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Influence of animal glue on mineralogy, strength and weathering resistance of lime plasters

Authors :
Cristina Benavides-Reyes
Rosa Maria García Sánchez
Kerstin Elert
Fátima Linares Ordóñez
Source :
Construction and Building Materials. 226:625-635
Publication Year :
2019
Publisher :
Elsevier BV, 2019.

Abstract

In order to optimize lime plasters for conservation purposes, the influence of animal glue on the mineralogical evolution, mechanical properties, and weathering resistance was studied. The organic additive caused a decrease in carbonation rate and affected mechanical properties negatively, facilitating the formation of large air bubbles in the plaster matrix. However, the weathering resistance (water spraying/SO2 exposure) improved significantly. The organic additive also reduced crack formation and formed a physical barrier around the calcite crystals, which delayed sulfation. Lime-based composite materials are a valuable alternative to conventional lime plasters, showing improved adherence to the substrate and no significant color changes.

Details

ISSN :
09500618
Volume :
226
Database :
OpenAIRE
Journal :
Construction and Building Materials
Accession number :
edsair.doi...........f3b9c1ae6bd0e1366cc15c63f04399db
Full Text :
https://doi.org/10.1016/j.conbuildmat.2019.07.261