Synthetic calcium carbonate improves the effectiveness of treatments with nanolime to contrast decay in highly porous limestone.

ABSTRACT: Three synthetized polymorphs of calcium carbonate have been tested in combination with the suspension of nanolime particles as potential consolidating agents for contrasting stone decay and overcome some of the limitations of nanolime agents when applied to substrates with large porosity. The modifications induced in the pore network of the Maastricht limestone were analyzed with microscopy and in a non-invasive fashion with small angle neutron scattering and synchrotron radiation micro-computed tomography. A reduction in porosity and pore accessibility at the micrometric scale was detected with the latter technique, and ascribed to the improved pore-filling capacity of the consolidation agent containing CaCO₃ particles. These were found to be effectively bound to the carbonated

SUBMITTER: Sevcik R 

PROVIDER: S-EPMC6813344 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature