Utilization of CFB Fly Ash in Eco-Cement: Mechanical Properties and Microstructural Analysis
In: Advanced Materials Research, 2010-10-01, S. 885-889
Online
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Zugriff:
The disposal of circulating fluidized bed (CFB) fly ash has been a serious environmental problem in the development of our society. In this work, the feasibility of recycling CFB fly ash as a blended material incorporating blast furnace slag (BFS), clinker and gypsum for the preparation of Eco-cement has been investigated. The mechanical properties of CFB fly ash based Eco-cements, including CFB fly ash–clinker system, CFB fly ash–ground BFS system, and CFB fly ash–ground BFS–clinker system, were evaluated in this paper. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were used to analyze the microstructural changes and the hydration products of the CFB fly ash based Eco-cement pastes. The results indicated that it is feasible to use CFB fly ash along with BFS and clinker to produce Eco-cement. The hydration products of CFB fly ash based Eco-cement are mostly ettringite and amorphous C-S-H gel, which are principally responsible for the strength and structure development of CFB fly ash based Eco-cement in the hydration process.
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Utilization of CFB Fly Ash in Eco-Cement: Mechanical Properties and Microstructural Analysis
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Autor/in / Beteiligte Person: | Zhang, Lingling ; Da Qing Cang ; Li, Yu ; Xiao Ming Liu |
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Zeitschrift: | Advanced Materials Research, 2010-10-01, S. 885-889 |
Veröffentlichung: | Trans Tech Publications, Ltd., 2010 |
Medientyp: | unknown |
ISSN: | 1662-8985 (print) |
DOI: | 10.4028/www.scientific.net/amr.150-151.885 |
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