The TRD Method for In Situ Mixed Vertical Barriers in Dams and Levees

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• Jeffrey C. Evans, Ph.D., P.E. Professor and Chair Department of Civil and Environmental Engineering Bucknell University Lewisburg, PA 17837, USA
• Friday 12 October 2012, 13:30-15:00
• Engineering Department - Lecture Room 5.

If you have a question about this talk, please contact Anama Lowday.

Conventional slurry trench methods of constructing low-permeability vertical barriers have been widely used in the past but more recently in situ mixing using the Trench Remixing and Deep wall method (TRD) has been introduced to the US. The TRD method is a one-phase process that involves the simultaneous, full-depth cutting and mixing of in situ soils with additives to create, in place, a continuous soil mixed wall. A blend of cementitious materials (granulated ground blast furnace slag and Portland cement) and slurry are injected as the milling/cutting proceeds horizontally resulting in continuous vertical mixing of in situ soils with the injected materials. Details of the technique will be presented as well as an evaluation of the wall performance at the Herbert Hoover Dike at Lake Okeechobee, Florida. Performance issues addressed

This talk is part of the Engineering Department Geotechnical Research Seminars series.

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