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Process Stabilization- Solidification and the Physicochemical Factors Influencing the Strength Development of Treated Dredged Sediments
Ecoloop Stockholm.
Swedish Geotechnical Institute, Linkoping.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
2016 (English)In: Geo-Chicago 2016: sustainable waste management and remediation : selected papers from sessions of Geo-Chicago 2016, August 14-18, 2016, Chicago, Illinois / [ed] Nazli Yesiller; Dimitrios Zekkos; Arvin Farid; Anirban De; Krishna R Reddy, Reston, Va: American Society of Civil Engineers (ASCE), 2016, 532-545 p.Conference paper (Refereed)
Abstract [en]

Process stabilization-solidification (PSS) is a convenient technology for amending high water content dredged sediments (DS) with binders. The PSS equipment comprises of a chassis that carries a pugmill and silos of up to four binders. Primary binders such as cement can be supplemented with pozzolanas materials. In this study, physicochemical interactions of single and composite (ternary) binders on strength development of treated DS are examined based on laboratory and a large-scale field tests. The findings of this study show that the unconfined compressive strength (UCS) depends on the amount of cement in the blend. The UCS decreased with increasing water/cement ratio. It is concluded that (i) the use of constant amounts of composite binder at increasing initial water content of the DS contributes to increased water/cement ratio; (ii) underwater discharge of stabilized DS prior to the initial setting increases the water/cement ratio of stabilized mass; and (iii) presence of mineral admixture hinders strength development of treated dredged sediments

Place, publisher, year, edition, pages
Reston, Va: American Society of Civil Engineers (ASCE), 2016. 532-545 p.
Series
Geotechnical Special Publication, ISSN 0895-0563 ; 273
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-61279ISI: 000389439100053ISBN: 978-0-7844-8016-8OAI: oai:DiVA.org:ltu-61279DiVA: diva2:1060656
Conference
Geo-Chicago Conference - Sutainability, Energy, and the Environment (Geo-Chicago), Chicago, Aug 14-18, 2016
Available from: 2016-12-29 Created: 2016-12-29 Last updated: 2016-12-29Bibliographically approved

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