Journal article
Full-scale field testing of colloidal silica grouting for mitigation of liquefaction risk
Drexel University. Department of Civil, Architectural, and Environmental Engineering. Faculty Research and Publications.
10 Jul 2007
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This paper reports results of a full-scale field test to assess the performance of dilute colloidal silica stabilizer in reducing the settlement of liquefiable soil. Slow injection methods were used to treat a 2-m-thick layer of liquefiable sand. Eight injection wells were installed around the perimeter of the 9-m-diameter test area and 8% by weight colloidal silica grout was slowly injected into the upper 2 m of a 10-m-thick layer of liquefiable sand. A central extraction well was used during grout injection to direct the flow of the colloidal silica towards the center of the test area. Details of the field injection are described. Subsequently, the injection wells were used to install explosive charges and liquefaction was induced by blasting. After blasting, approximately 0.3 m of settlement occurred versus 0.5 m of settlement in a nearby untreated area. The mechanism of improvement is thought to be bonding between the colloidal silica and the individual sand particles; the colloidal silica gel encapsulates the soil structure and maintains it during dynamic loading.
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Details
- Title
- Full-scale field testing of colloidal silica grouting for mitigation of liquefaction risk
- Creators
- Patricia M. Gallagher (Author) - Drexel University (1970-)Carolyn T. Conlee (Author) - Drexel University (1970-)Kyle M. Rollins (Author) - Drexel University (1970-)
- Publication Details
- Drexel University. Department of Civil, Architectural, and Environmental Engineering. Faculty Research and Publications.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; College of Engineering; Drexel University (1970-)
- Web of Science ID
- WOS:000243546700006
- Scopus ID
- 2-s2.0-33846518741
- Other Identifier
- 991014632943804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Geological
- Geosciences, Multidisciplinary