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Methodology for sample preparation for quality control of stabilized dredged sediment

Gholampoor, Mohammadhossein LU ; Lindh, Per LU ; Johansson, Peter LU ; Dahlin, Torleif LU orcid and Wadsö, Lars LU (2024) 19th Nordic Geotechnical Meeting
Abstract
Periodic dredging of harbors and other waterways is carried out to ensure suffi-
cient depth for navigation. The Stabilization/Solidification method (S/S) is the
global approach for improving the geotechnical characteristics and stabilizing
pollutions in the low-compressive-strength dredged sediment (DS) for land rec-
lamation. For this, different binders, such as cement, fly ash, and slag, are mixed
with DS. The quality of mixing influences treated DS directly; therefore, this study
investigated the effect of mixing time on the physical properties of treated DS,
such as the unconfined compressive strength (UCS). Moreover, the potential for
using electrical resistivity (ER) measurements and isothermal... (More)
Periodic dredging of harbors and other waterways is carried out to ensure suffi-
cient depth for navigation. The Stabilization/Solidification method (S/S) is the
global approach for improving the geotechnical characteristics and stabilizing
pollutions in the low-compressive-strength dredged sediment (DS) for land rec-
lamation. For this, different binders, such as cement, fly ash, and slag, are mixed
with DS. The quality of mixing influences treated DS directly; therefore, this study
investigated the effect of mixing time on the physical properties of treated DS,
such as the unconfined compressive strength (UCS). Moreover, the potential for
using electrical resistivity (ER) measurements and isothermal calorimetry (IC)
tests to evaluate the mixing quality at the early stage were examined. Dredged
sediments from the harbor of Stavanger, and Oslo in Norway, were mixed with
binders using different water-binder ratios (w/b), and free-free-resonant (FFR)
and UCS tests were performed to evaluate mixing time effects on the treated sed-
iments. The results indicate that the higher the water content is, the higher the
mixing time to reach the maximum compressive strength needs to be. The poten-
tial of ER and IC for quality control of treated DS at early stages was tested on one
DS. It was found that these techniques have the potential to evaluate early-stage
DS quality. The correlation between ER, CL, and UCS tests will be investigated in
the future. (Less)
Please use this url to cite or link to this publication:
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Contribution to conference
publication status
published
subject
pages
8 pages
conference name
19th Nordic Geotechnical Meeting
conference location
Gothenburg, Sweden
conference dates
2024-09-18 - 2024-09-20
language
English
LU publication?
yes
id
c6b31651-1ee4-45ee-a22d-7cb0d73bc0da
alternative location
https://ngm2024.se/Papers/ngm2024-mohammadhossein%20gholampoor%28ver.2%29.pdf
date added to LUP
2025-01-29 09:52:36
date last changed
2025-04-04 15:44:09
@misc{c6b31651-1ee4-45ee-a22d-7cb0d73bc0da,
  abstract     = {{Periodic dredging of harbors and other waterways is carried out to ensure suffi-<br/>cient depth for navigation. The Stabilization/Solidification method (S/S) is the<br/>global approach for improving the geotechnical characteristics and stabilizing<br/>pollutions in the low-compressive-strength dredged sediment (DS) for land rec-<br/>lamation. For this, different binders, such as cement, fly ash, and slag, are mixed<br/>with DS. The quality of mixing influences treated DS directly; therefore, this study<br/>investigated the effect of mixing time on the physical properties of treated DS,<br/>such as the unconfined compressive strength (UCS). Moreover, the potential for<br/>using electrical resistivity (ER) measurements and isothermal calorimetry (IC)<br/>tests to evaluate the mixing quality at the early stage were examined. Dredged<br/>sediments from the harbor of Stavanger, and Oslo in Norway, were mixed with<br/>binders using different water-binder ratios (w/b), and free-free-resonant (FFR)<br/>and UCS tests were performed to evaluate mixing time effects on the treated sed-<br/>iments. The results indicate that the higher the water content is, the higher the<br/>mixing time to reach the maximum compressive strength needs to be. The poten-<br/>tial of ER and IC for quality control of treated DS at early stages was tested on one<br/>DS. It was found that these techniques have the potential to evaluate early-stage<br/>DS quality. The correlation between ER, CL, and UCS tests will be investigated in<br/>the future.}},
  author       = {{Gholampoor, Mohammadhossein and Lindh, Per and Johansson, Peter and Dahlin, Torleif and Wadsö, Lars}},
  language     = {{eng}},
  month        = {{06}},
  title        = {{Methodology for sample preparation for quality control of stabilized dredged sediment}},
  url          = {{https://ngm2024.se/Papers/ngm2024-mohammadhossein%20gholampoor%28ver.2%29.pdf}},
  year         = {{2024}},
}