Preliminary study for implementation of long lasting flexible road pavements in Romania

摘要

The actual flexible pavements designed according the existing norms are leading usually to overdesigned structures because of the lower values for the elastic modulus of the asphalt materials, specified in the existing norms. After a short introduction, presenting the general principles of flexible pavements design, the concepts of long lasting flexible pavements is considered in detail. Then a new research program, involving Accelerating Loading Test-ALT undertaken in parallel with the experiments development on the existing road network, is proposed to the attention of the road policy decisions factors in this country. This research project, supported by specific design assumptions and calculations is taking into considerations the specific soil, climatic and traffic conditions of the road network in Romania. Finally a discussion of the results obtained with this new study is made.