Inhibiting Effect of Additives on Pressure Solution of Calciteстатья

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Дата последнего поиска статьи во внешних источниках: 2 января 2019 г.

Работа с статьей

[1] Inhibiting effect of additives on pressure solution of calcite / V. Traskine, Z. Skvortsova, G. Badun et al. // Journal of Materials Engineering and Performance. — 2018. — Vol. 27, no. 5. — P. 1–5. The task of protection of cultural heritage requires a better understanding of combined effects of mechanical and chemical factors involved in environmental deterioration of monuments. The present paper deals with extending some known physicochemical methods proposed for inhibiting the decay of unstressed materials to their study during water-assisted deformation. The tests have been carried out on natural limestone samples and calcite powders in CaCO3 saturated aqueous solutions under static loads causing measurable pressure solution creep. In the solutions containing 1-hydroxyethylidene-1,1-diphosphonic acid, nitrilotriacetic acid, or ethylenediaminetetraacetic acid, the creep rate decreases considerably with increasing concentration of additives. The extent of creep deceleration has been found to be proportional to the independently estimated calcite surface area occupied by adsorbed species. This fact enables us to discriminate the adsorption-induced effect from other variables controlling the pressure solution rate and may be used in screening of compounds able to minimize the environmental impact on marble and limestone objects undergoing mechanical stresses. [ DOI ]

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