Monitoring consumption of calcium hydroxide via a new approach

Abstract

In this computer-based experimental study, tracking the consumption of calcium hydroxide was carried out via a novel image processing approach done first in the literature. To do this, eight different cement mortars including four different mineral admixtures were produced and their fundamental mechanical and microstructural properties were investigated. After this step, these results were evaluated via an image processing approach. Regardless of curing age, test results show that there was a correlation between color pixels and fundamental mechanical and microstructural properties of cement mortars. Minimum and maximum differences between pixel indexes of R-G and B-G channels for the curing age of 7 days were determined as 11 and 30 while they were 9 and 22 for the curing age of 28 days. As expected, this is because CH is consumed as curing age goes by, comparatively a lighter pink/purple colour was observed in curing age of 7 days comparing to curing age of 28 days. Therefore, the advised current image processing approach made it possible to acquire a basic fundamental basis in terms of being a supplementary approach for destructive and non-destructive testing methods in terms of monitoring the consumption of CH.