Water content of limestones submitted to realistic wet deposition: a CIME2 chamber simulation

Chabas, Anne; Sizun, Jean‐Pierre; Gentaz, Lucile; Uring, Pauline; Phan, Alain; Coman, Adriana; Alfaro, Stéphane C.; Saheb, Mandana; Pangui, Edouard; Zapf, Pascal; Huet, F.

doi:10.1007/s11356-018-2433-0

Cited by 7 publications

(5 citation statements)

References 25 publications

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“…Then, when the hydraulic continuity between the wetted surface and the internal part of the sample is established, the water absorption follows a linear progression according to the Washburn's law. This behaviour has already been observed on other limestone samples with a porosity between 15 and 32% and subjected to the same experimental conditions in the CIME2-chamber (Chabas et al, 2018).…”

Section: Simulation Of Water Transfers In the Cime2-chambersupporting

confidence: 79%

“…The quanti cation of the total water porosity of the limestone shows that it amounts to 17.5%. This is a low porosity for a Lutetian limestone in comparison with others such as those of Saint-Maximin of the " ne rock" type, about 32%, or of the Liais type, about 27% (Chabas et al, 2018).…”

Section: Preferential Migration Path Of the Salt Solutionsmentioning

confidence: 75%

“…CIME2 is a laboratory made chamber designed to realistically simulate wet atmospheric deposition on porous samples. Description and operating condition of CIME2 are detailed in Chabas et al (2018). The main steps of a water transfer simulation are reminded in the following paragraph.…”

Section: Petrophysical Properties Of Render and Limestonementioning

confidence: 99%

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Sources and chronology of soluble salt formation in a medieval dovecote caught up in urbanization: a resilience story?

Chabas

Kloppmann

Sizun

et al. 2022

Preprint

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The dovecote is one of the last two witnesses of the medieval history of the city of Creteil (11 km SE of Paris). Classified as a historical monument by the French Ministry of Culture in 1972, it was moved away from its original location the same year and restored between 1980 and 1987. Fifty years after its displacement, the dovecote still shows salt efflorescence on the inner and outer wall surface. The aim of this study is to determine the composition and the ancient or modern source of these salts and whether their presence is harmful to the preservation of the dovecote. A combination of low- to non-invasive methods associating microclimatic measurements, mineralogical, petrophysical, chemical, and isotopic analyses on micro-samples with historical documentation are used to find the causes of salt enrichment and migration throughout and after the service life of this monument.

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Section: Simulation Of Water Transfers In the Cime2-chambersupporting

confidence: 79%

Section: Preferential Migration Path Of the Salt Solutionsmentioning

confidence: 75%

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Sources and chronology of soluble salt formation in a medieval dovecote caught up in urbanization: a resilience story?

Chabas

Kloppmann

Sizun

et al. 2022

Preprint

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“…In the future, it will be interesting to use the CRDS technique to investigate the evaporation of water isotopologues under varying wet depositions within atmospheric simulation chambers of the type presented by Chabas et al 49 Further work will also investigate the influence of temperature on the drying kinetics of different classes of limestone and other porous materials that have been subject to treatment with consolidants. Finally, we note that the CRDS technique can be used to readily couple the detection of water and its isotopologues with the sensitive and selective detection of other trace gas species and pollutants; such measurements will further enhance our understanding of decay mechanisms within these heritage materials and strategies for ameliorating their effect.…”

Section: Discussionmentioning

confidence: 99%

Determining Water Transport Kinetics in Limestone by Dual-Wavelength Cavity Ring-Down Spectroscopy

et al. 2022

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Water plays a major role in the deterioration of porous building materials such as those widely found in built heritage, influencing many physical, chemical, and biological decay processes. This article details a proof-of-principle study using near-infrared cavity ring-down spectroscopy (CRDS) to monitor the release of water and its artificially enriched isotopologues from small (ca. 25 × 25 × 5 mm) samples of limestone subject to drying by a fixed flow of nitrogen with varying levels of humidity and at room temperature and atmospheric pressure. Under low-humidity conditions, the drying kinetics are consistent with the well-established two-phase drying process exhibited by porous materials, namely, an initial constant drying rate period (phase I) followed by a falling drying rate period (phase II). The water diffusivity during phase II, D II , was measured (for Clipsham limestone) to be 3.0 × 10 –9 ± 1 × 10 –10 m 2 s –1 . The CRDS measurements allow spectroscopic determination of the total mass of water released by the sample, and the calculated values are in excellent agreement with gravimetric analysis. Importantly, the selectivity and sensitivity afforded by CRDS allows isotope analysis to be carried out, such that the flux of isotopically labeled water out of the sample can be determined under conditions of humidified flow where there may be a simultaneous ingress of water from the environment. Dual-wavelength CRDS distinguishes isotopic species, and it is demonstrated that the drying kinetics and physical properties of the samples are self-consistent when monitoring both HDO and H 2 O (for HDO, D II was 3.2 × 10 –9 ± 4 × 10 –10 m 2 s –1 ). As the humidity levels in the flow increase, a departure from the distinct two-phase behavior is observed in the HDO drying curves. These new measurements of isotopically resolved mass fluxes will help refine models for drying mechanisms in porous media.

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“…Porosity, sorption and hygroscopic properties and evaporation, have been explored in previous work (Chabas et al, 2018;Saheb et al, 2016).…”

Section: Samplesmentioning

confidence: 99%

Reactivity of secondary phases in weathered limestone using isotopic tracers (D and 18O)

Gentaz¹,

Saheb²,

Verney-Carron³

et al. 2020

Environ Sci Pollut Res

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Water content of limestones submitted to realistic wet deposition: a CIME2 chamber simulation

Cited by 7 publications

References 25 publications

Sources and chronology of soluble salt formation in a medieval dovecote caught up in urbanization: a resilience story?

Sources and chronology of soluble salt formation in a medieval dovecote caught up in urbanization: a resilience story?

Determining Water Transport Kinetics in Limestone by Dual-Wavelength Cavity Ring-Down Spectroscopy

Reactivity of secondary phases in weathered limestone using isotopic tracers (D and 18O)

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