The effects of alumina-leached coal fly ash residue on magnesium oxychloride cement
Source abstract
Abstract
Effects of alumina-leached coal fly ash residue (ACFAR) on magnesium oxychloride (MOC) cement are comprehensively investigated. The results show that the addition of ACFAR delayed the setting time of MOC paste. The compressive strength, the flexural strength and the water resistance of MOC are improved by the incorporation of ACFAR. Furthermore, the improvement effects of ACFAR are compared with those of raw coal fly ash (RFA) on MOC cement. Scanning electron microscopy analysis of MOC cement reveals that ACFAR decreases the interspaces in MOC cement and facilitates the radial growth of 5Mg(OH)2·MgCl2·8H2O. X-ray diffraction analysis of MOC cement with ACFAR indicates that the addition of ACFAR promotes the production of magnesium silicate, which can improve the compactness of 5Mg(OH)2·MgCl2·8H2O and the water resistance of MOC cement.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Recycling and utilization of industrial and municipal waste in materials production · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Qinghai Institute of Salt Lake, Chinese Academic of Sciences, Xining, China; The Graduate University of Chinese Academy of Sciences, Beijing, China
Qinghai Institute of Salt Lake, Chinese Academic of Sciences, Xining, China; Department of Civil Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
References (20)
Show source-provided references
1. 10.1016/j.fuproc.2011.01.01710.1016/j.fuproc.2011.01.017 ↗
2. Cannesson E · Ceramics-silikaty · 2010 · 54 · 341
3. 10.1007/978-1-4020-5104-3_4110.1007/978-1-4020-5104-3_41 ↗
4. 10.1680/adcr.2008.20.2.8510.1680/adcr.2008.20.2.85 ↗
5. 10.1016/j.cemconcomp.2009.02.01110.1016/j.cemconcomp.2009.02.011 ↗
6. 10.1071/CH955023410.1071/CH9550234 ↗
7. 10.1016/S0008-8846(03)00043-710.1016/S0008-8846(03)00043-7 ↗
8. Dong JM · Journal of Salt Lake Research · 2010 · 18 · 38
9. GB/T · 2001
10. 10.1007/s11595-010-0079-y10.1007/s11595-010-0079-y ↗
11. 10.1016/0167-577X(94)90090-610.1016/0167-577X(94)90090-6 ↗
12. 10.1038/physci246079a010.1038/physci246079a0 ↗
13. 10.1007/s12034-007-0043-410.1007/s12034-007-0043-4 ↗
14. 10.1016/j.fuel.2004.09.00410.1016/j.fuel.2004.09.004 ↗
15. 10.1016/S0009-2509(98)00201-210.1016/S0009-2509(98)00201-2 ↗
16. Sorrel S · Comptes Rendus – Academie des Sciences · 1867 · 65 · 102
17. 10.1016/0008-8846(83)90084-410.1016/0008-8846(83)90084-4 ↗
18. 10.1016/S1003-6326(11)61461-110.1016/S1003-6326(11)61461-1 ↗
19. Yu HF · 1991
20. Yu HF · Journal of the Chinese Ceramic Society · 2000 · 28 · 33