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Thermal analysis and pozzolanic index of rice husk ash at different grinding time

Ramadhansyah , P. J and Mahyun , A. W and Salwa , M. Z. M and Abu Bakar , B. H and Megat Johari , M. A and Wan Ibrahim , Mohd Haziman (2012) Thermal analysis and pozzolanic index of rice husk ash at different grinding time. In: International Conference on Advances Science and Contemporary Engineering 2012 (ICASCE 2012), 24-25 Oktober 2012, Binus University, Jakarta.

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Abstract

Thermo-gravimetric and differential thermo-gravimetric analyses were performance to study the effect of temperature on the mineralogical compositions of rice husk ash subjected to different grinding time. Eight rice husk ashes with different grinding time, i.e. coarse original rice husk ash (RHA0), RHA1, RHA2, RHA3, RHA4, RHA5, RHA6, and RHA7 were used for the study. The TGA/ DTA analysis and X-ray fluorescence (XRF) was used through this investigation. On the other hand, the pozzolanic activity index of the RHA was assessed in accordance with ASTM C 311-11a. From the experiment, it was found that the greater the weight loss, the less the crystallinity of the RHA. In addition, there are no significant differences in chemical compositions of the rice husk ashes with different grinding time. Furthermore, when the grinding time increased from 1 hour and 30 minutes to 5 hours, there was a significant drop in the pozzolanic index.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: rice husk ash; grinding; thermal analysis; X-ray fluorescence; pozzolanic index
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD920-931 Rural and farm sanitary engineering
Divisions: Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 27 Feb 2013 01:33
Last Modified: 21 Jan 2015 08:18
URI: http://eprints.uthm.edu.my/id/eprint/3360
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