20.500.12556/DiRROS-17495 Evaluation of ash pozzolanic activity by means of the strength activity index test, frattini test and DTA/TG analysis 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. biomass ash DTA/TG fly ash Frattini test pozzolanic activity SAI lesni pepel DTA/TG elektrofiltrski pepel Frattinijev test pucolanska aktivnost SAI true false true Strojarski fakultet, Elektrotehnički fakultet, Građevinski fakultet Angleški jezik Slovenski jezik © Tehnički vjesnik, 2018 Neznano 2023-12-11 09:36:46 2023-12-11 09:36:46 2023-12-12 03:38:37 0000-00-00 00:00:00 2018 0 0 str. 1746-1752 no. 6 Vol. 25 Dec. 2018 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2018-12-16 620.1/.2 1848-6339 10.17559/TV-20171203193229 2416487 https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=311137 1 097ccb81-97f8-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23761 RAZ_Dolenec_Sabina_2018.pdf RAZ_Dolenec_Sabina_2018.pdf 1 3D5DD0CE40504EB4AE0BFEF594D004CC 51b5eaa62335459a97d7d56962bfb2dcdabcb31a44fd1d53f74a44f6677058a6 029d9544-97f9-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23762 Zavod za gradbeništvo Slovenije 0 0 0