Assessment of Concrete Strength According to EN 13791:2019

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F21%3A00353887" target="_blank" >RIV/68407700:21610/21:00353887 - 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

Assessment of Concrete Strength According to EN 13791:2019

Original language description

New European standard EN 13791:2019 provides a procedure for estimating characteristic value of in-situ concrete compressive strength using cores. The new provisions, which follow from the 2007 issue of the standard, are an attempt to align EN 13791 with the general principles of EN 1990. The submitted contribution reviews the testing of outlying observations and compares the estimation in accordance with EN 13791:2019 and EN 1990. The presented numerical studies demonstrate that outliers may significantly affect the estimate of a characteristic value of concrete strength. EN 13791 newly provides two relationships for estimate of the characteristic value that significantly differ from each other. The approach based on the minimum observation in the sample is not statistically justified and often becomes redundant as it does not normally affect the resulting estimate when outliers are eliminated from the sample. The dominating relationship is consistent with the EN 1990 approach for “unknown coefficient of variation”. EN 1990 additionally considers a procedure with “known coefficient of variation”, which may be important particularly for the cases of low sample sizes. The use of prior information through the procedure with “known coefficient of variation” or Bayesian updating is briefly discussed, focusing on difficulties in practical applications. The study concludes with the recommendation to harmonize the procedures of EN 13791 with those provided in EN 1990.

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

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/GA20-01781S" target="_blank" >GA20-01781S: Uncertainty modelling in safety formats of concrete structures</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Article name in the collection

Concrete Structures: New Trends for Eco-Efficiency and Performance

ISBN

978-2-940643-08-0

ISSN

2617-4820

e-ISSN

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Number of pages

8

Pages from-to

2027-2034

Publisher name

Fédération Internationale du Béton

Place of publication

Lausanne

Event location

online from Lisbon

Event date

Jun 14, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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