Assessment of masonry strength in a heritage building

Holický, Milan; Hrabánek, Milan; Kolı́sko, Jiřı́; Sýkora, Miroslav

doi:10.2495/978-1-84564-839-8/004

Cited by 2 publications

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“…In the verification of historic structures, however, it may lead to costly repairs and, potentially, also to the loss of a heritage value (ICOMOS 2003). Holický et al (2009), Mojsilovic and Faber (2009), Stewart and Lawrence (2007), Sykora and Holicky (2010) recommended using probabilistic methods for the assessment of masonry strength. In comparison with deterministic methods, the probabilistic approach allows a rational consideration of:…”

Section: Evaluation Of Masonry Strengthmentioning

confidence: 99%

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Witzany

Čejka

Sýkora

et al. 2015

Journal of Civil Engineering and Management

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The identification of residual service life of a structure is an exceptionally demanding task in the case of reconstructed or newly modernised buildings. The identification of residual service life requires the study and knowledge of the mutual interaction of a building with its external environment, in particular, the time variable effects and impacts which lead to degradation processes and phenomena affecting and, in the absolute majority of cases, degrading the physical, mechanical and other properties of materials and structures. The article presents the results of in-situ and laboratory research of strength parameters of masonry from the start of the 20th century applying destructive and non-destructive tests. Besides, a probabilistic model and a procedure for the determination of masonry strength are described. It appears that the probabilistic approach leads to a design value by ca 5% higher than the deterministic approach.

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Section: Evaluation Of Masonry Strengthmentioning

confidence: 99%

Untitled

Witzany

Čejka

Sýkora

et al. 2015

Journal of Civil Engineering and Management

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“…It has been recognised that the partial factor method tends to be conservative in the assessment of existing structures. This may lead to costly repairs and losses of the heritage value in the case of historic structures (Stewart, Lawrence 2002Mojsilovic, Faber 2009;Holický et al 2009; Sykora, Holicky 2010) recommended using probabilistic methods for the assessment of masonry strength to facilitate the description of: -Randomness of material characteristics of masonry units and mortar; -Statistical uncertainties due to a limited number of tests; -Inaccuracies of testing methods; -Simplifications in the model for masonry strength (model uncertainty). The obtained experimental results are further applied in the probabilistic assessment of masonry strength.…”

Section: Evaluation Of Masonry Strengthmentioning

confidence: 99%

Assessment of Compressive Strength of Historic Mixed Masonry

Witzany

Čejka

Sýkora

et al. 2015

Journal of Civil Engineering and Management

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The majority of load-bearing masonry structures of historic buildings are built of mixed or stone masonry composed of regular or irregular (so-called quarry) masonry units – bricks, sedimentary and metamorphic rock – possessing often very different physical and mechanical characteristics. The identification of residual mechanical properties of stone or mixed masonry of irregular walling units requires the application of a suitable diagnostic method, the assessment of the phase of degradation processes and the choice of an appropriate probabilistic model for the strength of mixed masonry. The presented experimental research involves the analysis of the heterogeneity (homogeneity) of mixed masonry of a church from the 17th century. The probabilistic model for masonry strength is developed on the basis of destructive and non-destructive testing of masonry units and mortar. It appears that the probabilistic approach leads to a design value by 75% higher than the deterministic approach.

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Assessment of masonry strength in a heritage building

Cited by 2 publications

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Assessment of Compressive Strength of Historic Mixed Masonry

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