Développement d'un catalogue de conception des chaussées pour les pays Sub-Sahariens

Abstract

Pavement surface evaluation in Sub-Saharan Africa (SSA) reveals severe, premature, and costly damages that require extensive maintenance. This is due to the limitations of tools used for pavement structural design as well as and the lack of the available calibration for the materials used. It is necessary to search for solutions for these failures and: • feed the discussion on durable roads for SSA area to meet the expectations of the trans-African highway projects of the new partnership for Africa (NEPAD); • provide simple and effective tools for pavement design and promote low cost formaintenance of road infrastructures; • provide users with functional and safety and durable road system. This catalogue, object and result of this work, was developed through a new tool for structural design (OCS-Chaussée), computed using Microsoft Excel worksheet. It uses iteration through empirical mechanics (ME) methods, applied to multilayer linear analysis using Odemark - Boussinesq method as a theoretical and conceptual basis for design pavement. The verification of obtained results was done with viscoelasticity assumption according Quijano’s data (2010) and the pavement analysis software WINJULEA developed by US Army Corps of Engineers (USACE) and with the backcalculation’s data from Varik and al. (2002) and local’s data from South-African. The lifetime of each proposed roadway was estimated by using Asphalt Institute’s transfer function and the Miner’s law. It’s hope that thoughtful use of this catalogue and the OCS-Chaussée will help advance reasonable road engineering solutions approaches, and training and make profitable budgets allocated to the construction and to road rehabilitation in Sub-Saharan Africa.

Date	14 Jun 2013
Original language	French
Awarding Institution	École de technologie supérieure
Supervisor	Gabriel J. Assaf (Supervisor)