ALKALI-ACTIVATED FLY ASH-CEMENT AND FABRICATING METHOD THEREOF

摘要

A composition of fiy ash cement activated to alkali is provided to recycle F class fly ash to useful constructional materials by converting the F class fly ash of which a recyclability ration is very low into material carrying property of cement without portland cement. A composition of fiy ash cement activated to alkali is made by mixing alkali activating solution including sodium metasilicate, fly ash and standard sand. A weight percent of alkali working solution: fly ash: standard sand is 400 : 700 : 300. The alkali working solution is made by mixing alkaline solution, sodium metasilicate and water. The alkaline solution is one of NaOH, potassium hydroxide and sodium silicate.