Soil Modulus After Ground Improvement |
Evaluation of ground improvement is accomplished using a variety of methods, from simple elevation surveys to document the amount of compression caused, to geotechnical in-situ and laboratory testing, to geophysical testing. The most common types of geotechnical testing used to evaluate the modulus of the soil after ground improvement are penetration tests such as the Standard Penetration Test (SPT) or the Static Cone Penetration Test (CPT). Engineers occasionally ignore two significant factors when evaluating these test results: (1) continued increase of CPT or SPT values over time, and (2) an increased correlation between modulus and penetration resistance for overconsolidated soils, as compared to normally consolidated soils. This article is designed to provide readers with a better understanding of how to interpret geotechnical test results in improved ground. The full document can be downloaded in PDF format below. |