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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1016/j.wasman.2021.10.028
|2 doi
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|a pubmed24n1109.xml
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|a eng
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|a Galderisi, A
|e verfasserin
|4 aut
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|a Petrography of construction and demolition waste (CDW) from Abruzzo region (Central Italy)
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 07.12.2021
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|a Date Revised 14.12.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2021 Elsevier Ltd. All rights reserved.
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|a The density, colour and texture, plus mineral and chemical features of 18 ceramic-like CDW samples from the Abruzzo region (Central Italy) were characterised. The concretes, natural stones, tiles, roof-tiles, bricks and perforated bricks are either aphanitic to porphyric. Concretes and natural stones are grey to white and tend to be > 2.0 g/cm3; the masonries are brown to reddish and close to < 2.0 g/cm3. Concrete and natural stone are rich or even exclusively made up of calcite, with high amounts of CaO (>40 wt%) and LOI (volatiles, CO2 + H2O). The masonries are instead calcite-, CaO- (<25 wt%) and LOI-poor (<8 wt%) but enriched in SiO2 (45 to 70 wt%) stabilised as quartz and/or cristobalite, with significant amount of Al2O3 (12 to 20 wt%). S and Cl contents are similar among concrete, bricks and perforated bricks. The petrography of CDW concretes is similar among geographical areas with abundance of limestones used as aggregates. However, in limestone-poor areas CDW are SiO2- and Al2O3-rich, reflecting the prevalent use of masonry and/or silicate-rich construction materials, implying that each geographical area is characterised by peculiar CDW composition. Therefore, the knowledge of mesoscopic, physical and petrographic aspects has to be known for planning adequate sorting methods, promoting upcycling reusing applications. Some of the studied CDW samples are susceptible to release relative high Cr and As content
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|a Journal Article
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|a Abruzzo region (Italy)
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|a CDW (construction and demolition waste)
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|a Recycling
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|a XRF
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|a XRPD
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|a Industrial Waste
|2 NLM
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|2 NLM
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|a 7631-86-9
|2 NLM
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| 700 |
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|a Iezzi, G
|e verfasserin
|4 aut
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|a Bianchini, G
|e verfasserin
|4 aut
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|a Paris, E
|e verfasserin
|4 aut
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|a de Brito, J
|e verfasserin
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|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 137(2022) vom: 01. Jan., Seite 61-71
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|x 1879-2456
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|g volume:137
|g year:2022
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|g pages:61-71
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|u http://dx.doi.org/10.1016/j.wasman.2021.10.028
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