Effect of Modifying Additives on Mechanical Properties of Refractory Concrete
<span lang="EN-GB">This experimental study presents the results of the combined effect of micro fibre and micro silica content on physical and mechanical properties of refractory concrete after exposure to high temperatures. A complex binder together with firestone aggregates was use...
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Kaunas University of Technology
2012-09-01
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doaj-ddb1f23e89bc4ce6971564ff69b0b77d2020-11-25T01:50:34ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892012-09-0118329029510.5755/j01.ms.18.3.24421516Effect of Modifying Additives on Mechanical Properties of Refractory ConcreteRegina KALPOKAITE-DICKUVIENE0Kristina BRINKIENE1Algis MAKSTYS2Jurate CESNIENE3Violeta MATULIONIENE4Lithuanian Energy InstituteLithuanian Energy InstituteLithuanian Energy InstituteLithuanian Energy InstituteLithuanian Energy Institute<span lang="EN-GB">This experimental study presents the results of the combined effect of micro fibre and micro silica content on physical and mechanical properties of refractory concrete after exposure to high temperatures. A complex binder together with firestone aggregates was used for production of refractory concrete, which was reinforced simultaneously with micro fibre (1 wt % and 3 wt %) and micro silica (1.5 wt<sub> </sub>%, 3.5 wt<sub> </sub>% and 5 wt<sub> </sub>%). Unmodified concrete was produced as well. The results show that simultaneous modification with micro silica and micro fibre improves the flexural strength of the refractory concrete at all the temperatures investigated: 100<sub> </sub>°C, 600<sub> </sub>°C, 800<sub> </sub>°C and 1000<sub> </sub>°C. Contrary, the advantage of reinforcing agents on cold crushing strength of concrete was observed above 800<sub> </sub>°C. It was determined that the mechanical strength of the refractory concrete increases with the increasing content of micro silica and reduces with the increasing content of micro fibre.</span><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.18.3.2442">http://dx.doi.org/10.5755/j01.ms.18.3.2442</a></p>http://matsc.ktu.lt/index.php/MatSc/article/view/2442fibresilicarefractoryconcretecementcompressive strengthflexural strengthhigh temperature |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Regina KALPOKAITE-DICKUVIENE Kristina BRINKIENE Algis MAKSTYS Jurate CESNIENE Violeta MATULIONIENE |
spellingShingle |
Regina KALPOKAITE-DICKUVIENE Kristina BRINKIENE Algis MAKSTYS Jurate CESNIENE Violeta MATULIONIENE Effect of Modifying Additives on Mechanical Properties of Refractory Concrete Medžiagotyra fibre silica refractory concrete cement compressive strength flexural strength high temperature |
author_facet |
Regina KALPOKAITE-DICKUVIENE Kristina BRINKIENE Algis MAKSTYS Jurate CESNIENE Violeta MATULIONIENE |
author_sort |
Regina KALPOKAITE-DICKUVIENE |
title |
Effect of Modifying Additives on Mechanical Properties of Refractory Concrete |
title_short |
Effect of Modifying Additives on Mechanical Properties of Refractory Concrete |
title_full |
Effect of Modifying Additives on Mechanical Properties of Refractory Concrete |
title_fullStr |
Effect of Modifying Additives on Mechanical Properties of Refractory Concrete |
title_full_unstemmed |
Effect of Modifying Additives on Mechanical Properties of Refractory Concrete |
title_sort |
effect of modifying additives on mechanical properties of refractory concrete |
publisher |
Kaunas University of Technology |
series |
Medžiagotyra |
issn |
1392-1320 2029-7289 |
publishDate |
2012-09-01 |
description |
<span lang="EN-GB">This experimental study presents the results of the combined effect of micro fibre and micro silica content on physical and mechanical properties of refractory concrete after exposure to high temperatures. A complex binder together with firestone aggregates was used for production of refractory concrete, which was reinforced simultaneously with micro fibre (1 wt % and 3 wt %) and micro silica (1.5 wt<sub> </sub>%, 3.5 wt<sub> </sub>% and 5 wt<sub> </sub>%). Unmodified concrete was produced as well. The results show that simultaneous modification with micro silica and micro fibre improves the flexural strength of the refractory concrete at all the temperatures investigated: 100<sub> </sub>°C, 600<sub> </sub>°C, 800<sub> </sub>°C and 1000<sub> </sub>°C. Contrary, the advantage of reinforcing agents on cold crushing strength of concrete was observed above 800<sub> </sub>°C. It was determined that the mechanical strength of the refractory concrete increases with the increasing content of micro silica and reduces with the increasing content of micro fibre.</span><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.18.3.2442">http://dx.doi.org/10.5755/j01.ms.18.3.2442</a></p> |
topic |
fibre silica refractory concrete cement compressive strength flexural strength high temperature |
url |
http://matsc.ktu.lt/index.php/MatSc/article/view/2442 |
work_keys_str_mv |
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1725001217544814592 |