X-Ray Diffraction Studies of Rice Husk Ash—An Ecofriendly Concrete at Different Temperatures

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 Cu 3 FePbTe 4 along with SiO 2 , Al 5 Fe 2 ZnO 4 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 show ed 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 C 2 H 2 Cl 2 N 2 O 2 along with SiO 2 but the inner surface of the same sample showed SiO 2 alone.