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Influence of combustion temperature on the performance of sewage sludge ash as a supplementary cementitious material
File(s)
Author(s)
Vouk, D
Nakic, D
Stirmer, N
Cheeseman, C
Type
Journal Article
Abstract
© 2018, Springer Japan KK, part of Springer Nature. The potential for using sewage sludge ash (SSA) as a supplementary cementitious material (SCM) has been investigated. Controlled combustion of sewage sludge collected in Croatia from two wastewater treatment plants produced SSA with different characteristics. These were used to substitute for cement in mortar samples. The chemical composition and physical properties of SSA depend on wastewater composition, the sludge treatment process and the combustion temperature. These factors influence the suitability of SSA to be used as a SCM. For three different combustion temperatures (800, 900 and 1000 °C), it was concluded that properties of fresh mortar were not affected while in the hardened state, the most favorable combustion temperature is 900 °C regarding mechanical properties. Regardless of combustion temperature, for all types of SSA used in mortars as cement replacement (up to 30%), the average decrease in both compressive and flexural strength values was less than 8% for every 10% of added SSA. The results presented indicate that using up to 20% replacement of cement by SSA produces mortars that meet the specific technical requirements analyzed in this work.
Date Issued
2018-07-01
Date Acceptance
2018-01-23
Citation
Journal of Material Cycles and Waste Management, 2018, 20 (3), pp.1458-1467
URI
DOI
ISSN
1611-8227
Publisher
Springer Verlag
Start Page
1458
End Page
1467
Journal / Book Title
Journal of Material Cycles and Waste Management
Volume
20
Issue
3
Copyright Statement
© Springer Japan KK, part of Springer Nature 2018. The final publication is available at Springer via https://link.springer.com/article/10.1007%2Fs10163-018-0707-8
Subjects
0907 Environmental Engineering
Environmental Sciences
Publication Status
Published
Date Publish Online
2018-02-01