Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase
As a by-product from the incineration of municipal solid waste, bottom ash has a broad application prospect of resource utilization. In this study, bottom ash was selected as partial aggregate alternative and used as roadbase materials. The cemented aggregate containing bottom ash was evaluated thro...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/5694908 |
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| _version_ | 1832563589007802368 |
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| author | Qiang Tang Fan Gu Hui Chen Cong Lu Yu Zhang |
| author_facet | Qiang Tang Fan Gu Hui Chen Cong Lu Yu Zhang |
| author_sort | Qiang Tang |
| collection | DOAJ |
| description | As a by-product from the incineration of municipal solid waste, bottom ash has a broad application prospect of resource utilization. In this study, bottom ash was selected as partial aggregate alternative and used as roadbase materials. The cemented aggregate containing bottom ash was evaluated through both experimental and numerical analysis. According to the results, the unconfined compressive strength of samples increases with the curing time, and the failure strain of sample decreases with the curing time. The unconfined compressive strength and failure strain of samples are influenced by the types of bottom ash. The increase of compressive strength with the curing time can be attributed to that the hydration reaction of cement will be more complete when the curing time is longer. The representative value (7 days) of unconfined compressive strength of samples meets the strength requirement (≥2.5 MPa) of the road subbase layer of heavy traffic highway in China. Subsequently, the surface settlement decreases with the increase of the modulus and thickness of roadbase and the distance from the centerline, while the settlement increases with vehicle load increasing. The modulus of the roadbase is not the main influences on the pavement settlement, under the condition that the strength of samples meets the requirements. However, increasing the thickness of roadbase can reduce the settlement at the center of the pavement effectively. |
| format | Article |
| id | doaj-art-b752473bf8264138ac957a9d54262fb3 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-b752473bf8264138ac957a9d54262fb32025-02-03T01:13:14ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/56949085694908Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in RoadbaseQiang Tang0Fan Gu1Hui Chen2Cong Lu3Yu Zhang4Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, ChinaNational Center for Asphalt Technology, Auburn University, Auburn, AL, USASchool of Rail Transportation, Soochow University, Suzhou, ChinaSchool of Civil Engineering, Suzhou University of Science and Technology, Suzhou, ChinaSchool of Rail Transportation, Soochow University, Suzhou, ChinaAs a by-product from the incineration of municipal solid waste, bottom ash has a broad application prospect of resource utilization. In this study, bottom ash was selected as partial aggregate alternative and used as roadbase materials. The cemented aggregate containing bottom ash was evaluated through both experimental and numerical analysis. According to the results, the unconfined compressive strength of samples increases with the curing time, and the failure strain of sample decreases with the curing time. The unconfined compressive strength and failure strain of samples are influenced by the types of bottom ash. The increase of compressive strength with the curing time can be attributed to that the hydration reaction of cement will be more complete when the curing time is longer. The representative value (7 days) of unconfined compressive strength of samples meets the strength requirement (≥2.5 MPa) of the road subbase layer of heavy traffic highway in China. Subsequently, the surface settlement decreases with the increase of the modulus and thickness of roadbase and the distance from the centerline, while the settlement increases with vehicle load increasing. The modulus of the roadbase is not the main influences on the pavement settlement, under the condition that the strength of samples meets the requirements. However, increasing the thickness of roadbase can reduce the settlement at the center of the pavement effectively.http://dx.doi.org/10.1155/2018/5694908 |
| spellingShingle | Qiang Tang Fan Gu Hui Chen Cong Lu Yu Zhang Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase Advances in Civil Engineering |
| title | Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase |
| title_full | Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase |
| title_fullStr | Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase |
| title_full_unstemmed | Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase |
| title_short | Mechanical Evaluation of Bottom Ash from Municipal Solid Waste Incineration Used in Roadbase |
| title_sort | mechanical evaluation of bottom ash from municipal solid waste incineration used in roadbase |
| url | http://dx.doi.org/10.1155/2018/5694908 |
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