Effects of selected inorganic chemical activators on properties and hydration mechanism of high volume fly ash (HVFA) binders
Samo za registrovane korisnike
2023
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Effects of Na2SO4, Na2CO3, and Na2SiO3 on setting time, compressive strength (up to 90 days), and hydration mechanism of binders with high volume (70 wt%, HVFA binders) of fly ash (FA) were investigated. Before chemical activation, FA was mechanically activated. Effects of the activators on hydration process were examined by isothermal calorimetry, X-ray diffraction and thermogravimetric analyses, and scanning electron microscopy. Pore solution analyses were also performed. It was found that, with addition of the chemical activators, Portland cement (PC) hydration was accelerated and the pozzolanic reaction started earlier, which resulted in shortening of setting time and increase in early compressive strength of the HVFA binders. Combination of mechanical activation of FA and the chemical activation by sodium silicate proved to be the best choice for synthesis of HVFA binder with good physicomechanical properties.
Ključne reči:
Chemical activation / Compressive strength / Fly ash / Hydration / Mechanical activation / Pozzolanic reactionIzvor:
Construction and Building Materials, 2023, 391, 131833-Izdavač:
- Elsevier Ltd.
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200053 (Univerzitet u Beogradu, Institut za multidisciplinarna istraživanja) (RS-MESTD-inst-2020-200053)
- Funding of the EUREKA project E!9980 INBYCON is also gratefully acknowledged.
DOI: 10.1016/j.conbuildmat.2023.131833
ISSN: 0950-0618
Scopus: 2-s2.0-85160002785
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Rakić, Jelena M. AU - Petrović, Rada D. AU - Radojević, Vesna J. AU - Baščarević, Zvezdana D. PY - 2023 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6458 AB - Effects of Na2SO4, Na2CO3, and Na2SiO3 on setting time, compressive strength (up to 90 days), and hydration mechanism of binders with high volume (70 wt%, HVFA binders) of fly ash (FA) were investigated. Before chemical activation, FA was mechanically activated. Effects of the activators on hydration process were examined by isothermal calorimetry, X-ray diffraction and thermogravimetric analyses, and scanning electron microscopy. Pore solution analyses were also performed. It was found that, with addition of the chemical activators, Portland cement (PC) hydration was accelerated and the pozzolanic reaction started earlier, which resulted in shortening of setting time and increase in early compressive strength of the HVFA binders. Combination of mechanical activation of FA and the chemical activation by sodium silicate proved to be the best choice for synthesis of HVFA binder with good physicomechanical properties. PB - Elsevier Ltd. T2 - Construction and Building Materials T1 - Effects of selected inorganic chemical activators on properties and hydration mechanism of high volume fly ash (HVFA) binders SP - 131833 VL - 391 DO - 10.1016/j.conbuildmat.2023.131833 ER -
@article{ author = "Rakić, Jelena M. and Petrović, Rada D. and Radojević, Vesna J. and Baščarević, Zvezdana D.", year = "2023", abstract = "Effects of Na2SO4, Na2CO3, and Na2SiO3 on setting time, compressive strength (up to 90 days), and hydration mechanism of binders with high volume (70 wt%, HVFA binders) of fly ash (FA) were investigated. Before chemical activation, FA was mechanically activated. Effects of the activators on hydration process were examined by isothermal calorimetry, X-ray diffraction and thermogravimetric analyses, and scanning electron microscopy. Pore solution analyses were also performed. It was found that, with addition of the chemical activators, Portland cement (PC) hydration was accelerated and the pozzolanic reaction started earlier, which resulted in shortening of setting time and increase in early compressive strength of the HVFA binders. Combination of mechanical activation of FA and the chemical activation by sodium silicate proved to be the best choice for synthesis of HVFA binder with good physicomechanical properties.", publisher = "Elsevier Ltd.", journal = "Construction and Building Materials", title = "Effects of selected inorganic chemical activators on properties and hydration mechanism of high volume fly ash (HVFA) binders", pages = "131833", volume = "391", doi = "10.1016/j.conbuildmat.2023.131833" }
Rakić, J. M., Petrović, R. D., Radojević, V. J.,& Baščarević, Z. D.. (2023). Effects of selected inorganic chemical activators on properties and hydration mechanism of high volume fly ash (HVFA) binders. in Construction and Building Materials Elsevier Ltd.., 391, 131833. https://doi.org/10.1016/j.conbuildmat.2023.131833
Rakić JM, Petrović RD, Radojević VJ, Baščarević ZD. Effects of selected inorganic chemical activators on properties and hydration mechanism of high volume fly ash (HVFA) binders. in Construction and Building Materials. 2023;391:131833. doi:10.1016/j.conbuildmat.2023.131833 .
Rakić, Jelena M., Petrović, Rada D., Radojević, Vesna J., Baščarević, Zvezdana D., "Effects of selected inorganic chemical activators on properties and hydration mechanism of high volume fly ash (HVFA) binders" in Construction and Building Materials, 391 (2023):131833, https://doi.org/10.1016/j.conbuildmat.2023.131833 . .