| Issue |
MATEC Web Conf.
Volume 199, 2018
International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2018)
|
|
|---|---|---|
| Article Number | 02021 | |
| Number of page(s) | 5 | |
| Section | Concrete Deteriorating Mechanisms and Prediction of Durability | |
| DOI | https://doi.org/10.1051/matecconf/201819902021 | |
| Published online | 31 October 2018 | |
Coal gasification ash and Weathered fly ash, as partial replacement of Portland cement – effect on selected durability properties of concrete
School of Civil and Environmental Engineering, University of the Witwatersrand, Johannesburg
* Corresponding author: nkele6@gmail.com
This study uses Sasol ashes as cement extenders to contribute to the technology of partially replacing Portland cement by mass. There are two types of Sasol ashes; coal gasification ash (CGA) and weathered fly ash (WFA) produced from low grade coal. These ashes are disposed of by Sasol with no specific utilisation. In this investigation, PC will be partially replaced by mass with WFA, CGA and FA at 10%, 15% and 30% proportions for each type of ash. The durability indices will be measured and compared for all blended specimen (PC/WFA, PC/CGA and PC/FA). A 100% Portland cement specimen will be used as a control. The durability properties will be used to determine the potential of Sasol ashes being used as a cement extender.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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