Mercedes Benz Plant Expansion Soil Stabilization by Compaction Grouting Vance, Alabama Back to Project List Limited Mobility Grouting Compaction grouting is used to stabilize loose soil and rock fill area for an automobile manufacturing plant expansion project. Project Overview: Layne GeoConstruction stabilized a zone of loose soil and rock fill beneath a to-be-constructed building for an automobile manufacturing plant expansion project. Exploratory borings revealed the loose rock fill was not adequate to support a large manufacturing facility and needed to be improved by compaction grouting. Fifty-six thousand linear feet of grout holes were drilled and 3,000 yards of compaction grout were placed in just under three months time. Eighteen-hundred holes were drilled on an engineered grid pattern to treat the building footprint. Average depth of the grout holes was 35 to 40 feet. A low slump compaction grout made up of cement, fly ash, sand and water was placed and laser levels were used to monitor ground heave. The entire project was completed with two high production drilling and grouting units. Due to Layne’s high production rates, the owner saved considerable costs in inspection-related services.     Value of Work Performed: $2,200,000 Project Duration: 12 weeks Project Completion Date: September 2001 Project Reference: Construction Manager: Rust Constructors, Inc. Bill Matta (205) 462-5309