Destructive and non-destructive experimental investigation of polypropylene fibre reinforced concrete subjected to high temperature
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332291" target="_blank" >RIV/68407700:21110/19:00332291 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.jobe.2019.100906" target="_blank" >https://doi.org/10.1016/j.jobe.2019.100906</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jobe.2019.100906" target="_blank" >10.1016/j.jobe.2019.100906</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Destructive and non-destructive experimental investigation of polypropylene fibre reinforced concrete subjected to high temperature
Popis výsledku v původním jazyce
Long-term exposure to high temperature results in the change in both strength properties and mechanical behaviour of concrete. The aim of this paper was to focus on the performance of selected concrete composites, particularly plain concrete and fibre reinforced concrete with polypropylene fibres, exactly at the elevated-temperature state. Namely it concerns reference plain concrete and polypropylene fibre reinforced concrete tested up to 800° C. Standard destructive tests and non-destructive tests were conducted on cylindrical specimens at hot state immediately after heating-up by using a specific heat treatment. The main objective of the experimental study was to observe actual material strength during fire situation as well as the reliability of the Schmidt´s rebound hammer test when used for testing concrete at elevated temperature. The obtained results are in good agreement with the existing result database of polypropylene fibre reinforced concrete and plain concrete subjected to elevated temperature. The results obtained by the two different testing methods also show good agreement in a certain range of temperatures. As a consequence, it seems that conducting the Schmidt´s rebound hammer test on hot specimen with subsequent standard destructive compression test on the identical specimens cooled down to ambient temperature enable the observation of the compressive strength at hot state and the residual compressive strength after fire exposure on the same specimen. The investigation also demonstrates the benefit of the polypropylene fibres when added to a concrete composite subjected to elevated temperatures. Their presence in a mixture improves concrete spalling resistance and ensures a stable environment with low pore pressure in the concrete microstructure when subjected to elevated temperature and as a consequence the deviation in concrete compressive strength is small.
Název v anglickém jazyce
Destructive and non-destructive experimental investigation of polypropylene fibre reinforced concrete subjected to high temperature
Popis výsledku anglicky
Long-term exposure to high temperature results in the change in both strength properties and mechanical behaviour of concrete. The aim of this paper was to focus on the performance of selected concrete composites, particularly plain concrete and fibre reinforced concrete with polypropylene fibres, exactly at the elevated-temperature state. Namely it concerns reference plain concrete and polypropylene fibre reinforced concrete tested up to 800° C. Standard destructive tests and non-destructive tests were conducted on cylindrical specimens at hot state immediately after heating-up by using a specific heat treatment. The main objective of the experimental study was to observe actual material strength during fire situation as well as the reliability of the Schmidt´s rebound hammer test when used for testing concrete at elevated temperature. The obtained results are in good agreement with the existing result database of polypropylene fibre reinforced concrete and plain concrete subjected to elevated temperature. The results obtained by the two different testing methods also show good agreement in a certain range of temperatures. As a consequence, it seems that conducting the Schmidt´s rebound hammer test on hot specimen with subsequent standard destructive compression test on the identical specimens cooled down to ambient temperature enable the observation of the compressive strength at hot state and the residual compressive strength after fire exposure on the same specimen. The investigation also demonstrates the benefit of the polypropylene fibres when added to a concrete composite subjected to elevated temperatures. Their presence in a mixture improves concrete spalling resistance and ensures a stable environment with low pore pressure in the concrete microstructure when subjected to elevated temperature and as a consequence the deviation in concrete compressive strength is small.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GA17-23067S" target="_blank" >GA17-23067S: Charakterizace chování betonu vystaveného výbuchu a následnému požáru</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Building Engineering
ISSN
2352-7102
e-ISSN
2352-7102
Svazek periodika
26
Číslo periodika v rámci svazku
100906
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
9
Strana od-do
—
Kód UT WoS článku
000502363100027
EID výsledku v databázi Scopus
2-s2.0-85071465181