초록 ▼

Method for the production of cementitious compositions and aggregate derivatives of said compositions, and cementitious compositions and aggregates produced by said method, wherein fluidized bed combustion residue and pozzolanic material, such as pulverized coal combustion system fly ash, are incorp

Method for the production of cementitious compositions and aggregate derivatives of said compositions, and cementitious compositions and aggregates produced by said method, wherein fluidized bed combustion residue and pozzolanic material, such as pulverized coal combustion system fly ash, are incorporated in a cementitious mix. The mix is cast into desired shape and cured. If desired, the shape may then be crushed so as to result in a fluidized bed combustion residue-fly ash aggregate material or the shape may be used by itself.

대표청구항 ▼

Method of preparing cementitious compositions comprising: (a) collecting the spent residue from a fluidized combustion bed of the type wherein lime or limestone particles are suspended in a fluidized medium and wherein a carbonaceous fuel is ignited proximate said fluidized medium to capture therein

Method of preparing cementitious compositions comprising: (a) collecting the spent residue from a fluidized combustion bed of the type wherein lime or limestone particles are suspended in a fluidized medium and wherein a carbonaceous fuel is ignited proximate said fluidized medium to capture therein substantial amounts of SOx which is generated upon ignition of said carbonaceous fuel, (b) adding water to said spent residue in sufficient quantities to substantially hydrate the lime component of said spent residue, and mixing the mixture of water and spent residue, (c) adding a pozzolanic material to said mixture, (d) casting the mixture produced as a result of step (c) into the desired shape, and (e) curing the shape.