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Open Access item Kinetics of Sodium Sulfate as observed by humidity cycling with ESEM

Authors:López-Arce, Paula
Doehne, Eric
Issue Date:Jun-2006
Publisher:Consejo Superior de Investigaciones Científicas (España)
Citation:Heritage, Weathering and Conservation Conference (HWC2006)
Abstract:[Background] Fluctuations of atmospheric conditions cause dehydration and hydration of hygroscopic salts, leading to expansion and contraction that results in fatigue stress of the porous material (Overmiller, 1926 in Shaffer 1932; Arnold & Zehnder 1988; Charola & Weber, 1992).
[Objective] Quantify reaction kinetics and morphological changes for sodium sulfate transition from decahydrate phase Mirabilite (Na2 SO4 x 10H2O) to a microcrystalline powder of anhydrous Thenardite (Na2 SO4) due to relative humidity cycling in ESEM (Doehne, 1994).
Description:15 slides.-- Communication presented in: Heritage, Weathering & Conservation Conference (Madrid, June 21-24, 2006).
Appears in Collections:(IGE) Comunicaciones congresos

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