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Residual compressive behavior of self-compacting concrete after high temperature exposure - influence of binder materials [Elektronski vir]Jelčić Rukavina, Marija ...This paper presents an experimental investigation of the compressive behavior of highstrength self-compacting concrete exposed to temperatures up to 600 C. Ten different concrete compositions were ... tested, in which part of the cement (by weight) was replaced by three different mineral additives (5–15% metakaolin, 20–40% fly ash and 5–15% limestone). The stress–strain curves, compressive strength, modulus of elasticity and strain at peak stress were evaluated from uniaxial compression tests. Scanning electron microscope micrographs were also taken to evaluate the damage caused by the high temperatures. A sharp decrease in mechanical properties and an increase in peak strain were observed already after 200 C for all mixes tested. The different mineral additives used in this study affected the variations of residual compressive strength by 24% and peak strain by 38%, while the variations of residual modulus elasticity were 14%. Comparing the obtained results with the recommendations for compressive strength given in regulatory code EN 1992-1-2 for high strength concrete, it can be concluded that the strength loss observed in EN 1992-1-2 at temperatures up to 400 C is too conservative. The Popovics model for the relationship between stress and strain provided a good approximation for the experimentally determined stress–strain curves at different temperatures.Source: Materials [Elektronski vir]. - ISSN 1996-1944 (Vol. 15, iss. 6, 2022, str. 1-24)Type of material - e-article ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 101518595
Author
Jelčić Rukavina, Marija |
Gabrijel, Ivan |
Netinger Grubeša, Ivanka |
Mladenovič, Ana
Topics
samorazlivni beton |
mineralni dodatki |
visoke temperature |
zaostale mehanske lastnosti |
self-compacting concrete |
mineral additives |
high temperatures |
residual mechanical properties |
open access
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Author | Jelčić Rukavina, Marija ... |
Title | Residual compressive behavior of self-compacting concrete after high temperature exposure - influence of binder materials [Elektronski vir] |
Publication date | 2022-03-17 |
COBISS.SI-ID | 101518595 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
---|---|---|---|
RAZVOJ NOVIH MATERIJALA I SUSTAVA ZAŠTITE BETONSKIH KONSTRUKCIJA | 082-0822161-2159 |
Ministry of Science, Education and Sports of the Republic of Croatia (MSES) |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Jelčić Rukavina, Marija | ![]() |
Gabrijel, Ivan | 16325 |
Netinger Grubeša, Ivanka | ![]() |
Mladenovič, Ana | 05930 |
Source: Personal bibliographies
and: SICRIS
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