Chapter
Mar 30, 2017
Polymeric Shell-Confined Aggregate Pier Ground Improvement Method to Support Bridge Embankments over Soft Clay Soil
Authors: Tony Sangiuliano [email protected], Jason Brown [email protected], Brian C. Metcalfe, M.ASCE [email protected], and Kord J. Wissmann, Ph.D., M.ASCE [email protected]Author Affiliations
Publication: Geotechnical Frontiers 2017
Abstract
Densified aggregate piers have been widely used for ground improvement since the mid 1990s. The piers are typically constructed by backfilling cylindrical cavities with densified stone using a vertical ramming apparatus. The strength and compressibility of densified aggregate piers systems are confining stress dependent and tend to have low capacities in highly compressible soil because of their tendency to bulge into weak soil. This paper describes the design and construction of a densified aggregate pier system with polymeric shells for confinement in soft soil for a highway embankment in Seeley’s Bay, Ontario, Canada. The method allows for the insertion of high density polyethylene (HDPE) sleeves into the ground through the soft materials using a specially adapted mandrel. This paper is of particular significance because it presents significant insight into an effective ground improvement method in weak and sensitive soil subject to shear strength degradation by traditional aggregate pier methods.
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© 2017 American Society of Civil Engineers.
History
Published online: Mar 30, 2017
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Authors
Affiliations
P.Eng.
Ministry of Transportation Ontario, 145 Sir William Hearst Ave., Room 223, Toronto, ON M3M 0B6. E-mail: [email protected]
P.Eng.
GeoSolv Design/Build Inc., 122 Creditstone Rd., Vaughan, L4K 1P2. E-mail: [email protected]
P.E.
Geopier Foundation Company, Inc., 130 Harbour Place Dr., Suite 280, Davidson, NC 28036. E-mail: [email protected]
P.E.
Geopier Foundation Company, Inc., 130 Harbour Place Dr., Suite 280, Davidson, NC 28036. E-mail: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.