Chapter
May 7, 2012
Column Testing to Determine Colloidal Silica Transport Mechanisms
Authors: Patricia M. Gallagher and Yuanzhi LinAuthor Affiliations
Publication: Innovations in Grouting and Soil Improvement
Abstract
Mitigation of liquefaction potential in granular soil can theoretically be achieved through permeation of colloidal silica. However, practical application of this technique requires an efficient and adequate delivery of the silica. The purpose of this research is to evaluate colloidal silica transport mechanisms. The work consisted of short (0.9 m) column tests to identify the variables that influence stabilizer transport through soil formations. It was found that the primary variable influencing transport is the viscosity of the stabilizer solution. The results show that colloidal silica stabilizer can be delivered to the soil column in an adequate concentration to stabilize the soil. Unconfined compression tests on the treated specimens indicate that treatment with 5 weight percent colloidal silica provides adequate strength for mitigation of liquefaction risk.
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© 2005 American Society of Civil Engineers.
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Published online: May 7, 2012
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ASCE Technical Topics:
- [Inorganic compounds]
- Business management
- Chemical processes
- Chemicals
- Chemistry
- Clays
- Colloids
- Compression tests
- Engineering fundamentals
- Environmental engineering
- Geomechanics
- Geotechnical engineering
- Granular soils
- Laboratory tests
- Mitigation and remediation
- Organic compounds
- Practice and Profession
- Silica
- Soil dynamics
- Soil liquefaction
- Soil mechanics
- Soil properties
- Soil stabilization
- Soil tests
- Soils (by type)
- Tests (by type)
Authors
Affiliations
Patricia M. Gallagher
Assistant Professor, Department of Civil, Architectural and Environmental Engineering, Drexel University, 3141 Chestnut St, Philadelphia, PA, 19104
Yuanzhi Lin
Graduate Research Assistant, Department of Civil, Architectural and Environmental Engineering, Drexel University, 3141 Chestnut St, Philadelphia, PA, 19104
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