Production of mortar with calcined alum sludge as partial cement replacement
Alum sludge is a largely generated and disposed waste from water treatment plants. This study aimed to produce mortar using alum sludge calcined at different temperatures (600 – 900 ºC). After the optimal calcination temperature was selected, the calcined alum sludge was used to replace 5, 10, and 1...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
|
| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/03/e3sconf_isgst2024_02008.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832098548381908992 |
|---|---|
| author | Wong Ai Wei Chew Hoong Yuin Bashir Mohammed J. K. Aldahdooh Majed A. A. Ng Choon Aun |
| author_facet | Wong Ai Wei Chew Hoong Yuin Bashir Mohammed J. K. Aldahdooh Majed A. A. Ng Choon Aun |
| author_sort | Wong Ai Wei |
| collection | DOAJ |
| description | Alum sludge is a largely generated and disposed waste from water treatment plants. This study aimed to produce mortar using alum sludge calcined at different temperatures (600 – 900 ºC). After the optimal calcination temperature was selected, the calcined alum sludge was used to replace 5, 10, and 15 % of cement by mass in mortar. The performance of the mortars was evaluated based on the workability, compressive strength, flexural strength, porosity, and percentage of water absorption. Mortars with alum sludge calcined at 800 ºC had the highest strength as compared to the other temperatures. The mechanical strength of mortars reduced while the porosity and percentage of water absorbed increased with increasing calcined alum sludge content. Although replacing 5 % of cement with calcined alum sludge would reduce the mechanical strengths by 13 – 15 %, it was still acceptable as it had negligible influence on the porosity and water absorption value of the mortar. In short, the partial substitution of cement with calcined alum sludge should be limited within 5 % to maintain the performance of the mortar. |
| format | Article |
| id | doaj-art-bf75565c66224ba0be36ff68a17d3bc3 |
| institution | Kabale University |
| issn | 2267-1242 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj-art-bf75565c66224ba0be36ff68a17d3bc32025-02-05T10:47:33ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016030200810.1051/e3sconf/202560302008e3sconf_isgst2024_02008Production of mortar with calcined alum sludge as partial cement replacementWong Ai Wei0Chew Hoong Yuin1Bashir Mohammed J. K.2Aldahdooh Majed A. A.3Ng Choon Aun4Faculty of Engineering and Green Technology, Universiti Tunku Abdul RahmanFaculty of Engineering and Green Technology, Universiti Tunku Abdul RahmanSchool of Engineering and Technology, Central Queensland UniversityDepartment of Facilities and Construction Project Management, International College of Engineering and Management | University of Central Lancashire (UK)Faculty of Engineering and Green Technology, Universiti Tunku Abdul RahmanAlum sludge is a largely generated and disposed waste from water treatment plants. This study aimed to produce mortar using alum sludge calcined at different temperatures (600 – 900 ºC). After the optimal calcination temperature was selected, the calcined alum sludge was used to replace 5, 10, and 15 % of cement by mass in mortar. The performance of the mortars was evaluated based on the workability, compressive strength, flexural strength, porosity, and percentage of water absorption. Mortars with alum sludge calcined at 800 ºC had the highest strength as compared to the other temperatures. The mechanical strength of mortars reduced while the porosity and percentage of water absorbed increased with increasing calcined alum sludge content. Although replacing 5 % of cement with calcined alum sludge would reduce the mechanical strengths by 13 – 15 %, it was still acceptable as it had negligible influence on the porosity and water absorption value of the mortar. In short, the partial substitution of cement with calcined alum sludge should be limited within 5 % to maintain the performance of the mortar.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/03/e3sconf_isgst2024_02008.pdf |
| spellingShingle | Wong Ai Wei Chew Hoong Yuin Bashir Mohammed J. K. Aldahdooh Majed A. A. Ng Choon Aun Production of mortar with calcined alum sludge as partial cement replacement E3S Web of Conferences |
| title | Production of mortar with calcined alum sludge as partial cement replacement |
| title_full | Production of mortar with calcined alum sludge as partial cement replacement |
| title_fullStr | Production of mortar with calcined alum sludge as partial cement replacement |
| title_full_unstemmed | Production of mortar with calcined alum sludge as partial cement replacement |
| title_short | Production of mortar with calcined alum sludge as partial cement replacement |
| title_sort | production of mortar with calcined alum sludge as partial cement replacement |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/03/e3sconf_isgst2024_02008.pdf |
| work_keys_str_mv | AT wongaiwei productionofmortarwithcalcinedalumsludgeaspartialcementreplacement AT chewhoongyuin productionofmortarwithcalcinedalumsludgeaspartialcementreplacement AT bashirmohammedjk productionofmortarwithcalcinedalumsludgeaspartialcementreplacement AT aldahdoohmajedaa productionofmortarwithcalcinedalumsludgeaspartialcementreplacement AT ngchoonaun productionofmortarwithcalcinedalumsludgeaspartialcementreplacement |