Abstract

The modern consolidating agents, used in the care of cultural heritage for the past 20 years, include dispersion and colloid systems of not only organic consolidants, but also mineral systems with particle sizes in nano-dimensions. Among these materials, calcium hydroxide nanodispersion plays an important role. The compatibility of the consolidant with the lime-based original building material, deep penetration due to the particle size, and no mobilisation of soluble salts are advantages attributed to alcoholic lime nanodispersions. The assessment of the consolidating efficiency of the tested products are based on performance of both the destructive and the non-destructive laboratory tests. The penetration depth, thermal and moisture expansion, material strength, abrasion, modulus of elasticity, vapor permeability, microstructure (porosity, pore distribution and interconnection) and density can be listed as monitored criteria. For historical material is also important to monitor the change of color or texture on visible surface of the material. The paper presents a partial result of the NAKI II DG16P02M005 research project dealing with the verification of potential use of selected lime nanosuspensions (newly prepared calcium hydroxide nanosuspensions in alcohols and market available lime-nanodispersion CaLoSiL®) for the consolidation of historic lime based materials. The paper presents a comparative laboratory and experimental study on the effects of three different calcium hydroxide based agents on consolidating a porous limestone.

Details

Title
CONSOLIDATION OF NATURAL STONE WITH CALCIUM HYDROXIDE NANOSUSPENSION IN ETHANOL AND VERIFICATION OF SURFACE HARDENING RATE
Author
KROFTOVÁ, KLÁRA; Škoda, David; WITZANY, JIŘÍ; ČEJKA, TOMÁŠ
Pages
359-367
Publication year
2019
Publication date
2019
Publisher
W I T Press
ISSN
1746-4498
e-ISSN
1743-3509
Source type
Other Source
Language of publication
English
ProQuest document ID
2389761175
Copyright
© 2019. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the associated terms available at https://www.witpress.com/elibrary .