NEHRP Clearinghouse

Ground Improvement Techniques for Liquefaction Remediation Near Existing Lifelines.
Andrus, R. D.; Chung, R. M.
October 1995, 94 p.
Identifying Number(s)
This report reviews five low vibration ground improvement techniques suitable for remedial work near existing structures. The five techniques are: compaction grouting, permeation grouting, jet grouting, in situ soil mixing, and drain pile. The factors which can influence the effectiveness of each technique are identified. Cost estimates are given for each technique, except the drain pile technique which is not yet available in the United States. Nineteen case studies of liquefaction remediation and remedial work near existing lifelines are reviewed. Advantages and constraints of the five techniques are compared. A combination of techniques may provide the most cost-effective ground improvement solution for preventing damage to existing lifelines resulting from liquefaction-induced horizontal ground displacement, subsidence, and uplift.
Dams; Earth movements; Ground subsidence; Bridges (Structures); Mixing; Earthquake resistance; Pipelines; Soil structure interactions; Grouting; Soil dynamics; Drainage; Storage tanks; Soil mechanics; Liquefaction; Ground motion; Buildings; Earthquake engineering; Lifeline systems; Seismic effects; Displacement; Conduits; Deformation; Cost estimates; Soil stabilization