A comparative study of the effects of two alkanolamines on cement hydration
Source abstract
Abstract
The effects of two alkanolamines, triethanolamine (TEA) and diethanol-isopropanolamine (DEIPA), on cement hydration were comparatively investigated by several techniques including calorimetry, in situ X-ray diffraction analysis and pore solution analysis. Results show that the cement hydration regime is greatly altered by the alkanolamines, depending on their types and dosages. At the dosage of 0.5%, the aluminate reactions, including the formation of AFt and the reaction of C4AF, are greatly accelerated, and consequently the silicate hydration is retarded. Compared to DEIPA, TEA increases the [Al] in pore solution, probably due to the stronger complexation with aluminate ions (Al(OH)4−), while DEIPA notably enhances the dissolution of C4AF after depletion of gypsum, suggesting a stronger complexation with iron ions (Fe3+). Through a comparison of the hydration of pure alite and cement systems, it is found that the effects of the two alkanolamines on cement hydration are primarily influenced by their impacts on the aluminate reaction.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Assistant, Department of Civil Engineering, Tsinghua University, Beijing, P. R. China
Professor, Department of Civil Engineering, Tsinghua University, Beijing, P. R. China (corresponding author: )
Geologist, Mineralogy, GeoZentrum Nordbayern, University of Erlangen-Nuremberg, Erlangen, Germany (corresponding author: )
PhD candidate, Department of Civil Engineering, Tsinghua University, Beijing, P. R. China
References (28)
Show source-provided references
1. 10.1016/j.cemconres.2016.12.00610.1016/j.cemconres.2016.12.006 ↗
2. 10.1002/(SICI)1097-0231(199709)11:14<1612::AID-RCM1>3.0.CO;2-K10.1002/(SICI)1097-0231(199709)11:14<1612::AID-RCM1>3.0.CO;2-K ↗
3. 10.1111/j.1151-2916.1993.tb03934.x10.1111/j.1151-2916.1993.tb03934.x ↗
4. 10.1016/j.conbuildmat.2015.06.01810.1016/j.conbuildmat.2015.06.018 ↗
5. 10.1016/S0008-8846(96)85007-110.1016/S0008-8846(96)85007-1 ↗
6. 10.1016/j.cemconres.2010.09.01410.1016/j.cemconres.2010.09.014 ↗
7. 10.1016/j.cemconres.2011.03.00410.1016/j.cemconres.2011.03.004 ↗
8. 10.1016/j.conbuildmat.2008.09.00310.1016/j.conbuildmat.2008.09.003 ↗
9. Kharat AN · Asian Journal of Chemistry · 2009 · 21 · 775
10. 10.1016/j.cemconres.2015.04.01410.1016/j.cemconres.2015.04.014 ↗
11. 10.1016/j.conbuildmat.2016.12.19110.1016/j.conbuildmat.2016.12.191 ↗
12. 10.1016/j.cemconcomp.2018.11.01410.1016/j.cemconcomp.2018.11.014 ↗
13. Lu Z · Cement and Concrete Research · 2020 · 96 · 9
14. Ma B · Journal of Building Materials · 2006 · 9 · 6
15. 10.1016/j.cemconres.2014.09.00210.1016/j.cemconres.2014.09.002 ↗
16. 10.1021/acs.langmuir.6b0347410.1021/acs.langmuir.6b03474 ↗
17. 10.1016/j.cemconres.2018.09.00110.1016/j.cemconres.2018.09.001 ↗
18. 10.1016/S0014-3057(01)00044-110.1016/S0014-3057(01)00044-1 ↗
19. 10.1016/j.cemconres.2017.06.00610.1016/j.cemconres.2017.06.006 ↗
20. Ramachandran VS · Journal of Chemical Technology and Biotechnology · 1972 · 22 · 1125
21. 10.1016/0008-8846(73)90060-410.1016/0008-8846(73)90060-4 ↗
22. 10.1016/0008-8846(76)90026-010.1016/0008-8846(76)90026-0 ↗
23. Ramachandran VS · 1985 · 121
24. 10.1016/j.cemconres.2010.01.00810.1016/j.cemconres.2010.01.008 ↗
25. 10.1016/j.cemconres.2011.03.02610.1016/j.cemconres.2011.03.026 ↗
26. 10.1016/j.conbuildmat.2017.03.01010.1016/j.conbuildmat.2017.03.010 ↗
27. 10.1016/j.conbuildmat.2017.02.07210.1016/j.conbuildmat.2017.02.072 ↗
28. 10.1016/j.cemconres.2016.05.00910.1016/j.cemconres.2016.05.009 ↗