Weathering and consolidation trials on sandstones used in Irish Monuments.
Citation:
P. Kissane, S. Pavia., Weathering and consolidation trials on sandstones used in Irish Monuments., 1st International Conference on Construction Heritage in Coastal and Marine Environments, Lisbon, Jan 2008, , LNEC, Laboratorio Nacional de Engenharia Civil, Lisbon, 2008Download Item:
MedacsLisbonJan2008073_th6.pdf (published (author copy) peer-reviewed) 616.1Kb
Abstract:
The objective of this study was to assess the efficiency of consolidant treatments in improving the
durability of Irish sandstones, particularly sandstones used in national monuments at Cashel,
Clonfert and Clonmacnoise. Although not located directly on the coast, these sites have been
severely exposed to combinations of wind-driven rain, high levels of moisture from groundwater
and salt decay. Samples of the sandstones were characterised and artificially weathered. The
majority of salts were washed from the samples and they were then treated with alkoxysilane
consolidant treatments.
Consolidant treatments were modified by the addition of solvents and nanoparticles; the former to
aid penetration in low porosity samples and reduce film thickness, the latter to increase the gel?s
elastic modulus, improving cohesion and shrinkage resistance. Further weathering tests were also
carried out in order to compare the durability of the treated and untreated samples. Surfacesubstrate
interface stresses due to poor penetration of consolidant were observed.
According to the results of this research, the alkoxysilane consolidants improved cohesion
between constituents and the stone?s durability to both thermal and crystallisation stresses.
Author's Homepage:
http://people.tcd.ie/paviasDescription:
PUBLISHEDLisbon
Author: PAVIA, SARA
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1st International Conference on Construction Heritage in Coastal and Marine EnvironmentsPublisher:
LNEC, Laboratorio Nacional de Engenharia Civil, LisbonType of material:
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