| Literature DB >> 33925777 |
Nur Nadiah Izzati Zulkifli1,2, Mohd Mustafa Al Bakri Abdullah1,2, Anna Przybył3, Paweł Pietrusiewicz3, Mohd Arif Anuar Mohd Salleh1,2, Ikmal Hakem Aziz1,2, Dariusz Kwiatkowski4, Marcin Gacek3, Marek Gucwa4, Jitrin Chaiprapa5.
Abstract
This paper clarified the microstructural element distribution and electrical conductivity changes of kaolin, fly ash, and slag geopolymer at 900 °C. The surface microstructure analysis showed the development in surface densification within the geopolymer when in contact with sintering temperature. It was found that the electrical conductivity was majorly influenced by the existence of the crystalline phase within the geopolymer sample. The highest electrical conductivity (8.3 × 10-4 Ωm-1) was delivered by slag geopolymer due to the crystalline mineral of gehlenite (3Ca2Al2SiO7). Using synchrotron radiation X-ray fluorescence, the high concentration Ca boundaries revealed the appearance of gehlenite crystallisation, which was believed to contribute to development of denser microstructure and electrical conductivity.Entities:
Keywords: electrical conductivity; geopolymer; microstructure analysis; phase analysis; sintering temperature
Year: 2021 PMID: 33925777 DOI: 10.3390/ma14092213
Source DB: PubMed Journal: Materials (Basel) ISSN: 1996-1944 Impact factor: 3.623