Optimising In-situ Testing for Historic Masonry Structures: a Case Study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F19%3A00331089" target="_blank" >RIV/68407700:21610/19:00331089 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Optimising In-situ Testing for Historic Masonry Structures: a Case Study

Original language description

Masonry structures were built by means of various techniques, using materials whose properties exhibit a considerable scatter depending on the period of construction, regionspecific soil resources and manufacturing procedures. Significant spatial variability within the structural system is often observed due to diverse deterioration mechanisms. Therefore, it is important to obtain case-specific information on the mechanical properties of existing masonry structures. The case study of a historic building illustrates how the number of destructive tests (DTs) used to calibrate non-destructive tests (NDTs) can be optimised for the reliability assessment. Calibrated NDTs are used to establish the probabilistic model for compressive masonry strength. The specific focus is on compressive strength of masonry units; tests of mortar strength are only briefly discussed. The preliminary assessment is based on non-calibrated NDTs. The number of DTs for calibration is then optimised by means of probabilistic cost optimisation, considering also possible subsequent actions – `do nothing’ or `strengthen the structure’. It appears that the estimates of masonry unit strength based on NDTs are associated with large dispersion and may be significantly biased. Consequently, it is often beneficial to conduct at least one DT. A practical tool is provided to determine optimum number of DTs for different outcomes of a NDT survey and different failure consequences.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/DG16P02M050" target="_blank" >DG16P02M050: Optimisation of observations and assessment of heritage structures</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

Proceedings of the International Conference on Sustainable Materials, Systems and Structures (SMSS2019) Durability, Monitoring and Repair of Structures

ISBN

978-2-35158-217-6

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

684-691

Publisher name

Rilem Publications s.a.r.l.

Place of publication

Bagneux

Event location

Rovinj

Event date

Mar 20, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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