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Modification of Water Transport Properties of Porous Building Stones Caused by Polymerization of Silicon-based Consolidation Products by Ioannis Karatasios; Anastasia Michalopoulou; Maria Amenta; Vassilis Kilikoglou is a Chemistry article available to read on EtoBox.

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## Abstract This work studies the polymerization process of four different commercially available silicon-based polymers and their consequent effect on surface tension and water transport properties of natural stones used in architectural monuments, essential for modeling and predicting the durability of natural stones against weathering action of aqueous solutions. The four products studied consisted of two ethyl-silicate based materials, an alkyl-alkoxy siloxane oligomer with hydrophobic agents and finally, a silane/siloxane emulsion. In all cases, the morphology of the amorphous material deposited into the pore network of stones was examined by electron microscopy (SEM). The polymerization process was studied by infrared spectroscopy (FTIR) on both inert surface and porous stone substrate. The treated stone specimens were further tested after polymerization in terms of determination and comparison of water absorption coefficient, open porosity, pore size distribution (mercury intrusion porosimetry) and surface tension (contact angle measurements) properties. According to the analysis, the modification of the wetting properties of the stone surface should be related rather with t

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Author

Ioannis Karatasios; Anastasia Michalopoulou; Maria Amenta; Vassilis Kilikoglou

Publisher

International Union of Pure and Applied Chemistry; Walter de Gruyter GmbH; Wiley (ISSN 0033-4545)

Published

2017

Language

EN

Field

Chemistry (Physical Sciences)