A pilot study of methods for measuring the residual properties of concrete exposed to elevated temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F18%3APU128194" target="_blank" >RIV/00216305:26110/18:PU128194 - isvavai.cz</a>

Result on the web

<a href="http://mit.imt.si/Revija/izvodi/mit183/rozsypalova.pdf" target="_blank" >http://mit.imt.si/Revija/izvodi/mit183/rozsypalova.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2017.004" target="_blank" >10.17222/mit.2017.004</a>

Result language

angličtina

Original language name

A pilot study of methods for measuring the residual properties of concrete exposed to elevated temperatures

Original language description

This pilot study and literature review was performed with the purpose of preparing for subsequent extensive research focused on the design of effective diagnostic methods for determining the current state of concrete structures damaged by high temperatures during exposure to fire. During the pilot study, specimens were prepared from ordinary concrete with dense aggregate, and were subsequently loaded by temperatures of 200, 400, 600, 800, 1000 and 1200 °C. One set of the specimens was kept as reference specimens without thermal loading. After the thermal loading of the six sets of specimens had cooled, selected non-destructive tests were performed; namely the SilverSchmidt hammer rebound test, the ultrasonic pulse velocity test, and the impact-echo method. Furthermore, the compressive strength of the specimens was determined destructively to provide reference data. The experiments indicated the fact that the commonly used non-destructive methods are not suitable for estimating the compressive strength of concrete exposed to temperatures higher than 600 °C. This indicates that it is necessary to derive new calibration relationships for such conditions. It was also found that an apparent increase occurred in the hardness and modulus of elasticity of the tested concrete when it was exposed to temperatures greater than 1000 °C.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA16-18702S" target="_blank" >GA16-18702S: AMIRI − Aggregate-Matrix-Interface Related Issues in silicate-based composites</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Materiali in tehnologije

ISSN

1580-2949

e-ISSN

1580-3414

Volume of the periodical

52

Issue of the periodical within the volume

3

Country of publishing house

SI - SLOVENIA

Number of pages

10

Pages from-to

243-252

UT code for WoS article

000435102200001

EID of the result in the Scopus database

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