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Inhibiting Effect of Additives on Pressure Solution of Calcite

机译：添加剂对方解石压力溶液的抑制作用

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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 CaCO~(3)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.
机译：保护文化遗产的任务需要更好地了解纪念碑环境恶化所涉及的机械和化学因素的综合影响。本文涉及延长一些已知的物理化学方法，提出用于在水辅变形期间抑制未经重点材料的衰减。在静态载荷下在CaCo〜（3）饱和水溶液中的天然石灰石样品和方解石粉末进行了测试，导致可测量的压力溶液蠕变。在含有1-羟基乙烯-1,1-二膦酸的溶液中，随着添加剂浓度的增加，蠕变率显着降低。已经发现蠕变减速度的程度与被吸附物种占据的独立估计的方解石表面积成比例。这一事实使我们能够在控制压力溶液速率的其他变量中区分吸附诱导的效果，并且可以用于筛选能够最小化对经受机械应力的大理石和石灰石物体对大理石和石灰石物体的环境影响的化合物。

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