首页|Surface imaging based non-destructive assessment of concrete deterioration using hue-saturation-intensity colour space
Surface imaging based non-destructive assessment of concrete deterioration using hue-saturation-intensity colour space
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NSTL
Elsevier
? 2022 Elsevier LtdThis study presents a methodology for imaging-based quantification of deterioration in concrete structures due to various chemical attacks, using HSI colour space. In this study, M30 grade of concrete samples are exposed to various deterioration agents like 5% concentrated solutions of NaCl, HCl, H2SO4 and MgSO4 for a period of 3,7,14 and 28 days respectively. The changes in surface colour profiles over time, due to chemical attack, are quantified within the HSI space. The numerical values of H show a little variation in the range of chemical exposure studied in the research. However, when combined with the variations of S and I, the deterioration of concrete structures can be assessed. Further, the correlation between the change of surface colour and deterioration of compressive strength is established by destructive testing. The change in surface colour between any two time intervals enables identification of the specific attacking chemical and estimation of the duration of attack as well as the residual strength of concrete. This novel approach enables establishment of empirical relationships between HSI values and residual compressive strength, towards visual-spectrum based quantification of the extent and duration of deterioration.
Chemical attackConcreteCondition assessmentDigital imagingDurabilityHSI
Guru Prathap Reddy V.、Tadepalli T.、Kumar Pancharathi R.
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Department of Civil Engineering National Institute of Technology Warangal
NSTL
Elsevier
