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250912s2025 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2025.115122
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|a pubmed25n1582.xml
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|a (DE-627)NLM392396653
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|a (NLM)40934699
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|a (PII)S0956-053X(25)00533-1
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|a eng
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|a Shen, Xinhao
|e verfasserin
|4 aut
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|a The recycling use of MSWI bottom ash as road construction material for carbon emissions reduction based on life cycle Assessment-A case study in China
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|c 2025
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 26.09.2025
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|a Date Revised 26.09.2025
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2025 Elsevier Ltd. All rights reserved.
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|a This study evaluates the potential of municipal solid waste incineration-bottom ash (MSWI-BA) as a partial substitute for natural aggregates (NAs) in asphalt pavement, focusing on carbon emissions reduction. A comparative life cycle assessment (LCA) was conducted for a 5.142-km municipal road (Guangying Avenue, Sichuan, China) under two scenarios: a conventional pavement with NAs and a pavement incorporating MSWI-BA aggregates (MAs) at optimised (Alternative A) and maximised (Alternative B) substitution rates. The LCA covered raw-material production, transportation, and construction phases, using carbon emission factors (CEFs) and a Data Quality Indicator-Monte Carlo uncertainty analysis for robust quantification. Results indicate that high substitution of Mas yields significant carbon savings. Under Alternative B (70 % MA in the base layer and 100 % in the subbase/capping layers), the pavement saved approximately 2.78 × 104 tonnes of NAs and reduced life-cycle emissions by about 31 %. The greatest reductions occurred in lower layers, with base, subbase, and capping courses achieving 51 %-78 % CE reductions, compared to only 5 % in the surface layer. Transportation emissions partially offset benefits, as MAs were transported 156 km compared to 8 km for NAs. Local processing (Alternative B within 50 km) is recommended to maximise net gains. Despite a modest 7 % increase in construction-phase energy use for MA paving, the overall carbon benefit remains clear. These findings highlight the scalability of MSWI-BA for low-carbon road construction and provide practical insights for engineers and policymakers pursuing sustainable infrastructure solutions
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|a Journal Article
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|a Asphalt pavement
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|a Carbon emissions
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|a Life cycle assessment (LCA)
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|a MSWI-BA
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|a Carbon
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|a 7440-44-0
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|a asphalt
|2 NLM
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|a 8052-42-4
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|a Air Pollutants
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|a Solid Waste
|2 NLM
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|a Coal Ash
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|a Hydrocarbons
|2 NLM
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|a Liu, Chenyi
|e verfasserin
|4 aut
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|a Zhao, Yao
|e verfasserin
|4 aut
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|a Li, Qiang
|e verfasserin
|4 aut
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|a Wang, Jiaqing
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 207(2025) vom: 09. Sept., Seite 115122
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnas
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|g volume:207
|g year:2025
|g day:09
|g month:09
|g pages:115122
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|u http://dx.doi.org/10.1016/j.wasman.2025.115122
|3 Volltext
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