Reducing Environment Pollution by Reusing of Alum Sludge Waste in Stone Mastic Asphalt Mixtures
ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY
View Publication Info| Field | Value | |
| Title |
Reducing Environment Pollution by Reusing of Alum Sludge Waste in Stone Mastic Asphalt Mixtures
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| Creator |
Mahmood, Omar T.
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| Subject |
Stone mastic asphalt
Alum sludge Burned alum sludge Dried alum sludge Alum sludge reuse Environment pollution |
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| Description |
Globally, a huge quantity of alum sludge waste is produced as a by-product material from drinking water treatment plants that utilize aluminum salts as an essential coagulate and is the most generally produced water treatment remaining sludge around the world, which causes a serious environmental problem. Direct discarding of this substance has ecological effects. Hence, it is important to reuse this alum sludge waste material in such a manner to diminish its detrimental impacts on the environment. This research investigates the possibility of reusing alum sludge waste as a partial replacement of cement filler in stone mastic asphalt (SMA) paving mixtures. For this investigation, the alum sludge was used as a filler material in SMA mixtures in two modes; dried alum sludge at 110°C and burned alum sludge at 700°C. Different percentages of alum sludge were used as a replacement by the total weight of mineral filler at 0, 20, 40, 60, 80, and 100%. The results showed that using alum sludge as a substitution of filler in SMA mixtures reduces the performance of the mixtures in terms of Marshall properties and tensile strength for both dried and burned alum sludge compared with a standard mix. However, the performance of the mixtures containing burned alum sludge gave a better performance than the mixtures containing dried alum sludge.
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| Publisher |
Koya University
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| Date |
2021-12-07
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| Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion Peer-reviewed article text |
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| Format |
application/pdf
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| Identifier |
http://aro.koyauniversity.org/index.php/aro/article/view/871
10.14500/aro.10871 |
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| Source |
ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY; Vol. 9 No. 2 (2021): Issue Seventeen; 76-82
2307-549X 2410-9355 |
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| Language |
eng
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| Relation |
http://aro.koyauniversity.org/index.php/aro/article/view/871/238
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| Rights |
Copyright (c) 2021 Omar T. Mahmood
https://creativecommons.org/licenses/by-nc-sa/4.0 |
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