NDLI: Solvent-based ethyl silicate for stone consolidation: influence of the application technique on penetration depth, efficacy and pore occlusion

Content Provider	Springer Nature Link
Author	Franzoni, Elisa Graziani, Gabriela Sassoni, Enrico Bacilieri, Ginevra Griffa, Michele Lura, Pietro
Copyright Year	2014
Abstract	The efficacy of stone consolidating treatments is significantly affected by the application procedure, including the technique used and the amount of product applied. Indeed, in the common on-site practice, consolidants are not applied until ‘apparent refusal’ (i.e. a drastic slowing down of the liquid absorption by the substrate), as usually recommended in commercial products’ technical data sheets and performed in laboratory tests, but a lower number of applications is performed for practical and economic reasons. Nevertheless, the influence of the application procedure on the absorption mechanism and distribution of the consolidant has not been fully elucidated yet, especially for solvent-based products, for which a competition between capillary uptake and solvent evaporation might arise. In this study, the influence of the treatment conditions on the consolidant efficacy was investigated with the aim of determining whether increasing the number of applications results in a deeper penetration depth and remarkably higher mechanical properties or in a higher saturation of the surface layer. For the experimental tests, an organic solvent-based ethyl silicate (or tetra-ethyl-ortho-silicate, TEOS) was selected, as it is the most commonly-used product in stone consolidation. Brushing was selected as the application method, because it is widely used in current practice and because it involves a discontinuous fluid supply to the stone, possibly causing an over-accumulation of product near the surface. Two different treatments were compared: brushing application by 5 strokes (T1) and 10 strokes (T2). The effect of the two treatments, applied on a porous limestone, was evaluated in terms of increase in mechanical properties (tensile strength, resistance to abrasion), alteration in microstructural features (determined by mercury intrusion porosimetry) and penetration depth (assessed by visual inspection of fractured samples, water sorptivity test and dynamic X-ray radiography). The results of the study indicate that increasing the number of TEOS applications from 5 to 10 brush strokes leads to a higher (but less than proportional) increase in mechanical properties (+33 % for T1, +47 % for T2) and a higher penetration depth (7–8 mm for T1, 12–13 mm for T2), while no accumulation of the additional product near the surface and no hard crust formation were found.
Starting Page	3503
Ending Page	3515
Page Count	13
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	48
Issue Number	11
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-09-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic consolidants TEOS Globigerina limestone Mercury intrusion porosimetry Dynamic X-ray radiography Tensile strength 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

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Use of TEOS for fired-clay bricks consolidation

Investigating possible correlations between the porosimetry and insoluble residue content of Malta’s Lower Globigerina Limestone

Characterisation of pore structure by combining mercury porosimetry and micrography

Teos Based Consolidants for Maltese Globigerina Limestone: Effect of Hydroxyl Conversion Treatment

The effect of short duration NaCl exposure on the surface pore structure of concrete containing GGBFS

Pore size distribution of pusan clay measured by mercury intrusion porosimetry

Pore Size Distribution and Surface Multifractal Dimension by Multicycle Mercury Intrusion Porosimetry of GGBFS and Limestone Powder Blended Concrete

Pore structure and permeability of hardened calcium aluminate cement pastes of low w/c ratio

Consolidation of renders and plasters

Solvent-based ethyl silicate for stone consolidation: influence of the application technique on penetration depth, efficacy and pore occlusion

Similar Documents

Use of TEOS for fired-clay bricks consolidation

Investigating possible correlations between the porosimetry and insoluble residue content of Malta’s Lower Globigerina Limestone

Characterisation of pore structure by combining mercury porosimetry and micrography

Teos Based Consolidants for Maltese Globigerina Limestone: Effect of Hydroxyl Conversion Treatment

The effect of short duration NaCl exposure on the surface pore structure of concrete containing GGBFS

Pore size distribution of pusan clay measured by mercury intrusion porosimetry

Pore Size Distribution and Surface Multifractal Dimension by Multicycle Mercury Intrusion Porosimetry of GGBFS and Limestone Powder Blended Concrete

Pore structure and permeability of hardened calcium aluminate cement pastes of low w/c ratio

Consolidation of renders and plasters

Solvent-based ethyl silicate for stone consolidation: influence of the application technique on penetration depth, efficacy and pore occlusion