Effect of calcined dolomite addition on sodium carbonate-activated slag cements with different curing methods
Article
Article Title | Effect of calcined dolomite addition on sodium carbonate-activated slag cements with different curing methods |
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ERA Journal ID | 4146 |
Article Category | Article |
Authors | Zhang, Wei (Author), Yao, Xiao (Author), Yang, Tao (Author) and Zhang, Zuhua (Author) |
Journal Title | Advances in Cement Research |
Journal Citation | 31 (8), pp. 370-381 |
Number of Pages | 12 |
Year | 2019 |
Place of Publication | United Kingdom |
ISSN | 0951-7197 |
1751-7605 | |
Digital Object Identifier (DOI) | https://doi.org/10.1680/jadcr.17.00204 |
Web Address (URL) | https://www.icevirtuallibrary.com/doi/abs/10.1680/jadcr.17.00204 |
Abstract | This paper reports the performances of sodium carbonate-activated slag cements incorporating calcined natural dolomite (CD) under sealed and ambient curing conditions. The reaction process, compressive strength development and microstructure characteristics are studied, as well as the carbonation behaviour of the samples under ambient curing conditions. The CD contents vary from 0 to 10% and the sodium carbonate contents are fixed at 5% and 10%. The results show that the reaction process can be significantly accelerated by adding a small quantity of CD. Both increasing the concentration of sodium carbonate and extending the sealed curing are proven to be beneficial to compressive strength development of the samples. The main reaction products in the binders are calcite, calcium silicate hydrates and hydrotalcite-like phases. The curing regimes have a negligible influence on the formation of those phases. In terms of carbonation, increasing either CD or sodium carbonate contents can restrict the extent of carbonation of the samples. This is attributed to the formation of large quantities of hydrotalcite-like phases in the binder. |
Keywords | alkali-activated cements; blast furnace slag; calorimetry |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing Tech University, China |
Nanjing University of Technology, China | |
Yancheng Institute of Technology, China | |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4zqw/effect-of-calcined-dolomite-addition-on-sodium-carbonate-activated-slag-cements-with-different-curing-methods
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