APPLICATION OF THE «FOUNDATION CONCEPT» FOR THE ROAD PAVEMENT DESIGN AND CONSTRUCTION

Abstract

Introduction. The introduction to the paper highlights the advantages of the «foundation concept» based on the interpretation of a pavement as the construction comprising the two main consecutively designed and constructed elements: the pavement foundation and the pavement construction itself. The realization of that concept allows the design and construction of so-called long-life pavements according up to 400 msa using hydraulically bound mixtures [2], or HBM. Problem Statement. The issues of the paper concern the problems of implementation of the European standards related requirements into native systems for road pavements designing. Purpose. The goal of the paper is to analyze the main provisions of the «foundation concept» and its possibilities in the application of the European standards requirements concerning road materials for the improvement of current systems for road pavements design. Results. The classification of the road pavement foundations was reviewed which is based on the long-term confined foundation surface modulus (FSM) values and comprises four classes (FC): FC1 – FSM ≥ 50 МPа; FC2 – FSM ≥ 100 МPа; FC3 – FSM ≥ 200 МPа; FC4 – FSM ≥ 400 МPа. According such classification, the two methodologies for the pavement foundation design were briefly reviewed and compared: the restricted foundation design and the performance foundation design.

Keywords

• road