conservation scientists testing grouts Injection Grouts for the Conservation of Architectural Surfaces: Research and Evaluation
 

Beril Bicer-Simsir (left) GCI assistant scientist, and Giorgio Torraca (right), conservation scientist testing the injectability device, which assesses the degree of ease with which a grout can be injected through a column of crushed brick, travertine, or sand. Photo: Leslie Rainer.