A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash
This study explores four different ways (tap water, deionized water, sodium chloride, and seawater) as the pretreatment methods of Municipal Solid Waste Incineration (MSWI) bottom ash used in mortar. After incorporation of the bottom ash as partial replacement of fine aggregate, the mixtures were ev...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523005296 |
| _version_ | 1797454627009986560 |
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| author | H.J. Kim Y. Yamada H. Zeng M. Iwanami |
| author_facet | H.J. Kim Y. Yamada H. Zeng M. Iwanami |
| author_sort | H.J. Kim |
| collection | DOAJ |
| description | This study explores four different ways (tap water, deionized water, sodium chloride, and seawater) as the pretreatment methods of Municipal Solid Waste Incineration (MSWI) bottom ash used in mortar. After incorporation of the bottom ash as partial replacement of fine aggregate, the mixtures were evaluated for compressive strength, heat of hydration, chloride content and shrinkage performance. The results reveal that all pretreated samples have comparable compressive strength at early age (day-7) and higher compressive strength at later age (day-120). Meanwhile, the pretreatment in tap water and deionized water can slightly reduce the chloride content, whereas the other two pretreatment methods induce extra chloride ions into the mixtures. The correlation between the chloride content and the peak temperature indicates the acceleration effect of chloride ions during hydration. In addition, all the specimens with pretreated MSWI aggregates have higher shrinkage regardless of pretreatment methods. |
| first_indexed | 2024-03-09T15:39:53Z |
| format | Article |
| id | doaj.art-6c227a74c44649ee855f6c0a89577939 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:53Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-6c227a74c44649ee855f6c0a895779392023-11-25T04:48:24ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02349A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ashH.J. Kim0Y. Yamada1H. Zeng2M. Iwanami3Department of Civil & Architectural Engineering & Mechanics, University of Arizona, 1209 E. 2nd Street, Room 207C, Tucson, AZ 85719, USA; Corresponding author.Department of Civil Engineering, College of Science and Technology, Nihon University, 1-8-14, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308, JapanDepartment of Civil & Architectural Engineering & Mechanics, University of Arizona, 1209 E. 2nd Street, Room 207C, Tucson, AZ 85719, USADepartment of Civil and Environmental Engineering, Tokyo Institute of Technology, 2-12-1-M1-21 Ookayama, Meguro, Tokyo 152-8552, JapanThis study explores four different ways (tap water, deionized water, sodium chloride, and seawater) as the pretreatment methods of Municipal Solid Waste Incineration (MSWI) bottom ash used in mortar. After incorporation of the bottom ash as partial replacement of fine aggregate, the mixtures were evaluated for compressive strength, heat of hydration, chloride content and shrinkage performance. The results reveal that all pretreated samples have comparable compressive strength at early age (day-7) and higher compressive strength at later age (day-120). Meanwhile, the pretreatment in tap water and deionized water can slightly reduce the chloride content, whereas the other two pretreatment methods induce extra chloride ions into the mixtures. The correlation between the chloride content and the peak temperature indicates the acceleration effect of chloride ions during hydration. In addition, all the specimens with pretreated MSWI aggregates have higher shrinkage regardless of pretreatment methods.http://www.sciencedirect.com/science/article/pii/S2214509523005296MSWIBottom AshRecyclingChloride BindingShrinkage |
| spellingShingle | H.J. Kim Y. Yamada H. Zeng M. Iwanami A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash Case Studies in Construction Materials MSWI Bottom Ash Recycling Chloride Binding Shrinkage |
| title | A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash |
| title_full | A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash |
| title_fullStr | A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash |
| title_full_unstemmed | A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash |
| title_short | A study of chloride pretreatment methods for enhancing strength of mortar by recycling Municipal Solid Waste Incineration (MSWI) bottom ash |
| title_sort | study of chloride pretreatment methods for enhancing strength of mortar by recycling municipal solid waste incineration mswi bottom ash |
| topic | MSWI Bottom Ash Recycling Chloride Binding Shrinkage |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523005296 |
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