Abstract Dissolution in pure and acid rain is among the main environmental degradation processes of marble. Coatings based on hydroxyapatite (HAP) have been proposed to prevent marble corrosion, providing encouraging results. In this paper, the resistance to dissolution was investigated on marble treated with different HAP-treatment formulations and compared to commercial ammonium oxalate. The ability of the coating to prevent corrosion was evaluated by performing wetting/drying cycles, by a custom-designed apparatus simulating rain. When ethanol is added to the solution used to form HAP, a significant reduction in calcium ions leached from marble is found, which is indicative of reduced corrosion.

中文翻译：

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用于保护大理石免受腐蚀的羟基磷灰石和草酸钙基涂料的抗模拟雨水性能

摘要 在纯雨和酸雨中溶解是大理石主要的环境退化过程之一。已经提出基于羟基磷灰石 (HAP) 的涂层来防止大理石腐蚀，并提供了令人鼓舞的结果。在本文中，研究了用不同 HAP 处理配方处理的大理石的抗溶解性，并与商业草酸铵进行了比较。涂层防止腐蚀的能力通过使用定制设计的模拟雨水的设备进行润湿/干燥循环来评估。当将乙醇添加到用于形成 HAP 的溶液中时，发现从大理石中浸出的钙离子显着减少，这表明腐蚀减少。