| Popis: |
Concrete is one of the most common structural materials in the world. The quality of concrete is affected by various conditions and properties. Water-cement ratio (w/c ratio) and curing conditions are two of the most important factors that influence the quality of concrete. Hence, monitoring of the quality of curing is essential for all concrete structures to have information about the concrete condition and prevent errors that can lead to high maintenance costs. Performing non-destructive tests instead of conventional destructive tests is important to save time and high testing costs. Each material in the world has its own special hyperspectral signature that can be considered as a fingerprint. These signatures are provided by recording the reflectance of the light reflected from the specimen, and analyzing this reflectance in a larger wavelength range than human eyes can see. Nowadays, hyperspectral imaging technology is used in many working areas such as in agriculture, food processing, medicine, surveillance, astronomy and so forth. Likewise, some research has been done to identify concrete properties by using this technology. Mixtures with different w/c ratio and different curing treatments were prepared for this project. The effects of the different curing conditions and different w/c ratios on hyperspectral signatures were investigated by comparing the hyperspectral data that were taken on different days after concreting. This project aims to determine an easily implementable, low cost, fast, reliable and non-destructive in-situ testing method to investigate curing quality by using the hyperspectral imaging method. |
