Fig. 13: SEM images of grout concretion specimens at 28 days.
From: Calcined clay’s effect on the performance and mechanism of natural hydraulic lime grouting material
a NHL2, b T500–30%, c T700–30%, d T900–30%, e T700–5%, f T700–10%, g T700–20%.
Fig. 13: SEM images of grout concretion specimens at 28 days. | npj Heritage Science
