I am have done chemical composition analysis of fly ash and steel slag. I want to know the effects of all constituents like SiO2 , CaO etc, presents in both samples, on leaching behavior and their leaching potential.
Hello Manoj,
chemical analysis are important information, but without mineralogy analysis are still number, difficult to use, thinks about silica flour ,almost all (99,9%) of SiO2 and microsilica (more than 99,5%) of SiO2, but as you surely know , big differences in reactivity . So while silica flour isn't at all reactive (inert) , microsilica are very reactive (pozzolanic effect for example), because of their mineralogy (flour is very fine but completely crystalline, microsilica completely amorphous and maybe 10-20 times finer), their chemistry is the same in terms of oxides analysis .
So to give you an useful answer , you need to specify what do you want to do with your FA and slag...alkali activated material (big problem of leachings caused by partially hydrates minerals into the system), geopolymers (inorganic polymers with no hydrate phase so very close matrix that permits also toxic wast inertization, with almost 0 leachings), or what kind of material?
Regards
Alex
Is there any relationship between chemical characterization and leaching potential for fly ash and steel slag?
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