Image-based deterioration analysis deals with estimating the correlation between the extent of deterioration in terms of changes in colour profiles of deteriorated surfaces with changes in the residual strength and durability. Analysis was performed on images of cubes of concrete immersed in acid, chloride and sulphate at 5% concentration for a period of 3, 7, 14 and 28 days. The colour profiles of deteriorated surfaces are analysed in CIE-XYZ colour space, and the respective chromaticity diagrams are investigated. The nature of change in the colour profile for respective immersion was investigated, attaining to the sample's absorption rate of the reagent, reagent concentration that was required to initiate chemical reactions and their respective reactivity rates. This study thus enables image-based identification of damage, analytical and non-subjective evaluation of the extent of deterioration and provides an insight into the interrelationship between the extent of deterioration and the performance in terms of strength and durability.

中文翻译：

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一种使用比色法分析混凝土劣化评估的新方法

基于图像的劣化分析处理评估劣化程度与劣化表面颜色轮廓变化与残余强度和耐久性变化之间的相关性。对浸入浓度为 5% 的酸、氯化物和硫酸盐中 3、7、14 和 28 天的混凝土立方体的图像进行了分析。在 CIE- XYZ中分析劣化表面的颜色配置文件颜色空间，并研究了各自的色度图。研究了每次浸泡时颜色轮廓变化的性质，获得了样品对试剂的吸收率、引发化学反应所需的试剂浓度及其各自的反应率。因此，这项研究能够基于图像识别损坏、分析和非主观评估劣化程度，并深入了解劣化程度与强度和耐久性性能之间的相互关系。