@misc{10481/58799,
year = {2019},
month = {1},
url = {http://hdl.handle.net/10481/58799},
abstract = {Salt crystallization can produce severe
damage in porous stones, with a dramatic impact on
cultural heritage conservation. Such damage is related
to the fact that repulsive forces arise between the salt
crystals and the pore wall, generating a disjoining
pressure that frequently exceeds the tensile strength of
stone. In this paper, new treatments are proposed,
aimed at preventing salt damage by depositing a thin
layer of polymeric coatings over the stone’s pore
surfaces. These coating are expected to change the
surface chemistry, eliminating the repulsion between
the growing crystals and the pore wall and hence the
development of the disjoining pressure. Several
biopolymers were tested on these substrates: silica
glass, calcite, and calcite subjected to a pre-treatment
with diammonium hydrogen phosphate (DAP), aimed
at preventing calcite dissolution and acting as an
anchoring substrate for the polymer coating. Selected
polymer treatments were applied to porous Globigerina
limestone samples, which were subjected to
crystallization tests with sodium sulfate, obtaining
promising results (i.e., significant reduction in stone
damage), especially when the polymers were applied
after the DAP treatment.},
organization = {This research has
also been funded by the Spanish Government (Grants
CGL2015-70642-R, CGL2015-73103-EXP), the University of
Granada (‘‘Unidad Científica de Excelencia’’ UCE-PP2016-05),
the Junta de Andalucía (P11-RNM-7550), and the research
group RNM-179 of the Junta de Andalucía.},
publisher = {Springer Nature},
keywords = {Salt damage},
keywords = {Sodium sulfate},
keywords = {Disjoining pressure},
keywords = {Hydroxyapatite},
keywords = {Calcite dissolution},
keywords = {Biopolymers},
keywords = {Salt crystallization test},
title = {New polymer-based treatments for the prevention of damage by salt crystallization in stone},
doi = {10.1617/s11527-018-1309-6},
author = {Andreotti, Serena and Rodríguez Navarro, Carlos Manuel and Ruiz Aguado, Encarnación},
}