Identification and Classification of Expansive Soils Based on Attribute Recognition Theory

This paper is concerned with the development of a model using attribute recognition theory for judgment of expansive soils in road sub-grades. Aiming at the requires to the evaluation of expansive soils in practice, an evaluation index system is developed and attribute measurement functions are constructed to calculate attribute measurement of single index and synthetic attribute measurement that is used to recognize the expansibility of expansive soil. A typical example of the application of the model is presented, and the used process, the reliability, and rationality of the appraising model are explained in detail; and the assessment results are compared with that of fuzzy synthetic evaluation method. The application example validates that this model is feasible in synthetic evaluation of expansive soil. It is hoped that this will encourage the application of attribute measurement model by professionals.