Our Services

GeoStructures offers a wide range of professional services in the geotechnical engineering and construction monitoring fields. All of our work is backed by an unwavering commitment to excellence, innovation, and practicality.

Concrete Laboratory Testing
Construction Monitoring
Dams Analysis & Rehabilitation
Environmental Assessments
Foundation Investigation & Design
Geotechnical Laboratory Testing
Highway and Bridge Geotechniques
Lime and Cement Stabilization
Mine Subsidence Analysis & Remediation
Pavement Design & Rehabilitation
Percolation/Permeability In-Situ Testing
Pond and Lagoon Liners Design
Research and Special Studies
Sinkhole Evaluation & Remediation
Slope/Retaining Wall Evaluation & Design
Soil Improvement Technologies
Soil-Structure Interaction
Subsurface Investigations

Lime and Cement Stabilization of Pavement Subbase and Subgrade


The oldest known use of lime as an agent of chemical subgrade stabilization was by the ancient Romans when building the Appian Way in 312 B.C. On modern highway projects, lime has been traditionally utilized as a construction expedience to safeguard clayey subgrade against potential softening due to rain. Such an approach, however, does not account for any of the strengthening effects in design. Our engineers were the first in Pennsylvania to overcome this shortcoming and incorporate the benefits of lime and cement stabilization into the pavement design of a major section of the Pennsylvania Turnpike.



Lime improves the strength of clay by hydration, flocculation and cementation. The first and second mechanisms occur almost immediately upon introducing the lime, while the third is a prolonged effect. Our in-house expertise in lime and cement stabilization covers all aspects of the work from determining the mixture design proportion and assessing the strength gain with time to field implementation and testing. Highlights of key components follow:





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