Microscopy Characterization of Silica-Rich Agrowastes to be used in Cement Binders: Bamboo and Sugarcane Leaves

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
Josefa RosellóJ Payá

Abstract

Agrowastes are produced worldwide in huge quantities and they contain interesting elements for producing inorganic cementing binders, especially silicon. Conversion of agrowastes into ash is an interesting way of yielding raw material used in the manufacture of low-CO2 binders. Silica-rich ashes are preferred for preparing inorganic binders. Sugarcane leaves (Saccharum officinarum, SL) and bamboo leaves (Bambusa vulgaris, BvL and Bambusa gigantea, BgL), and their corresponding ashes (SLA, BvLA, and BgLA), were chosen as case studies. These samples were analyzed by means of optical microscopy, Cryo-scanning electron microscopy (SEM), SEM, and field emission scanning electron microscopy. Spodograms were obtained for BvLA and BgLA, which have high proportions of silicon, but no spodogram was obtained for SLA because of the low silicon content. Different types of phytoliths (specific cells, reservoirs of silica in plants) in the studied leaves were observed. These phytoliths maintained their form after calcination at temperatures in the 350-850°C range. Owing to the chemical composition of these ashes, they are of interest for use in cements and concrete because of their possible pozzolanic reactivity. However, the presence of sign...Continue Reading

References

Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Emanuel Epstein
Oct 30, 2004·Annals of Botany·Lucrecia Gallego, Roberto A Distel
Jul 15, 2006·Trends in Plant Science·Jian Feng Ma, Naoki Yamaji
Jul 7, 2009·Trends in Biotechnology·Suresh NeethirajanLijun Wang
Jun 4, 2010·Journal of Environmental Monitoring : JEM·Jennifer S Le BlondClive Oppenheimer
Aug 11, 2012·Science·Christopher O TuckMartyn Poliakoff
Jun 12, 2014·Scientific Reports·Beilei LiGuomo Zhou

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Citations

Oct 17, 2018·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Josefa RosellóJordi Payá
Nov 18, 2018·Environmental Science and Pollution Research International·Durairaj KaliannanShim Jae-Jin

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