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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2020.08.016
|2 doi
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|a pubmed24n1048.xml
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|a eng
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|a Tian, Yixi
|e verfasserin
|4 aut
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|a Performance of structural concrete using Waste-to-Energy (WTE) combined ash
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|c 2020
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 20.10.2020
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|a Date Revised 20.10.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2020 Elsevier Ltd. All rights reserved.
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|a In the U.S., about 27 million metric tons of municipal solid waste are used as fuel in Waste-to-Energy (WTE) power plants, generating about seven million tons of mixed bottom ash and fly ash (combined ash) annually, which are disposed of in landfills after metal separation. This study assessed the effect of using combined ash as a substitute of mined stone aggregates on the mechanical properties and leachability of cement mortar and concrete. The as-received combined ash was separated into three fractions: fine (<2 mm), medium (2-9.5 mm), and coarse (9.5-25 mm). The substitution of up to 100% of stone aggregate by the coarse and medium fractions of combined ash produced concrete with compressive strength exceeding 28 MPa after 28 days of curing. Similar results were obtained when the fine combined ash was used as a sand substitute, at 10 wt%, in mortar. The concrete specimens were subjected to several days of curing and mechanical testing. The results were comparable to the properties of commercial concrete products. The mechanical test results were supplemented by XRD and SEM analysis, and leachability tests by EPA Method 1313 showed that the optimal concrete products effectively immobilized the heavy metals in the combined ash
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|a Journal Article
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|a Combined ash
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|a Concrete
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|a Leachability
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|a Mechanical properties
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|a WTE
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|a Waste-to-energy
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|a Coal Ash
|2 NLM
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|a Solid Waste
|2 NLM
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|a Bourtsalas, A C Thanos
|e verfasserin
|4 aut
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|a Kawashima, Shiho
|e verfasserin
|4 aut
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|a Ma, Siwei
|e verfasserin
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|a Themelis, Nickolas J
|e verfasserin
|4 aut
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 118(2020) vom: 30. Dez., Seite 180-189
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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|g volume:118
|g year:2020
|g day:30
|g month:12
|g pages:180-189
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|u http://dx.doi.org/10.1016/j.wasman.2020.08.016
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