| Title: | Valorized deinking paper residue as fill material for geotechnical structures |
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| Authors: | ID Fifer Bizjak, Karmen (Author)
ID Likar, Barbara (Author)
ID Mladenovič, Ana (Author)
ID Zalar Serjun, Vesna (Author) |
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| Files: |  URL - Source URL, visit https://www.nature.com/articles/s41598-021-01949-1#Sec14
 PDF - Presentation file, download (1,63 MB)
MD5: 4F151796391EBFF05C904307F4C5D984
PDF - Supplement, download (863,22 KB)
MD5: 30797CF589EB50CF6E59659E6D4433A9
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
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| Abstract: | This study introduces a novel geotechnical composite material comprising two types of fill material sourced from the paper industry-deinking paper sludge ash (DPSA) and deinking paper sludge (DPS). Five composites with different DPSA and DPS contents were investigated. Two composites were selected for further analyses. The technology and procedure for composite installation were implemented in field tests. The composites with 80% and 70% DPSA exhibited the elasticity required to withstand minor landslide slip deformations, in addition to achieving sufficiently high values of uniaxial compressive strength. The composites had a low maximum dry density value, which led to fewer settlements in the entire support structure. The enhanced shear characteristics can enable the construction of a thinner retaining wall. The delay between preparation and installation of the composites was further investigated. The field tests confirmed that the composites with 80% and 70% DPSA can be installed on the construction site 4 h and even 24 h after mixing. In 2018, a retaining wall structure with 70% DPSA and 30% DPS was successfully implemented near a railway line using conventional technology as followed-up research to the herein presented study. Results have been derived from work performed in the scope of the H2020 Paperchain project in which novel circular economy models centered on the valorization of the waste streams generated by the pulp and paper industry as secondary raw material for several resource-intensive sectors, including the construction sector, have been developed. Environmental benefits are savings in natural raw materials, reduction of landfill disposal as well as CO2 emission reduction. |
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| Keywords: | deinking paper sludge ash, deinking paper sludge, secondary resources, fill material, geotechnical structure, landslide, open access |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 16.11.2021 |
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| Publisher: | Nature Publishing Group |
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| Year of publishing: | 2021 |
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| Number of pages: | str. 1-13 |
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| Numbering: | Vol. 11 |
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| PID: | 20.500.12556/DiRROS-15856  |
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| UDC: | 620.1/.2 |
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| ISSN on article: | 2045-2322 |
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| DOI: | 10.1038/s41598-021-01949-1 |
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| COBISS.SI-ID: | 85169667 |
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| Copyright: | © The Author(s) 2021 |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 16. 11. 2021;
Št. članka 22363;
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| Publication date in DiRROS: | 04.07.2023 |
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| Views: | 259 |
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| Downloads: | 209 |
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