Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A preliminary assessment on reusage of flyash emitted from fluidized bed incineration of sludge cake
A series of experimental tests to asses the recovery feasibility of FBI (fluidized bed incineration) flyash have been carried out. The results not only propose an approach to evaluate flyash reuse by inspecting the macro- and micro-characteristics of flyash-cement paste but also indicate a potential reuse scheme for FBI flyash as a resource in concrete material. Two important aspects have been proven: the FBI flyash poses a potential 'Portland reactivity', and hence, has positive effect on the strain strength of concrete in early hardening period; and some properties, such as workability, or setting time, would be adjusted by adding the flyash into paste. Though some properties of the flyash-cement are not better than that of cement without flyash mixing, the utilization of FBI flyash in concrete material is feasible when focusing attention on final disposal cost. Especially for a crowed area with limited or no landfill area like Taiwan, this application of flyash is a promising solution to flyash disposal. The FBI flyash can be utilized as an alternative to a higher grade concrete material, e.g. in heavy construction, or a lower grade concrete material e.g. as sidewalk flag, or hollow concrete block. The research results show that an application of FBI flyash in concrete material would be feasible when mixing the flyash in an appropriate ratio.
A preliminary assessment on reusage of flyash emitted from fluidized bed incineration of sludge cake
A series of experimental tests to asses the recovery feasibility of FBI (fluidized bed incineration) flyash have been carried out. The results not only propose an approach to evaluate flyash reuse by inspecting the macro- and micro-characteristics of flyash-cement paste but also indicate a potential reuse scheme for FBI flyash as a resource in concrete material. Two important aspects have been proven: the FBI flyash poses a potential 'Portland reactivity', and hence, has positive effect on the strain strength of concrete in early hardening period; and some properties, such as workability, or setting time, would be adjusted by adding the flyash into paste. Though some properties of the flyash-cement are not better than that of cement without flyash mixing, the utilization of FBI flyash in concrete material is feasible when focusing attention on final disposal cost. Especially for a crowed area with limited or no landfill area like Taiwan, this application of flyash is a promising solution to flyash disposal. The FBI flyash can be utilized as an alternative to a higher grade concrete material, e.g. in heavy construction, or a lower grade concrete material e.g. as sidewalk flag, or hollow concrete block. The research results show that an application of FBI flyash in concrete material would be feasible when mixing the flyash in an appropriate ratio.
A preliminary assessment on reusage of flyash emitted from fluidized bed incineration of sludge cake
Chang, Y.M. (Autor:in) / Lin, L.K. (Autor:in) / Chang, T.C. (Autor:in)
Resources, Conservation and Recycling ; 20 ; 245-266
1997
22 Seiten, 14 Bilder, 4 Tabellen, 11 Quellen
Aufsatz (Zeitschrift)
Englisch
Sludge Incineration Employing Fluidized Bed Combustor in Sendai City
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PAH Emissions from the Fluidized-Bed Incineration of an Industrial Sludge
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Incineration of Paper Sludge in a Prototype Vortexing Fluidized Bed Combustor
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