SolidificationStabilization of Fly Ash from a Municipal Solid Waste Incineration Facility Using Portland Cement
Joint Authors
Tang, Qiang
Liu, Yang
Gu, Fan
Zhou, Ting
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-04
Country of Publication
Egypt
No. of Pages
10
Abstract EN
This study investigated the solidification/stabilization of fly ash containing heavy metals using the Portland cement as a binder.
It is found that both the cement/fly ash ratio and curing time have significant effects on the mechanical (i.e., compressive strength) and leaching behaviors of the stabilized fly ash mixtures.
When the cement/fly ash ratio increases from 4 : 6 to 8 : 2, the increase of compressive strength ratio raises from 42.24% to 80.36%; meanwhile, the leaching amount of heavy metals decreases by 2.33% to 85.23%.
When the curing time increases from 3 days to 56 days, the compressive strength ratio of mixtures raises from 240.00% to 414.29%; meanwhile, the leaching amount of heavy metals decreases by 16.49% to 88.70%.
The decrease of compressive strength with the lower cement/fly ash ratios and less curing time can be attributed to the increase of fly ash loading, which hinders the formation of ettringite and destroys the structure of hydration products, thereby resulting in the pozzolanic reaction and fixation of water molecules.
Furthermore, the presence of cement causes the decrease of leaching, which results from the formation of ettringite and the restriction of heavy metal ion migration in many forms, such as C-S-H gel and adsorption.
American Psychological Association (APA)
Tang, Qiang& Liu, Yang& Gu, Fan& Zhou, Ting. 2016. SolidificationStabilization of Fly Ash from a Municipal Solid Waste Incineration Facility Using Portland Cement. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1096353
Modern Language Association (MLA)
Tang, Qiang…[et al.]. SolidificationStabilization of Fly Ash from a Municipal Solid Waste Incineration Facility Using Portland Cement. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1096353
American Medical Association (AMA)
Tang, Qiang& Liu, Yang& Gu, Fan& Zhou, Ting. SolidificationStabilization of Fly Ash from a Municipal Solid Waste Incineration Facility Using Portland Cement. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1096353
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096353