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Simulation of the self-healing of dolomitic lime mortar

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Author: Lubelli, B. · Nijland, T.G. · Hees, R.P.J. van
Source:Materiali in Tehnologije, 3, 46, 291-296
Identifier: 461835
Keywords: Materials · Dolomitic mortar · PFM · Self-healing · SEM-EDX · Buildings and Infrastructure · Built Environment · Building Engineering & Civil Engineering · BM - Building Materials · TS - Technical Sciences


A test procedure was set up to reproduce laboratory self-healing on lime-based (both pure calcium and magnesium-calcium) mortar specimens. After a few months of testing, during which time the specimens were submitted to wet-dry cycles, thin sections of the specimens were prepared and observed using a polarization and fluorescence microscope (PFM) and a scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectrometer (EDX). The specimens prepared with dolomitic lime showed the occurrence of self-healing: a magnesium compound was observed to be filling the cracks and voids. These results suggest new possibilities for the development of dolomitic lime mortars with an increased self-healing capacity.