Investigation of Red mud, Rice Husk and Anthillbased Geopolymercomposite for Engineering applications

摘要

Quite a lot of geological surveys concede that Guinea is home to 33% of the world’s known bauxite reserves.The industrialscale conversion of rawmaterialssuch as bauxite intoproducts or intermmediates releases hugequantities of wasteposingenvironmentalconcerns,Red mud RM is a solid waste resulting from the digestion of bauxite ores with caustic soda for alumina production,treating and disposal of RM has become a concern,Riceis the second largestproducedcereal in the world,itiscomposed by approximately 20% of ricehusk RH, whichcontainsa fibrousmaterials and silica. Due to its high percentage in the grain composition, the RH isconsidered a by-productthatcreatesdisposal and pollution concern. Rice huskash RHA is an industrialwasteproduced by burningricehuskprimarily for the generation of electricity. Because of its high silicon content, RH has become a source for preparation of several engineering materials. The alkali activation convertsindustrialwasteintovaluable engineering materialscalledgeopolymers GP.In comparison to ordinaryporltlandcement OPC, GP are producedwithsignificantreduction of energyconsumption and CO2 emissions,Theyrepresent alternative bindingmaterialswithhugepotential for civil engineering applications or for waste management[1].In thischapter RM, RH and anthill AH soil are used to prepare a ternaryblendedmaterial for building purposes in laboratory conditions. The effect of blending ratio on the compressive strengthwereinvestigated.Raw materials and the final products are characterized by several methods: XRD, SEM.