Effect of Particle Size Distribution on the Sintering Behaviour of Fly Ash, Red Mud and Fly Ash-Red Mud Mixture

  • Sedef Dikmen
  • Zafer Dikmen
  • Gülgün Yılmaz
  • Seyhan Fırat
Conference paper
First Online:
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 7)

Abstract

In this study, the characterization and microstructure observation of the sintering behaviour of F (from Seyitömer Thermal Power Plant) and C (from Soma Thermal Power Plant) types fly ashes, red mud and red mud–fly ash mixtures at 4 and 8 h milling times with a mortar type ball are investigated. The particle size distribution (PSD) was carried out by laser technique. The PSD analysis revealed that the particle size decreased with increasing milling time. After milling, the samples were pressed into a cylindrical form without using any additive or binder. The formed samples were sintered at 1050 °C. Phase evolutions and microstructures of the formed samples were carried out by using X-ray diffraction method (XRD) and scanning electron microscope (SEM) method, respectively. The water absorption and compressive strength were tested to determine some physico-mechanical properties. The results of mineralogical analysis as well as the microstructural observations reveal that phase transformations occurred during the sintering treatments. The results showed that at the chosen optimum conditions (F type fly ash-red mud mixture with 1:1 ratio, sintering temperature of 1050 °C and milling time of 4 h), the best characteristics of sintered glass ceramic could be obtained. Values obtained from mechanical testing showed that the fly ash–red mud sintered ceramic materials had increased strength compared to other sintered ceramic materials. The sintered materials from red mud have the highest water absorption value.

Keywords

Fly ash Red mud Sintering behaviour Microstructure Mechanical properties 
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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Sedef Dikmen
    • 1
  • Zafer Dikmen
    • 1
  • Gülgün Yılmaz
    • 2
  • Seyhan Fırat
    • 3
  1. 1.Physics Department, Science FacultyAnadolu UniversityEskişehirTurkey
  2. 2.Porsuk Vocational SchoolAnadolu UniversityEskişehirTurkey
  3. 3.Department of Civil Engineering, Faculty of TechnologyGazi UniversityAnkaraTurkey

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