Valorized deinking paper residue as fill material for geotechnical structures

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 s...

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Autores principales:	Karmen Fifer Bizjak, Barbara Likar, Ana Mladenovič, Vesna Zalar Serjun
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0c3a6a001df044068ba1a829a53bb9aa
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spelling	oai:doaj.org-article:0c3a6a001df044068ba1a829a53bb9aa2021-11-21T12:22:58ZValorized deinking paper residue as fill material for geotechnical structures10.1038/s41598-021-01949-12045-2322https://doaj.org/article/0c3a6a001df044068ba1a829a53bb9aa2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01949-1https://doaj.org/toc/2045-2322Abstract 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.Karmen Fifer BizjakBarbara LikarAna MladenovičVesna Zalar SerjunNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Karmen Fifer Bizjak Barbara Likar Ana Mladenovič Vesna Zalar Serjun Valorized deinking paper residue as fill material for geotechnical structures
description	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.
format	article
author	Karmen Fifer Bizjak Barbara Likar Ana Mladenovič Vesna Zalar Serjun
author_facet	Karmen Fifer Bizjak Barbara Likar Ana Mladenovič Vesna Zalar Serjun
author_sort	Karmen Fifer Bizjak
title	Valorized deinking paper residue as fill material for geotechnical structures
title_short	Valorized deinking paper residue as fill material for geotechnical structures
title_full	Valorized deinking paper residue as fill material for geotechnical structures
title_fullStr	Valorized deinking paper residue as fill material for geotechnical structures
title_full_unstemmed	Valorized deinking paper residue as fill material for geotechnical structures
title_sort	valorized deinking paper residue as fill material for geotechnical structures
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0c3a6a001df044068ba1a829a53bb9aa
work_keys_str_mv	AT karmenfiferbizjak valorizeddeinkingpaperresidueasfillmaterialforgeotechnicalstructures AT barbaralikar valorizeddeinkingpaperresidueasfillmaterialforgeotechnicalstructures AT anamladenovic valorizeddeinkingpaperresidueasfillmaterialforgeotechnicalstructures AT vesnazalarserjun valorizeddeinkingpaperresidueasfillmaterialforgeotechnicalstructures
_version_	1718419046531072000

Valorized deinking paper residue as fill material for geotechnical structures

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