TY  - JOUR
TI  - MECHANICAL ACTIVATION OF FLY ASH: PHYSICAL, MINERALOGICAL AND MORPHOLOGICAL CHARACTERIZATION OF GROUND FLY ASHES
AB  - In this study, physical, mineralogical and morphological characteristics of mechanically treated fly ashes are investigated. Thecompositional analysis of the raw fly ash was determined using X-ray fluorescence (XRF) technique. The XRD patterns revealthat the main phase quartz along with mullite and anhydrite. The raw fly ash was also wet ground using a laboratory mill, forseveral different times (from 2 to 16 hours) in order to examine how the grinding increases the activity of the fly ash. Theground fly ash was characterized for (i) particle size distribution: laser diffraction method, (ii) specific surface area: BETmethod, (iii) crystalline structure: X-ray diffractometer, and (iv) morphology of particles: scanning electron microscope.According to physical characterization, fineness increasing of samples with grinding time was observed, but loss ofeffectiveness occurred for grinding time longer than 12 hours. In addition, the unmilled fly ash showed lower specific surfacearea, due to the presence of cenospheres in the original fly ash. Only a little change in crystalline structure of fly ashes wasobserved when grinding and there were changes in the area and height of each diffraction peak.
AU  - DİKMEN, Sedef
AU  - Fırat, Seyhan
AU  - dikmen, zafer
AU  - YILMAZ, Gülgün
DO  - 10.18038/estubtda.637927
PY  - 2019
JO  - Eskişehir Technical University Journal of Science and and Technology A- Applied Sciences and Engineering
VL  - 20
IS  - Özel Sayı
SN  - 2667-4211
SP  - 66
EP  - 76
DB  - TRDizin
UR  - http://search/yayin/detay/359327
ER  -