Current Trends in Stone Consolidation Research: An Overview and Discussion

This work aims to reveal the recent research trends in the consolidation of stone-built heritage and discuss the advantages and drawbacks of the options and strategies followed by researchers over the last 10 years. Peer-reviewed articles were used to build a database and analyze the details of the...

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Main Author: B. Sena da Fonseca
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Buildings
Subjects:
Online Access:https://www.mdpi.com/2075-5309/13/2/403
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author B. Sena da Fonseca
author_facet B. Sena da Fonseca
author_sort B. Sena da Fonseca
collection DOAJ
description This work aims to reveal the recent research trends in the consolidation of stone-built heritage and discuss the advantages and drawbacks of the options and strategies followed by researchers over the last 10 years. Peer-reviewed articles were used to build a database and analyze the details of the stone samples (chemical nature, type of voids, and condition), treatment protocols (application methods and consolidation products), and testing methods to assess the strengthening results of the treatments. In addition, the reported increments in the mechanical properties were also examined to reveal the strengthening capabilities of recent consolidation treatments. The statistical treatment of the results allowed pinpointing the stone varieties that need more frequent consolidation actions (limestone, biocalcarenite, and sandstone) and the aspects that make them more difficult and riskier. Other tendencies were discussed, for example, the predominant use of sound samples over decayed samples (61% vs. 39%) or the predominant use of alkoxysilanes (~46%) over other families of consolidants (e.g., nanolime, ~21%). The current consolidation treatments were found to improve stone strength; however, the most problematic issue in state-of-the-art is the difficulty of identifying high-risk situations of over-consolidation or poor distribution in depth because of either the lack of testing or limitations of the various assessment techniques.
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spelling doaj.art-1d788a8c2774425a8b04a5ac209c1ff82023-11-16T19:32:07ZengMDPI AGBuildings2075-53092023-02-0113240310.3390/buildings13020403Current Trends in Stone Consolidation Research: An Overview and DiscussionB. Sena da Fonseca0Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, PortugalThis work aims to reveal the recent research trends in the consolidation of stone-built heritage and discuss the advantages and drawbacks of the options and strategies followed by researchers over the last 10 years. Peer-reviewed articles were used to build a database and analyze the details of the stone samples (chemical nature, type of voids, and condition), treatment protocols (application methods and consolidation products), and testing methods to assess the strengthening results of the treatments. In addition, the reported increments in the mechanical properties were also examined to reveal the strengthening capabilities of recent consolidation treatments. The statistical treatment of the results allowed pinpointing the stone varieties that need more frequent consolidation actions (limestone, biocalcarenite, and sandstone) and the aspects that make them more difficult and riskier. Other tendencies were discussed, for example, the predominant use of sound samples over decayed samples (61% vs. 39%) or the predominant use of alkoxysilanes (~46%) over other families of consolidants (e.g., nanolime, ~21%). The current consolidation treatments were found to improve stone strength; however, the most problematic issue in state-of-the-art is the difficulty of identifying high-risk situations of over-consolidation or poor distribution in depth because of either the lack of testing or limitations of the various assessment techniques.https://www.mdpi.com/2075-5309/13/2/403built heritagedecayconservationtreatmentsmechanical strengthstrengthening capability
spellingShingle B. Sena da Fonseca
Current Trends in Stone Consolidation Research: An Overview and Discussion
Buildings
built heritage
decay
conservation
treatments
mechanical strength
strengthening capability
title Current Trends in Stone Consolidation Research: An Overview and Discussion
title_full Current Trends in Stone Consolidation Research: An Overview and Discussion
title_fullStr Current Trends in Stone Consolidation Research: An Overview and Discussion
title_full_unstemmed Current Trends in Stone Consolidation Research: An Overview and Discussion
title_short Current Trends in Stone Consolidation Research: An Overview and Discussion
title_sort current trends in stone consolidation research an overview and discussion
topic built heritage
decay
conservation
treatments
mechanical strength
strengthening capability
url https://www.mdpi.com/2075-5309/13/2/403
work_keys_str_mv AT bsenadafonseca currenttrendsinstoneconsolidationresearchanoverviewanddiscussion