Although Raman spectroscopy is a common technique for the analysis of cement-based materials in the research studies or in the field of Cultural Heritage to carried out multianalytical studies, it is not generally used as unique technique of a research or to carry out analysis during ordinary restoration works of modern urban buildings affected by environmental stressors. The disadvantages associated with Raman spectroscopy as fluorescence limits its implementation beyond research studies, more in the case of in situ equipment. However, the technological development allows high-quality results with in situ equipment, so its use could be useful during restoration works. Thus, this work demonstrates how the implementation of the correct methodology could lead to useful and fast results during restoration works. The proposed methodology is based on the use of in situ analysis (screening) on the scaffolding, followed by the sampling of layers based on the previous screening and a posterior exhaustive laboratory analysis. The research has been conducted during the restoration works of a reinforced concrete building in which the attack of atmospheric acid gases (CO₂, SO₂, and NO_x) was identified as the main affection suffered, and the fixed sulfates were the most important intermediary compounds of decaying processes. Many of the pollutants and decaying compounds were even identified during the in situ analysis, improving the anticipation and responsiveness. Therefore, this methodology allows the understanding of the chemistry of the materials to evaluate its health state in a fast and reliable way.

中文翻译：

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原位拉曼光谱在修复工程中现代建筑水泥基材料健康研究中的潜力

虽然拉曼光谱是研究或文化遗产领域中水泥基材料分析的常用技术，以进行多分析研究，但它通常不作为研究的独特技术或在普通情况下进行分析。受环境压力因素影响的现代城市建筑的修复工程。与荧光拉曼光谱相关的缺点限制了其在研究之外的实施，更多的是在原位设备的情况下。然而，技术发展允许使用原位设备获得高质量的结果，因此在修复工作中使用它可能很有用。因此，这项工作展示了正确方法的实施如何在恢复工作期间产生有用和快速的结果。建议的方法基于在脚手架上使用原位分析（筛选），然后根据先前的筛选和后验详尽的实验室分析对层进行采样。该研究是在钢筋混凝土建筑的修复工程中进行的，其中大气酸性气体（CO₂、SO ₂和NO _x ) 被确定为受到的主要影响，固定硫酸盐是衰变过程中最重要的中间化合物。许多污染物和腐烂的化合物甚至在原位分析过程中被识别出来，从而提高了预期和响应能力。因此，这种方法允许了解材料的化学性质，以快速可靠的方式评估其健康状态。