Effects of mechanical and thermal activation on pozzolanic activity of kaolin containing mica
Authorized Users Only
Article (Published version)
MetadataShow full item record
Kaolin from a Serbian deposit, characterized by high content of impurities, such as mica and quartz, disordered kaolinite and high specific surface area, was subjected to thermal and mechanical activation on a large scale. Activations were carried out with a goal to investigate the effects of applied methods on the chemical, structural and morphological changes that occurred in the kaolin, and their influence on the pozzolanic activity. The changes were monitored using XRD, FTIR, TG/DTA, PSD, BET and SEM analyses. Pozzolanic activity was evaluated by determination of the 7-day compressive strength conducted on the lime mortars. The results showed that mechanical activation by milling the kaolin for 20 h in the conventional horizontal ball mill was competitive for obtaining pozzolana as thermal activation. Pozzolanic activity of thermally activated kaolin was mainly influenced by formation of metakaolin. Combined effects (such as significant specific surface area increase, as well as... partial kaolinite and complete mica phase amorphization) were dominant in pozzolanic activity of mechanically activated kaolin.
Keywords:Thermal activation / Mechanical activation / Kaolin / Pozzolanic activity
Source:Applied Clay Science, 2016, 123, 173-181
- Utilization of by-products and recycled waste materials in concrete composites in the scope of sustainable construction development in Serbia: investigation and environmental assessment of possible applications (RS-36017)
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)
Showing items related by title, author, creator and subject.
Simultaneous enhancement of natural sunlight- and artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite Marković, Smilja; Stanković, Ana; Dostanić, Jasmina; Veselinović, Ljiljana; Mančić, Lidija; Škapin, Srečo Davor; Dražić, Goran; Janković Častvan, Ivona; Uskoković, Dragan (Royal Society of Chemistry, 2017)
Stochastic time response of adsorption-based micro/nanobiosensors with a fluidic reaction chamber: The influence of mass transfer Jokić, Ivana; Đurić, Zoran G.; Radulović, Katarina; Frantlović, Miloš (IEEE, 2017)
Enzymatic Synthesis of Aliphatic Esters of Phenolic Acids and Evaluation of Their Antioxidant Properties Knežević Jugović, Zorica; Jakovetić, Sonja; Jugović, Branimir; Gvozdenović, Milica M.; Grbavčić, Sanja; Bezbradica, Dejan; Antov, Mirjana (Tatranské Matliare : Slovak Society of Chemical Engineering, 2012)