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Tehnički vjesnik, Vol. 25 No. 6, 2018.

Izvorni znanstveni članak
https://doi.org/10.17559/TV-20171203193229

Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis

Sabina Kramar ; Slovenian National Building and Civil Engineering Institute, Dimičeva Ulica 12, 1000, Ljubljana, Slovenia
Vilma Ducman ; Slovenian National Building and Civil Engineering Institute, Dimičeva Ulica 12, 1000, Ljubljana, Slovenia

Puni tekst: engleski, pdf (1 MB) str. 1746-1752 preuzimanja: 22* citiraj
APA 6th Edition
Kramar, S. i Ducman, V. (2018). Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis. Tehnički vjesnik, 25 (6), 1746-1752. https://doi.org/10.17559/TV-20171203193229
MLA 8th Edition
Kramar, Sabina i Vilma Ducman. "Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis." Tehnički vjesnik, vol. 25, br. 6, 2018, str. 1746-1752. https://doi.org/10.17559/TV-20171203193229. Citirano 22.01.2019.
Chicago 17th Edition
Kramar, Sabina i Vilma Ducman. "Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis." Tehnički vjesnik 25, br. 6 (2018): 1746-1752. https://doi.org/10.17559/TV-20171203193229
Harvard
Kramar, S., i Ducman, V. (2018). 'Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis', Tehnički vjesnik, 25(6), str. 1746-1752. doi: https://doi.org/10.17559/TV-20171203193229
Vancouver
Kramar S, Ducman V. Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis. Tehnički vjesnik [Internet]. 2018 [pristupljeno 22.01.2019.];25(6):1746-1752. doi: https://doi.org/10.17559/TV-20171203193229
IEEE
S. Kramar i V. Ducman, "Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis", Tehnički vjesnik, vol.25, br. 6, str. 1746-1752, 2018. [Online]. doi: https://doi.org/10.17559/TV-20171203193229

Sažetak
The pozzolanic activity of five different types of ash was studied using various direct and indirect methods. In addition to strength activity index (SAI) determination and the Frattini test, ash pozzolanicity was assessed via differential thermal and thermogravimetric analyses (DTA/TG) after curing for 7, 28 and 90 days. The results showed that, due to their respective mineralogical, chemical and physical characteristics, the ashes exhibited different levels of pozzolanic activity in terms of the amount of lime with which they could chemically bind, as well as reaction kinetics. Although SAI and Frattini test results were not in agreement in the case of some of the ashes, DTA/TG analysis revealed that a certain amount of portlandite was consumed, thus confirming the occurrence of a pozzolanic reaction. The results also showed that ashes with higher amounts of reactive SiO2 were more reactive, while those with higher BET surface areas displayed a faster pozzolanic reaction rate.

Ključne riječi
biomass ash, DTA/TG, fly ash, Frattini test, pozzolanic activity, SAI

Hrčak ID: 212830

URI
https://hrcak.srce.hr/212830

Posjeta: 42 *