TITLE:
X-Ray Diffraction Studies of Rice Husk Ash—An Ecofriendly Concrete at Different Temperatures
AUTHORS:
Patnaikuni Chandan Kumar, Nutulapati V. S. Venugopal
KEYWORDS:
Rice Husk Ash Concrete; X-Ray Diffraction Studies; Different Temperature Environment
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.4 No.8,
August
2,
2013
ABSTRACT: In the majority of rice producing countries, much of
the husk produced from the processing of rice is either burnt or dumped as
waste. Rice husks are one of the largest readily available but most
under-utilized biomass resources, being an ideal fuel for electricity
generation. In this communication the author reported the X-ray diffraction
studies on rice husk ash (RHA) concrete samples heated at 300℃ and
1000℃ which were compared and observed that at 300℃ the inner surface of the
specimen shows an extra compound. Copper Iron Lead Telluride Cu3FePbTe4 along with SiO2, Al5Fe2ZnO4 was present on the surface which also and might be responsible for
imparting additional strength to 7.5% RHA concrete at 300℃. The
X-ray diffraction studies of samples exposed to 1000℃ on temperature showed that
the additional chemical compounds formed at lower temperatures were not found
at 1000℃ at outer and inner surfaces of the sample indicating its possible
reason for exhibiting poor strengths for all specimens. The outer surface of
the 1000℃ heated specimen showed a compound named dichloroglyoxime C2H2Cl2N2O2 along with SiO2 but the inner surface of the same sample
showed SiO2 alone.