Due to high material consumption, infrastructure construction is rapidly becoming a serious problem in this world, particularly developing countries. Concrete produced greater amounts, as result of aggregate shortage The focus research was see if ash can substitute for fine aggregates concrete sample collected from the Ayka Addis mill pond ash.The experimental laboratory work used conduct tests...

Fly ashes are usually contaminated with toxic heavy metals. These metals are leaching out aftercontact with water during wet disposal system, thus polluting the soil, surface and groundwater. In the present study, a hydroponics experiment was conducted to examine the removalof heavy metals Cd, Pb and Zn by Eichhornia crassipes grown at various concentration of fly ash ranging from 10, 20 and 40...