Publication: Synthesis of belite cement from nano-silica extracted from two rice husk ashes
2
Issued Date
2017-04-01
Resource Type
ISSN
10958630
03014797
03014797
Other identifier(s)
2-s2.0-85007361722
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Environmental Management. Vol.190, (2017), 53-60
Suggested Citation
Suthatip Sinyoung, Kittipong Kunchariyakun, Suwimol Asavapisit, Kenneth J.D. MacKenzie Synthesis of belite cement from nano-silica extracted from two rice husk ashes. Journal of Environmental Management. Vol.190, (2017), 53-60. doi:10.1016/j.jenvman.2016.12.016 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/42670
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Synthesis of belite cement from nano-silica extracted from two rice husk ashes
Abstract
© 2016 Elsevier Ltd Nano-silicas extracted from a pure rice husk ash calcined in the laboratory (RHA) and ash from an impure industrial rice husk waste (BRHA), were used to form belite cement by firing with two different calcium sources (calcium carbonate and calcium nitrate). The nano-silica extracted from RHA was highly reactive due to its high pore volume and low activation energy of dehydration. The formation of belite cement from both nano-silicas was studied by firing with two different calcium sources, Ca(NO3)2and CaCO3at 800–1100 °C. Both nano-silicas formed the principal phase in belite cement (larnite or β-C2S) at temperatures as low as 800 °C, especially with calcium nitrate as the calcium source. Thus, highly impure BRHA is shown to be very suitable as a starting material for the low-temperature production of belite cement, especially in conjunction with calcium nitrate as the calcium source.