Pozzolanic mortars for the conservation of old masonry structures

Abstract

Pozzolanic mortars for the conservation of old masonry structures The design of repair mortars started from the characterization of the original mortar samples preserved in small areas in the floors of the Dungeon Tower, Bač Fortress. Two materials (waste brick and clay material) were investigated in order to select the pozzolanic material which later was a component of the repair mortar. Based on the compatibility test of the examined old mortars and of the newly developed mortars, slaked lime based, the mortar with the ground waste brick as a pozzolanic material was selected for the conservation treatment of the Dungeon Tower.

Bio-Stimulated Surface Healing of Historical and Compatible Conservation Mortars

“…During the carbonation/hydration process, a contact zone without cracks was formed between the original (HM) and the new (MM) sample. The morphology investigation, as shown in Figure 5 , of the contact zone showed that the formed area had a satisfactory appearance (without cracks) [ 6 , 21 ].…”