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Testing of a low-mo...
Testing of a low-mobility grout material for permeation grouting in embankment dams
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- Lagerlund, Johan (author)
- Luleå tekniska universitet,Geoteknologi,Department of Civil, Environmental and Natural Sources Engineering, Division of Mining and Geotechnical Engineering, Luleå University of Technology, Luleå, Sweden;Vattenfall Research & Development, Civil Engineering, Älvkarleby, Sweden
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- Laue, Jan (author)
- Luleå tekniska universitet,Geoteknologi,Department of Civil, Environmental and Natural Sources Engineering, Division of Mining and Geotechnical Engineering, Luleå University of Technology, Luleå, Sweden
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- Viklander, Peter (author)
- Luleå tekniska universitet,Geoteknologi,Vattenfall Vattenkraft AB, Luleå, Sweden;Department of Civil, Environmental and Natural Sources Engineering, Division of Mining and Geotechnical Engineering, Luleå University of Technology, Luleå, Sweden
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- Nordström, Erik (author)
- KTH,Betongbyggnad,Vattenfall Research & Development, Civil Engineering, Älvkarleby, Sweden; Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, Stockholm, Sweden
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(creator_code:org_t)
- Emerald Group Publishing Limited, 2023
- 2023
- English.
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In: Geotechnical Research. - : Emerald Group Publishing Limited. - 2052-6156. ; 10:4, s. 154-164
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Abstract
Subject headings
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- Embankment dams may be damaged by internal erosion, which ultimately may lead to a failure. During internal erosion, finer soil particles from the core soil are being washed out. To restore the core function, injection grouting may be undertaken. Grouting the core of an embankment dam should be performed with a grout with similar characteristics as the original core soil. This grout type is commonly used in compaction grouting, e.g., a low mobility grout. The grout is similar to a fine-grained moraine core soil, but given its stiffness, it is difficult to permeate a damaged core soil. A modified low mobility grout containing sand, limestone filler, bentonite, plasticizer, air release agent and water has been tested in the laboratory with focus on permeation. Grouting was done in different sized aggregates. Impact of paste-to-aggregate ratio, grout consistency, maximum grain size of grout, coarseness of grouted material, and grouting methodology was tested. Higher paste-to aggregate ratios and lower viscosity/yield strength in/of the grout improved the permeation. Initially pressurized grouting compared to only hydrostatic pressures followed by stepwise pressure increased grouting was furthermore identified as a factor to improve the permeation.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Geoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Geotechnical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
Keyword
- embankment dams
- glacial till
- grouting
- mortar
- Geoteknik
- Soil Mechanics
Publication and Content Type
- ref (subject category)
- art (subject category)
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