Akademik Veri Yönetim Sistemi
JOURNAL OF MATERIALS IN CIVIL ENGINEERING, cilt.29, sa.2, 2017 (SCI-Expanded)
Most hazardous, industrial waste from thermal coal-fired power plants has found utilization opportunities in different civil engineering applications by various treatment operations in recent years. Such initiatives provide improvements in economy, environmental protection, and health safety. One of the techniques used in treatment of powdered wastes is to make pellets by pelletization discs. These artificial pellets are mainly used in many structural applications as aggregate in concrete, filling material for roads and foundations, drainage and infiltration material, and so on. In this study, artificially produced pellets from mixtures of fly ash, bentonite, and powdered window glass were sintered at different temperatures to obtain desirable properties. Microstructure of these sintered pellets were investigated in order to understand the changes due to the sintering agent type, content, and sintering temperature. For this purpose, thermal, mineralogical, and microstructural studies were performed. It was noted that sintering temperature and the type and amount of the sintering agent had a remarkable effect on the changes in the microstructure of the pellets. X-ray diffraction (XRD) patterns also showed that sintering produced new crystalline phases not found in the raw materials which was also detected in differential thermal analysis (DTA). Thus, the dissimilar sintering behavior is attributed to the combined effect of crystal structure, morphological characteristics, and oxide compositions of the powder materials used in the production of the pellets.