Evaluation of Engineering Properties of Problematic Soils in HighwayConstruction. Part 1

摘要

The study presents the research effort to evaluate problematic A-2-4 soils inhighway construction. Typical problems encountered by contractors in Florida during construction are that the soils retain excess moisture or are difficult to dry and compact. One prevalent theory was that the construction problems were directly related to the presence of expansive clays in the soils. An experimental program was conducted to evaluate six problem soils. The soils were chosen by the Florida Department of Transportation (FDOT) because of past problems experienced during construction. A set of laboratory tests was performed to determine the engineering properties of each soil. A review of the current understanding of expansive soils in highway design was also conducted.