Coal gasification ash and Weathered fly ash, as partial replacement of Portland cement - effect on selected durability properties of concrete

被引：0
|
作者：
Maboea, Dikeledi [1 ]
Otieno, Mike [1 ]
机构：
[1] Univ Witwatersrand, Sch Civil & Environm Engn, Johannesburg, South Africa
来源：
INTERNATIONAL CONFERENCE ON CONCRETE REPAIR, REHABILITATION AND RETROFITTING (ICCRRR 2018) | 2018年 / 199卷
关键词：
STRENGTH;
D O I：
10.1051/matecconf/201819902021
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
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.
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页数：5
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