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Original scientific paper
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

Fulltext: english, pdf (1 MB) pages 1746-1752 downloads: 313* cite
APA 6th Edition
Kramar, S. & 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 and 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, no. 6, 2018, pp. 1746-1752. https://doi.org/10.17559/TV-20171203193229. Accessed 17 Nov. 2019.
Chicago 17th Edition
Kramar, Sabina and Vilma Ducman. "Evaluation of Ash Pozzolanic Activity by Means of the Strength Activity Index Test, Frattini Test and DTA/TG Analysis." Tehnički vjesnik 25, no. 6 (2018): 1746-1752. https://doi.org/10.17559/TV-20171203193229
Harvard
Kramar, S., and 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), pp. 1746-1752. 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 [cited 2019 November 17];25(6):1746-1752. https://doi.org/10.17559/TV-20171203193229
IEEE
S. Kramar and 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, no. 6, pp. 1746-1752, 2018. [Online]. https://doi.org/10.17559/TV-20171203193229

Abstracts
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.

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

Hrčak ID: 212830

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

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