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Evaluation of silicon-based strengthening agents on porous limestones

Maravelaki Pagona, Kallithrakas-Kontos Nikolaos, Korakaki Dimitra, Agioutantis Zacharias, Mavrigiannakis Stelios

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URIhttp://purl.tuc.gr/dl/dias/60BAE75A-1A95-4674-9D7D-1EDFA33F66D8-
Identifierhttps://doi.org/10.1016/j.porgcoat.2006.08.007-
Identifierhttps://www.sciencedirect.com/science/article/pii/S0300944006001573-
Languageen-
Extent9 pagesen
TitleEvaluation of silicon-based strengthening agents on porous limestonesen
CreatorMaravelaki Pagonaen
CreatorΜαραβελακη Παγωναel
CreatorKallithrakas-Kontos Nikolaosen
CreatorΚαλλιθρακας-Κοντος Νικολαοςel
CreatorKorakaki Dimitraen
CreatorΚορακακη Δημητραel
CreatorAgioutantis Zachariasen
CreatorΑγιουταντης Ζαχαριαςel
CreatorMavrigiannakis Steliosen
CreatorΜαυριγιαννακης Στελιοςel
PublisherElsevieren
DescriptionΔημοσίευση σε επιστημονικό περιοδικόel
Content SummaryDeteriorated porous bioclastic limestones from the archaeological area of Aptera, Crete, Greece, were treated with silicon-based strengthening products, tetraethoxysilanes, elastified silicic acid ethyl esters, an aqueous colloidal dispersion of silica particles, as well as an oligomeric siloxane water repellent. Changes in color, water vapor permeability, water absorption by capillary suction, porosity and pore size distribution were evaluated after treatment. Energy dispersive X-ray fluorescence and Fourier transform infrared spectroscopy indicate the penetration depth of the applied products. The effectiveness of strengthening was also evaluated by measuring the tensile strength. The pore size distribution was insignificantly modified decreasing only the ratio of coarse pores. The applied products penetrated up to a depth of 30 mm. All the studied products create linkages across the interface between calcite and the alkoxysilanes-derived gels, due to the hydroxyl groups of the quartz included in the limestones. Better reinforcing results were obtained by applying the elastified silicic acid ethyl ester. The elastified silicic acid ethyl ester confers chromatic stability on the stone, shows insignificant modification of the water vapor permeability and reduces the absorbed quantity of water.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-10-08-
Date of Publication2006-
SubjectStrengthening agentsen
SubjectPorous limestonesen
SubjectPenetration depthen
SubjectEDXRFen
SubjectPore size distributionen
SubjectElastified silicic acid ethyl esteren
Bibliographic CitationP. Maravelaki-Kalaitzaki, N. Kallithrakas-Kontos, D. Korakaki, Z. Agioutantis and S. Maurigiannakis, "Evaluation of silicon-based strengthening agents on porous limestones," Prog. Org. Coat., vol. 57, no. 2, pp. 140–148, Oct. 2006. doi: 10.1016/j.porgcoat.2006.08.007en

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