Stabilization of Lake Sludge with Circulating Fluidized Bed Combustion (CFBC) Fly Ash and Cement

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	Stabilization of Lake Sludge with Circulating Fluidized Bed Combustion (CFBC) Fly Ash and Cement
	Wang, Wei 2; Tang, Hua 1
刊名	DISASTER ADVANCES
	2012
卷号	5 期号:4 页码:1026-1030
关键词	Stabilization Cement CFBC fly ash Lake sludge Microstructure
ISSN号	0974-262X
英文摘要	Circulating fluidized bed combustion (CFBC) fly ash is mixed with cement in a different ratio for use as a stabilizer to stabilize lake sludge. Four different ratios (in wt%: 6%, 9%, 12% and 15%) of the stabilizer with different ratio of CFBC fly ash /cement (60:40, 50:50, 40:60, 0:100) are mixed with lake sludge to make stabilized samples. In order to understand the influences of admixtures on the lake sludge properties, tests of the compaction test, unconfined compressive strength and SEM observation are performed. Test results show that in term of compactability, the maximum dry densities of the specimens increase as more admixtures (between 6% and 12%) are added, however, the dry side density is decreased for the 15% admixture. At the same curing time and content of the stabilization materials, the strength of the specimens is decreased with the increasing of the CFBC fly ash/cement ratio. Also it can be observed that the optimum ratio between CFBC fly ash and cement is 2:3. The hydration products from cement and CFBC fly ash, i.e. C-S-H gel and the AFt crystal act as binder to solidify those particles together and fill in the packing void of the aggregates.
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种	英语
出版者	DISASTER ADVANCES
WOS记录号	WOS:000313100100172
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3381]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Wuhan Inst Technol, Phosphor Resources Ctr
推荐引用方式 GB/T 7714	Wang, Wei,Tang, Hua. Stabilization of Lake Sludge with Circulating Fluidized Bed Combustion (CFBC) Fly Ash and Cement[J]. DISASTER ADVANCES,2012,5(4):1026-1030.
APA	Wang, Wei,&Tang, Hua.(2012).Stabilization of Lake Sludge with Circulating Fluidized Bed Combustion (CFBC) Fly Ash and Cement.DISASTER ADVANCES,5(4),1026-1030.
MLA	Wang, Wei,et al."Stabilization of Lake Sludge with Circulating Fluidized Bed Combustion (CFBC) Fly Ash and Cement".DISASTER ADVANCES 5.4(2012):1026-1030.