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Effect of ethyl silicate on salt crystallization resistance of Maastricht limestone

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Author: Lubelli, B.A. · Hees, R.P.J. · Nijland, T.G. · Bolhuis, J.
Type:article
Date:2014
Publisher: Royal Institute for Cultural Heritage
Place: Brussel
Source:Clercq, H. De, 3rd International Conference on Salt Weathering of Buildings and Stone Sculptures, 14-16 October 2014, 371-387
Identifier: 517624
ISBN: 978-2-930054-24-7
Keywords: Architecture · Buildings and Infrastructure · Built Environment · Building Engineering & Civil Engineering · SR - Structural Reliability · TS - Technical Sciences

Abstract

consolidant treatments aim to re-establish the cohesion in declayed materials showing decqay patterns as sanding or powdering. Ethyl silicate (TEOS) is the most used type of consolidant for inorganic porous materials in the last 30 years. This product which works through precipitation of silica gel in the pores of the material, is known to have a good chemical compatibility with siliceous substrates (sandstone and brick), but much less with lime based materials as limestone and mortar. In order to encounter this shortcoming, in the last years, research has been focused on the modification of ethyl silicate products to make them more compatible with lime-based substrates