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Artificial weathering and non-destructive tests for the performance evaluation of consolidation materials applied on porous stones



Title: Artificial weathering and non-destructive tests for the performance evaluation of consolidation materials applied on porous stones
Author(s): A. Moropoulou, G. Haralampopoulos, T. Tsiourva, F. Auger, J. M. Birginie
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 36
Issue: 258
Issue date: 2003-05-01
Publication year: 2003
Pages: 210 - 217
Total Pages: 8
Nb references: 14
Language: English


Abstract: The evaluation of consolidation treatment efficiency in terms of improving the resistance of treated lithotypes to deterioration phenomena caused by soluble salts crystallisation, is taking place through dynamic artificial weathering accelerated tests of marine salt spray.
Quarried biocalcarenites from Greece and Cyprus have been treated with four consolidation materials (diversified according to their deposition mechanism).
The materials applied are colloidal dispersion of silica, pre-hydrolysed ethyl silicate with amorphous silica, ethyl silicate in ethanol and acrylsiliconic resin in organic solvents.
The treated stone samples are placed in an artificial weathering chamber, where they remain for nearly two months, being attacked by severe quantities of marine salt spray.
The application of non-destructive techniques (weight and ultra sonic velocity measurements, deteriorated surface analysis by a cameralaser scanning system) during the salt spray simulations verif ied the improvements presented to the consolidated biocalcarenite samples in comparison to the untreated ones.
Consolidated samples present weight stability during the tests, increase in ultra sonic velocity and minor fluctuations on it, and less roughness increase and grain detachment during the simulations.
Deductions among the consolidants are made indicating the superiority of ethyl silicate as an appropriate consolidant for those biocalcarenites, as it has arisen from these certain tests.


Online publication: 2003-03-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13773


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