Mechanical and basic physical properties of high-strength concrete exposed to elevated temperatures
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322445" target="_blank" >RIV/68407700:21110/18:00322445 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.760.108" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.760.108</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.760.108" target="_blank" >10.4028/www.scientific.net/KEM.760.108</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Mechanical and basic physical properties of high-strength concrete exposed to elevated temperatures
Popis výsledku v původním jazyce
In this paper, the effect of elevated temperatures on the mechanical and basic properties of two different newly-designed high-strength concretes is studied. The studied materials were prepared from Portland cement, steel fibers, reactive finely milled quartz powder and quartz sand, silica fume, plasticizer, and with a relatively low water/cement ratio of 0.24. The samples were stored in water environment for the first 28 days of hydration to achieve better mechanical properties. Then, after pre-drying at 105 °C to constant mass, the materials were exposed to elevated temperatures of 600 °C and 1000 °C where they were kept for 2 hours. The basic physical properties, such as matrix density, bulk density and open porosity were determined as a function of temperature. Mechanical properties (compressive and flexural strength) were also studied. The measured parameters exhibited a high dependence on temperature and the obtained results pointed to the structural changes of the studied materials. Spalling was not observed because of the pre-drying treatment.
Název v anglickém jazyce
Mechanical and basic physical properties of high-strength concrete exposed to elevated temperatures
Popis výsledku anglicky
In this paper, the effect of elevated temperatures on the mechanical and basic properties of two different newly-designed high-strength concretes is studied. The studied materials were prepared from Portland cement, steel fibers, reactive finely milled quartz powder and quartz sand, silica fume, plasticizer, and with a relatively low water/cement ratio of 0.24. The samples were stored in water environment for the first 28 days of hydration to achieve better mechanical properties. Then, after pre-drying at 105 °C to constant mass, the materials were exposed to elevated temperatures of 600 °C and 1000 °C where they were kept for 2 hours. The basic physical properties, such as matrix density, bulk density and open porosity were determined as a function of temperature. Mechanical properties (compressive and flexural strength) were also studied. The measured parameters exhibited a high dependence on temperature and the obtained results pointed to the structural changes of the studied materials. Spalling was not observed because of the pre-drying treatment.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/7AMB16PL044" target="_blank" >7AMB16PL044: Efektivní tepelná úprava kalů z čistíren odpadních vod a jejich aplikace ve směsném cementovém pojivu</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Special Concrete and Composites 2017
ISBN
978-3-0357-1240-7
ISSN
1013-9826
e-ISSN
1662-9795
Počet stran výsledku
6
Strana od-do
108-113
Název nakladatele
Transtech Publications
Místo vydání
Zürich
Místo konání akce
Skalský Dvůr
Datum konání akce
10. 10. 2017
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—