each parameter can be drawn. An important result is that salt mixtures have a lesser impact on weathering during crystallization cycles: single salt brines, especially sodiumsulphate, producemoreweathering than complex brine compositions duringwetting and drying cycles. Conversely during variations on RH, samples with salt mixtures suffer more damage than samples weathered with a brine of single salt composition.
Název v anglickém jazyce
Effect of mixed vs single brine composition on salt weathering in porous carbonate building stones for different environmental conditions
Popis výsledku anglicky
The influence of different factors, brine composition, environmental conditions and pore structure, on salt weathering of porous carbonate building stones is investigated. The main goal of this study is to highlight the differences in weathering between single salts and a mixture of different salts. Two kinds of weathering mechanism are studied, the crystallization pressure and the deliquescence/recrystallization process. To achieve this purpose wetting and drying cycles and cycles varying relative humidity on samples containing salts were performed. The effect of total salt content with different salts and mixtures is simulated by weathering tests with solution of different compositions (NaCl, 6% in weight, Na2SO410H2O, 6% in weight, CaSO4 at saturation, and a mixture of them at total concentration of 6.2%). Weathering tests were performed at room temperature and 50 °C and under low and high relative humidity. The results show that the final weathering depends on a complex combination of three parameters: (i) environmental conditions, (ii) salt composition and (iii) petrophysical properties of stones, and general conclusions on the impact of each parameter can be drawn. An important result is that salt mixtures have a lesser impact on weathering during crystallization cycles: single salt brines, especially sodiumsulphate, producemoreweathering than complex brine compositions duringwetting and drying cycles. Conversely during variations on RH, samples with salt mixtures suffer more damage than samples weathered with a brine of single salt composition.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
AL - Umění, architektura, kulturní dědictví
OECD FORD obor
—
Návaznosti výsledku
Projekt
<a href="/cs/project/LO1219" target="_blank" >LO1219: Udržitelný pokročilý rozvoj CET</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Engineering Geology
ISSN
0013-7952
e-ISSN
—
Svazek periodika
210
Číslo periodika v rámci svazku
August
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
16
Strana od-do
124-139
Kód UT WoS článku
000380592100012
EID výsledku v databázi Scopus
2-s2.0-84975887172