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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50368

Title: Utilizing residues of CFB co-combustion of coal, sludge and TDF as an alkali activator in eco-binder
Authors: Yann-Hwang Wu
Ran Huang
Chia-Jung Tsai
Wei-Ting Lin
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: Circulating fluidized bed
Co-fired fly ash
Ground granulated blast-furnace slag
Alkali activator
Ettringite
Compressive strength reduction
Date: 2015-04
Issue Date: 2018-10-05T07:51:03Z
Publisher: Construction and Building Materials
Abstract: Abstract: Residues of co-combustion are not addressed in Taiwan standards for fly ash use in concrete. This paper presents feasibility of re-utilizing CFB co-fired fly ash (CFFA) as an alkali activator for the eco-binder of CFFA and GGBS. The optimal mixture of the binder is specimen F3S7, which reaches 31.43 MPa that is 72.4% compressive strength of OPM at 56 days. XRD and SEM showed that CFFA activated the GGBS to generate CaO, which reacted with H2O, SiO2, and Al2O3 to form C–S–H and C–A–S–H pastes. Compressive strength reduction trend for F4S6 to F7S3 started after 28 days because high SO3 content.
Relation: 80 pp.69-75
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50368
Appears in Collections:[河海工程學系] 期刊論文

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