Durability of high volume fly ash binders
Samo za registrovane korisnike
2023
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Fly ash (FA), a by-product from thermal power plants, has been used for decades as Portland cement replacement material. Recently, additional efforts have been made by scientist and engineers worldwide with an aim to increase, as much as possible, content of FA in a binder, thus reduce negative environmental and economic impacts of the power and cement production. Furthermore, extensive work is being done on evaluating properties of the new binders, with a goal to ensure their wider use.
This work analyzes durability of the high volume FA binders (HVFA, ≥ 50 mass% of FA in a binder). In order to increase FA content and improve properties of the HVFA binders, FA was mechanically activated and a chemical activator was used for the binder synthesis. Freeze-thaw, carbonation and sulfate attack resistance of the binders were analyzed. It was found that the freeze-thaw resistance of the HVFA binder was in accordance with the standard requirements. Carbonation depth after 56 days of testing... of the HVFA binder was 7.3–8.1 mm, and an increase in the compressive strength of the mortar was observed. Studying of the sulfate attack on the HVFA binder showed that the resistance of the FA based binder was good, and even superior to the performance of the Portland composite cement CEM II 42.5N, tested under the same conditions and used for comparison. The obtained results indicated that the HVFA binders can be used for applications where moderate compressive strength and good durability of the binder is needed.
Ključne reči:
fly ash / durability / freeze-thaw resistance / carbonation / sulfate attack resistanceIzvor:
7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia, 2023, 68-69Izdavač:
- Institut za multidisciplinarna istraživanja
Finansiranje / projekti:
- Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-47/2023-01/200053 (Univerzitet u Beogradu, Institut za multidisciplinarna istraživanja))
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - CONF AU - Baščarević, Zvezdana AU - Rakić, Jelena PY - 2023 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2023 AB - Fly ash (FA), a by-product from thermal power plants, has been used for decades as Portland cement replacement material. Recently, additional efforts have been made by scientist and engineers worldwide with an aim to increase, as much as possible, content of FA in a binder, thus reduce negative environmental and economic impacts of the power and cement production. Furthermore, extensive work is being done on evaluating properties of the new binders, with a goal to ensure their wider use. This work analyzes durability of the high volume FA binders (HVFA, ≥ 50 mass% of FA in a binder). In order to increase FA content and improve properties of the HVFA binders, FA was mechanically activated and a chemical activator was used for the binder synthesis. Freeze-thaw, carbonation and sulfate attack resistance of the binders were analyzed. It was found that the freeze-thaw resistance of the HVFA binder was in accordance with the standard requirements. Carbonation depth after 56 days of testing of the HVFA binder was 7.3–8.1 mm, and an increase in the compressive strength of the mortar was observed. Studying of the sulfate attack on the HVFA binder showed that the resistance of the FA based binder was good, and even superior to the performance of the Portland composite cement CEM II 42.5N, tested under the same conditions and used for comparison. The obtained results indicated that the HVFA binders can be used for applications where moderate compressive strength and good durability of the binder is needed. PB - Institut za multidisciplinarna istraživanja C3 - 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia T1 - Durability of high volume fly ash binders EP - 69 SP - 68 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2023 ER -
@conference{ author = "Baščarević, Zvezdana and Rakić, Jelena", year = "2023", abstract = "Fly ash (FA), a by-product from thermal power plants, has been used for decades as Portland cement replacement material. Recently, additional efforts have been made by scientist and engineers worldwide with an aim to increase, as much as possible, content of FA in a binder, thus reduce negative environmental and economic impacts of the power and cement production. Furthermore, extensive work is being done on evaluating properties of the new binders, with a goal to ensure their wider use. This work analyzes durability of the high volume FA binders (HVFA, ≥ 50 mass% of FA in a binder). In order to increase FA content and improve properties of the HVFA binders, FA was mechanically activated and a chemical activator was used for the binder synthesis. Freeze-thaw, carbonation and sulfate attack resistance of the binders were analyzed. It was found that the freeze-thaw resistance of the HVFA binder was in accordance with the standard requirements. Carbonation depth after 56 days of testing of the HVFA binder was 7.3–8.1 mm, and an increase in the compressive strength of the mortar was observed. Studying of the sulfate attack on the HVFA binder showed that the resistance of the FA based binder was good, and even superior to the performance of the Portland composite cement CEM II 42.5N, tested under the same conditions and used for comparison. The obtained results indicated that the HVFA binders can be used for applications where moderate compressive strength and good durability of the binder is needed.", publisher = "Institut za multidisciplinarna istraživanja", journal = "7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia", title = "Durability of high volume fly ash binders", pages = "69-68", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2023" }
Baščarević, Z.,& Rakić, J.. (2023). Durability of high volume fly ash binders. in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia Institut za multidisciplinarna istraživanja., 68-69. https://hdl.handle.net/21.15107/rcub_rimsi_2023
Baščarević Z, Rakić J. Durability of high volume fly ash binders. in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia. 2023;:68-69. https://hdl.handle.net/21.15107/rcub_rimsi_2023 .
Baščarević, Zvezdana, Rakić, Jelena, "Durability of high volume fly ash binders" in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023, Belgrade, Serbia (2023):68-69, https://hdl.handle.net/21.15107/rcub_rimsi_2023 .