Open AccessInvestigation of the firing temperature effects on clay brick sample; Part-I: Mineralogical phase characterization
Author(s) -
Narendra Bahadur Bohara,
Lal Bahadur Bhat,
Dol Bahadur Ghale,
Nirjan Duwal,
Jagadeesh Bhattarai
Publication year - 2018
Publication title -
bibechana
Language(s) - English
Resource type - Journals
ISSN - 2382-5340
DOI - 10.3126/bibechana.v16i0.21319
Subject(s) - brick , mullite , hematite , mica , muscovite , mineralogy , quartz , materials science , clay minerals , spinel , mineral , corundum , fourier transform infrared spectroscopy , geology , composite material , metallurgy , chemical engineering , ceramic , engineering
Present research work was focused to investigate the firing temperature effects on mineralogical phase composition of nine clay bricks collected from the brick factory of Kathmandu valley using X-ray diffraction (XRD) patterns and Fourier transform infrared (FTIR) spectra analyses. Main mineralogical phases of quartz, feldspars, spinel, mullite and hematite in the brick specimens fired at different firing temperatures including muscovite type of mica mineral in the sun-dried brick specimen are identified from XRD and FTIR analyses. Disappearance of the muscovite type of mica clay mineral with feldspars enhanced to form alumina rich spinel phase at firing 900° to 1000° C, and finally the primary mullite phase in the fired clay brick samples is clearly observed at 1100° C firing temperature.BIBECHANA 16 (2019) 122-130