Pregled bibliografske jedinice broj: 1024062
Carbonation induced changes in durability properties of blended cement mortars
Carbonation induced changes in durability properties of blended cement mortars // Proceedings of the 4th International Conference on Service Life Design for Infrastructures (SLD4) / Ye, G. ; Yuan, Y. ; Romero Rodriguez, C. ; Zhang, H. ; Šavija, B. (ur.).
Delft: RILEM Publications SARL, 2018. str. 59-67 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 1024062 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Carbonation induced changes in durability properties of blended cement mortars
Autori
Serdar, Marijana ; Husnjak, Dominik ; Matić, David ; Šajna, Aljoša
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the 4th International Conference on Service Life Design for Infrastructures (SLD4)
/ Ye, G. ; Yuan, Y. ; Romero Rodriguez, C. ; Zhang, H. ; Šavija, B. - Delft : RILEM Publications SARL, 2018, 59-67
ISBN
978-2-35158-213-8
Skup
4th International Conference on Service Life Design for Infrastructures (SLD4)
Mjesto i datum
Delft, Nizozemska, 27.08.2018. - 30.08.2018
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
carbonation, chloride migration, capillary absorption, thermogravimetric analysis, phenolphthalein spray test
Sažetak
During carbonation of concrete, CO2 from the atmosphere is dissolving in water and forming carbonic acid that reacts with different calcium bearing phases inside cementitious matrix, mainly CH and C-S-H. This reaction leads to the changes in mineralogical composition of the matrix, causing changes in durability properties of concrete. In this study, carbonation induced changes in durability properties were evaluated for mortars with three different binder compositions: i) ordinary Portland cement, ii) blended cement with slag, iii) blended cement with high volume of fly ash and silica fume. Compressive strength, chloride migration and capillary absorption of different concrete types were tested after exposure to 4% CO2 lasting for 2, 4 and 8 weeks. Changes in mechanical and durability properties were compared to samples that were not exposed to CO2 and were connected to changes in porosity and mineralogical composition of mortars. Results indicate that the changes in durability properties differ depending on the composition of the binder, which could have an important effect on the service life modelling of structures with blended cements.
Izvorni jezik
Engleski
Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti
