Figure 3From: Calcium hydroxide nanosols for the consolidation of porous building materials - results from EU-STONECOREDistribution of calcium hydroxide nano-particles in mortar samples indicated by the red colour of the phenolphthalein indicator (size = 2 cm × 2 cm), left: immediately after saturation with CaLoSiL NP25, right: after 24 hours.Back to article page