Pregled bibliografske jedinice broj: 1221859
Impact of slag on carbonation rate of concrete based on calcium aluminate cement
Impact of slag on carbonation rate of concrete based on calcium aluminate cement // MATEC Web of Conferences Volume 364 / Alexander, M.G. ; Beushausen, H. ; Dehn, F. ; Ndawula, J. ; Moyo, P. (ur.).
Cape Town, 2022. 02020, 4 doi:10.1051/matecconf/202236402020 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Impact of slag on carbonation rate of concrete based
on calcium aluminate cement
Autori
Bašić, Alma-Dina ; Serdar, Marijana ; Mikanovic, Ingrid ; Walenta, Gunther
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
MATEC Web of Conferences Volume 364
/ Alexander, M.G. ; Beushausen, H. ; Dehn, F. ; Ndawula, J. ; Moyo, P. - Cape Town, 2022
Skup
6th International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2022)
Mjesto i datum
Cape Town, Južnoafrička Republika, 03.10.2022. - 05.10.2022
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Concrete Durability Aspects - Service Life Modelling and Prediction of Durability
Sažetak
Throughout their service life, concrete structures are exposed to various environmental conditions that affect their durability. The cementitious matrix inevitably comes into contact with air, which leads to a progressive carbonation reaction. As a result of carbonation, changes occur in the microstructure and porosity of the cementitious matrix. Calcium aluminate cement is produced to increase the resistance of composites to aggressive environments, but its application is limited by the occurrence of conversion process. The addition of slag inhibits the conversion process of calcium aluminate cement and prevents a reduction in compressive strength due to the formation of C2ASH8 hydrate, while contributing to the net zero commitment of the cement industry. It remains an open question how these changes in microstructure caused by the addition of slag affect the carbonation rate of calcium aluminate cement-based concrete. Therefore, the objective of this study was to determine the effects of slag on the microstructure and porosity of calcium aluminate-based concrete before and after accelerated carbonation. For this purpose, the mechanical properties, porosity, and reaction product of a concrete mix containing 30% calcium aluminate cement replacement by slag were compared to calcium aluminate cement-based concrete before and after exposure to 3% CO2 for 7 and 28 days. Thermogravimetric analysis (TGA) and mercury intrusion porosimetry (MIP) were tested to understand the changes in reaction products and pore size distribution, respectively.
Izvorni jezik
Engleski
Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti
POVEZANOST RADA
Projekti:
MINGO-ESIF-KK.01.2.1.02.004 - Razvoj novog inovativnog ECO₂Flex proizvoda (ECO₂Flex) (Serdar, Marijana, MINGO - Povećanje razvoja novih proizvoda i usluga koji proizlaze iz aktivnosti istraživanja i razvoja - faza II) ( CroRIS)
--UIP-2017-05-4767 - Alternativna veziva za beton: razumijevanje mikrostrukture za predviđanje trajnosti (ABC) (Serdar, Marijana) ( CroRIS)
Ustanove:
Građevinski fakultet, Zagreb
