Fig. 15From: On-site monitoring for better selection of stone repairs: a case studyMechanism proposed for the spalling process in a drying stone. a Pre-existence of a flaw at a certain depth. b The drying front reaches the flaw. Drying stresses (P) provoke a propagation of the fracture by mode II. c Delamination reaches the edge and leads to a curled superficial layer (“peeling”)Back to article page