การใช้ระบบวิเคราะห์สเปคตรัมของรังสีอินฟราเรดแบบใกล้เพื่อตรวจสอบการเสื่อมสภาพคอนกรีต

Abstract

The near-infrared spectral imaging system is used to investigate chemical compositions of different types of specimens. Chemical compositions of cement paste specimen containing chloride ions, concrete specimen which was kept in marine environment, as well as the cement paste and mortar specimens which are deteriorated by sulfuric acid can be successfully measured by the NIR spectral imaging system.

The method can be also applied to evaluate the quality of concrete surface coating work. In addition, this technique can be employed with special instrument in order to measure a chemical composition of concrete structure at different depths.