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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2020.02.017
|2 doi
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|a pubmed24n1023.xml
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|a (DE-627)NLM307177467
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|a (NLM)32126370
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|a (PII)S0956-053X(20)30075-1
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Liang, Shihua
|e verfasserin
|4 aut
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|a Utilization of pretreated municipal solid waste incineration fly ash for cement-stabilized soil
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 24.03.2020
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|a Date Revised 24.03.2020
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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 this study, the feasibility of using municipal solid waste incineration fly ash (MSWIFA) as additive for the strengthening of pretreated cement-stabilized soil was evaluated. Results indicated that the leaching concentrations of chromium and lead in MSWIFA after the water washing process and addition of 4% ferrous sulphate were reduced by 67% and 89%, respectively, which was lower than the limit value of Identification standard for hazardous waste (GB 5085.3-2007). After pretreatment, MSWIFA samples with ratios of 5% and 10% were blended into cement-stabilized soil with ordinary Portland cement (OPC) content of 10%, 15% and 20%. The unconfined compressive strength (UCS), internal friction angle and cohesion of the cement-stabilized soil increased with OPC and pretreated MSWIFA (PFA) content. The same effect was observed on UCS after the addition of 10% PFA as replacement of 5% OPC. In the subsequent X-ray powder diffraction test, scanning electron microscopy and leaching tests, the leaching concentrations of heavy metals in cement-stabilized soil became far lower than the limit value under the synergistic effects of the physical encapsulation of hydration products and stabilization of chemical agents. The incorporation of PFA as a supplementary material can effectively accelerate the formation of hydration products and can thus provide cleaner options for foundation reinforcement
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|a Journal Article
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|a Cement-stabilized soil
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|a MSWIFA
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|a Pretreatment
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|a Synergistic effect
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|a Unconfined compressive strength
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|a Coal Ash
|2 NLM
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|a Metals, Heavy
|2 NLM
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|a Particulate Matter
|2 NLM
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|a Soil
|2 NLM
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|a Solid Waste
|2 NLM
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|a Carbon
|2 NLM
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|a 7440-44-0
|2 NLM
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|a Chen, Juntao
|e verfasserin
|4 aut
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|a Guo, Mingxin
|e verfasserin
|4 aut
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|a Feng, Deluan
|e verfasserin
|4 aut
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|a Liu, Liang
|e verfasserin
|4 aut
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|a Qi, Tian
|e verfasserin
|4 aut
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 105(2020) vom: 15. März, Seite 425-432
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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|g volume:105
|g year:2020
|g day:15
|g month:03
|g pages:425-432
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|u http://dx.doi.org/10.1016/j.wasman.2020.02.017
|3 Volltext
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|d 105
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|b 15
|c 03
|h 425-432
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