Performance of Repair Mortars used in Bed Joints of Masonry Piers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00232997" target="_blank" >RIV/68407700:21110/15:00232997 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.ctresources.info/ccp/paper.html?id=8613" target="_blank" >http://www.ctresources.info/ccp/paper.html?id=8613</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4203/ccp.108.55" target="_blank" >10.4203/ccp.108.55</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Performance of Repair Mortars used in Bed Joints of Masonry Piers

Popis výsledku v původním jazyce

The conservation and repair of architectural heritage is becoming more of an issue as a result of numerous improper interventions and use of inappropriate repair materials. Just recently, it has been accepted that Portland cement mortars, extensively exploited in the past decades, are not suitable for restoration of ancient masonry structures because of their chemical, physical, mechanical, and aesthetic incompatibility with the original materials. Therefore, the engineers involved in protection of architectural heritage require mortars of a similar chemical composition and mechanical properties as the traditionally used ones. The present paper is focused on the performance of different mortars intended for repairs of historic structures, when subjected to mechanical loading. In particular, an integrated experimental-numerical approach was pursued to identify the key mortar parameters influencing the mechanical resistance of masonry piers loaded by a combination of compression and bending. Results from both, numerical modeling and experimental analysis, indicate that the use of metakaolin as a pozzolanic additive produces mortars with superior strength with a reasonable shrinkage, and their use makes masonry significantly more resistant to mechanical loading. Moreover, the mortar performance can be enhanced by an addition of crushed brick fragments, which explains the longevity of Roman mortars rich in pozzolans and fragments of crushed clay products, such as tiles, pottery or bricks.

Název v anglickém jazyce

Performance of Repair Mortars used in Bed Joints of Masonry Piers

Popis výsledku anglicky

The conservation and repair of architectural heritage is becoming more of an issue as a result of numerous improper interventions and use of inappropriate repair materials. Just recently, it has been accepted that Portland cement mortars, extensively exploited in the past decades, are not suitable for restoration of ancient masonry structures because of their chemical, physical, mechanical, and aesthetic incompatibility with the original materials. Therefore, the engineers involved in protection of architectural heritage require mortars of a similar chemical composition and mechanical properties as the traditionally used ones. The present paper is focused on the performance of different mortars intended for repairs of historic structures, when subjected to mechanical loading. In particular, an integrated experimental-numerical approach was pursued to identify the key mortar parameters influencing the mechanical resistance of masonry piers loaded by a combination of compression and bending. Results from both, numerical modeling and experimental analysis, indicate that the use of metakaolin as a pozzolanic additive produces mortars with superior strength with a reasonable shrinkage, and their use makes masonry significantly more resistant to mechanical loading. Moreover, the mortar performance can be enhanced by an addition of crushed brick fragments, which explains the longevity of Roman mortars rich in pozzolans and fragments of crushed clay products, such as tiles, pottery or bricks.

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/DF11P01OVV008" target="_blank" >DF11P01OVV008: Vysokohodnotné a kompatibilní vápenné malty pro extrémní aplikaci při restaurování, opravách a preventivní údržbě architektonického dědictví</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing

ISBN

978-1-905088-63-8

ISSN

1759-3433

e-ISSN

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Počet stran výsledku

12

Strana od-do

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Název nakladatele

Civil-Comp Press Ltd

Místo vydání

Stirling

Místo konání akce

Praha

Datum konání akce

1. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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