Condition assessment of lower roadway layers for pavement management systems

Abstract

The process of selecting road maintenance technologies for the Pavement Management System (PMS) can use road pavement moduli of deformation as the substantiating information. Assessment criteria based on either pavement or base course moduli of deformation have strong empirical underpinning, since the stiff plate bearing testing (SPBT) is commonly used worldwide. This paper discusses potential practical applications of plate bearing test numerical simula- tion based on Falling Weight Deflectometer (FWD) deflection data, and theoretical model based on flexible pavement. It was proven that including a pavement model with stress dependency, the simulated second load-displacement curves meet reliably plate bearing in-situ test conditions for different layers of either subgrade or base courses of road pave- ment. This methodology is feasible by classifying technical condition of each lower layer of road pavement against requirements towards new pavements.

Keywords:

• subgrade
• crushed aggregate base course
• pavement management systems
• stiff plate bearing test simulation
• FWD static pavement deflections
• pavement subgrade and base course condition

Additional information

Notes on contributors

Andrzej Pożarycki

Andrzej POŻARYCKI. Assistant Professor at the Faculty of Civil and Environmental Engineering at Poznan University of Tech- nology. He has acted as the project manager of many test sections and laboratory experiments for understanding the physical phe- nomena in road pavements. Through the experience gained in the construction industry, he has successfully combined science with practice. His research interests involve the use of applied mathematics in the practice of civil engineers.