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

Dikeledi Maboea; Mike Otieno

doi:10.1051/matecconf/201819902021

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

Dikeledi Maboea, Mike Otieno

Research output: Contribution to journal › Conference article › peer-review

Abstract

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.

Original language	English
Article number	02021
Journal	MATEC Web of Conferences
Volume	199
DOIs	https://doi.org/10.1051/matecconf/201819902021
Publication status	Published - 31 Oct 2018
Externally published	Yes
Event	5th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2018 - Cape Town, South Africa Duration: 19 Nov 2018 → 21 Nov 2018

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10.1051/matecconf/201819902021

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

abstract = "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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AU - Maboea, Dikeledi

AU - Otieno, Mike

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Y1 - 2018/10/31

N2 - 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.

AB - 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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DO - 10.1051/matecconf/201819902021

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SN - 2274-7214

VL - 199

JO - MATEC Web of Conferences

JF - MATEC Web of Conferences

M1 - 02021

T2 - 5th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2018

Y2 - 19 November 2018 through 21 November 2018

ER -

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

Abstract

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