After reviewing the research results and application of the flat dilatometer test (DMT) in the evaluation of soft soil parameters at home and aboard
authors introduced the application of DMT and other testing techniques to analyze the soil engineering properties of soft foundations for expressways synthetically. The calculated undrained shear strength based on DMT results is in accordance with that of field vane shear test (VST) basically; and the undrained shear strength from DMT also reflects the law of soil strength increasing with depth. Besides
the influential factors causing the difference between DMT and laboratory test results were analyzed. The results would provide reference for the application of DMT to domestic geotechnical engineering field.