Karmen Fifer Bizjak (Avtor), Barbara Likar (Avtor), Ana Mladenovič (Avtor), Vesna Zalar Serjun (Avtor)

Povzetek

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.

Ključne besede

pepel iz papirniškega mulja;papirniški mulj;sekundarni viri;zasipni material;geotehnična struktura;zdrs;odprti dostop;deinking paper sludge ash;deinking paper sludge;secondary resources;fill material;geotechnical structure;landslide;open access;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: ZAG - Zavod za gradbeništvo Slovenije
Založnik: Nature Publishing Group
UDK: 620.1/.2
COBISS: 85169667 Povezava se bo odprla v novem oknu
ISSN: 2045-2322
Št. ogledov: 4
Št. prenosov: 1
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: pepel iz papirniškega mulja;papirniški mulj;sekundarni viri;zasipni material;geotehnična struktura;zdrs;odprti dostop;
Komentar vira: Nasl. z nasl. zaslona; Opis vira z dne 16. 11. 2021; Št. članka 22363;
Strani: str. 1-13
Zvezek: ǂVol. ǂ11
Čas izdaje: 2021
DOI: 10.1038/s41598-021-01949-1
ID: 19469805