NDLI: Use of TEOS for fired-clay bricks consolidation

Content Provider	Springer Nature Link
Author	Franzoni, Elisa Pigi, Barbara Leemann, Andreas Lura, Pietro
Copyright Year	2013
Abstract	Ethyl silicate (tetraethylorthosilicate, TEOS) is one of the most used consolidants for natural stones in the restoration of architectural and cultural heritage and the literature concerning its performance in this application is quite abundant. In this paper, the need, and sometimes urgency, of preserving ancient fired-clay elements (bricks and terracotta decorations) is highlighted as well, and the effects of ethyl silicate consolidation (75 wt% TEOS in white spirit) are investigated from a microstructural, physical–mechanical and aesthetic point of view. Fired-clay brick samples (open porosity ≈45 %; compressive strength ≈14 N/mm$^{2}$) were treated and then characterized by mercury intrusion porosimetry, scanning electron microscopy, water absorption, compressive strength test and spectrophotometry, to assess the effects of the treatment. The TEOS treatment gave encouraging results: a good penetration depth (about 10 mm), a limited reduction in porosity, a large decrease in water absorption, a significant improvement in compressive strength and a positive aesthetic outcome. The results obtained pointed out TEOS treatment as a promising solution for fired-clay bricks consolidation.
Starting Page	1175
Ending Page	1184
Page Count	10
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	47
Issue Number	7
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-06-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fired-clay bricks Decay Ethyl silicate Ancient masonries Consolidation Architectural restoration Structural Mechanics Materials Science Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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