Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite
In this project, we aim to probe four different automotive paint sludge (APS) types; primer coat, phosphate pretreatment coat, base coat and clear coat sludge, as potential additives in cement paste. Specifically, Portland Cement paste was doped with the different APS types which only underwent...
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University Amar Telidji of Laghouat
2025-06-01
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| Series: | Journal of Building Materials and Structures |
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| Online Access: | http://journals.lagh-univ.dz/index.php/jbms/article/view/4138 |
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| author | Athi-enkosi Mavukwana Litha Yapi Julia Molto-Berenguer Nofemele Zuko |
| author_facet | Athi-enkosi Mavukwana Litha Yapi Julia Molto-Berenguer Nofemele Zuko |
| author_sort | Athi-enkosi Mavukwana |
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In this project, we aim to probe four different automotive paint sludge (APS) types; primer coat, phosphate pretreatment coat, base coat and clear coat sludge, as potential additives in cement paste. Specifically, Portland Cement paste was doped with the different APS types which only underwent drying and milling on receipt from a vehicle assembly plant. The mixture was then cured for 7 days, and the resulting concrete was subjected to consistency, setting time, flexural strength and compressive strength tests. On comparison with the control cement paste, the primer coat sludge generally increased the setting time, by as much as 40 % for the final setting time. The compressive strength is negatively affected by the addition of all the different APS. This is somewhat mitigated if clearcoat sludge is used at a 1 wt.%: the difference is less than 10 % to the control. The phosphate pre-treatment coat is the worst performer with a difference of more than 90 %, even at a low APS concentration of 3 wt.% in the cement paste. In contrast, the flexural strength increases with the addition of all but one of the four APS types: phosphate pre-treatment coat. Primer coat sludge is associated with as much as 50 % increase in flexural strength. These results tentatively, show the utility of APS as an additive in cement paste to potentially tailor its properties, thereby decreasing the detrimental environmental impact of disposing of it. APS may also find application in refractory and clay brick manufacture.
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| format | Article |
| id | doaj-art-a4461f887f2b414d97fa9e230f9c6d7a |
| institution | Kabale University |
| issn | 2353-0057 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | University Amar Telidji of Laghouat |
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| series | Journal of Building Materials and Structures |
| spelling | doaj-art-a4461f887f2b414d97fa9e230f9c6d7a2025-08-20T03:28:22ZengUniversity Amar Telidji of LaghouatJournal of Building Materials and Structures2353-00572025-06-0112110.34118/jbms.v12i1.4138Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based compositeAthi-enkosi Mavukwana0Litha Yapi1Julia Molto-Berenguer2Nofemele Zuko 3Department of Chemical and Materials Engineering, University of South Africa, Roodepoort, South Africa.Department of Chemical Engineering, University of Pretoria, Pretoria, South Africa.Department of Chemical Engineering, University Alicante, Alicante, Spain.Paint Shop Process Department, Volkswagen Group South Africa, Kariega, South Africa In this project, we aim to probe four different automotive paint sludge (APS) types; primer coat, phosphate pretreatment coat, base coat and clear coat sludge, as potential additives in cement paste. Specifically, Portland Cement paste was doped with the different APS types which only underwent drying and milling on receipt from a vehicle assembly plant. The mixture was then cured for 7 days, and the resulting concrete was subjected to consistency, setting time, flexural strength and compressive strength tests. On comparison with the control cement paste, the primer coat sludge generally increased the setting time, by as much as 40 % for the final setting time. The compressive strength is negatively affected by the addition of all the different APS. This is somewhat mitigated if clearcoat sludge is used at a 1 wt.%: the difference is less than 10 % to the control. The phosphate pre-treatment coat is the worst performer with a difference of more than 90 %, even at a low APS concentration of 3 wt.% in the cement paste. In contrast, the flexural strength increases with the addition of all but one of the four APS types: phosphate pre-treatment coat. Primer coat sludge is associated with as much as 50 % increase in flexural strength. These results tentatively, show the utility of APS as an additive in cement paste to potentially tailor its properties, thereby decreasing the detrimental environmental impact of disposing of it. APS may also find application in refractory and clay brick manufacture. http://journals.lagh-univ.dz/index.php/jbms/article/view/4138Cement pasteadmixturesetting timeautomotive paint sludge |
| spellingShingle | Athi-enkosi Mavukwana Litha Yapi Julia Molto-Berenguer Nofemele Zuko Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite Journal of Building Materials and Structures Cement paste admixture setting time automotive paint sludge |
| title | Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite |
| title_full | Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite |
| title_fullStr | Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite |
| title_full_unstemmed | Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite |
| title_short | Evaluating the effect of different types of dried Automotive Paint Sludge as cement-based composite |
| title_sort | evaluating the effect of different types of dried automotive paint sludge as cement based composite |
| topic | Cement paste admixture setting time automotive paint sludge |
| url | http://journals.lagh-univ.dz/index.php/jbms/article/view/4138 |
| work_keys_str_mv | AT athienkosimavukwana evaluatingtheeffectofdifferenttypesofdriedautomotivepaintsludgeascementbasedcomposite AT lithayapi evaluatingtheeffectofdifferenttypesofdriedautomotivepaintsludgeascementbasedcomposite AT juliamoltoberenguer evaluatingtheeffectofdifferenttypesofdriedautomotivepaintsludgeascementbasedcomposite AT nofemelezuko evaluatingtheeffectofdifferenttypesofdriedautomotivepaintsludgeascementbasedcomposite |