Contribution to the improvement of the general guidelines for the development, construction / reconstruction, rehabilitation and maintenance of the Trans-African Highway network - (Annex II) (only in French) - Technical Report

This report is a review, for the purpose of improvement, of Annex II entitled "General Guidelines for the Planning, Construction/Reconstruction, Rehabilitation and Maintenance of the Transfrician Highway Network" of the African Union Intergovernmental Agreement for the Harmonization of Norms and Standards on the Trans-African Highway Network. To this end, the following specific objectives have been set: Examine the conformity of the standards contained in the document in comparison with the [...]

Review of the Practical Guide to Pavement Design for Tropical Countries (in French only) - Technical Report

The Practical Guide to Pavement Design for Tropical Countries, published in 1984 by CEBTP, is still a document to which reference is often made in French-speaking African countries. Over the past thirty-five years, major developments have taken place in the pavement sector, particularly in the formulation of pavement materials and the design of pavement layers, while African countries are experiencing strong growth in heavy goods vehicle traffic, requiring the widespread use of pavements on the [...]

Innovative approaches towards the use of locally available natural marginal materials

The utilization of materials locally available on the site of a road project is a major concern in the context of sustainable development and perfectly meets the socioeconomic and environmental criteria involved in it. The report is based on the answers received from twenty-two countries. Five different families of locally available marginal natural materials have been identified. Information on placing and processing is given for each country. A comparison is also made of classifications and [...]

Vulnerability of Geotechnical Infrastructure to Climate Change and Adjustment Measures According to the Geographical Context

The report identifies foreseeable damage and the measures to be taken in a geographical context where climatology and geomorphology are aggregated. Five climate trends are covered: increase of average temperatures; decrease of average precipitation; increase of winter precipitation; increased intensity of extreme precipitation; and increased storm severity. These five trends result in thirteen induced general phenomena, to which nine types of road damage are linked. The geomorphology approach [...]

Anticipating the impact of climate change on road earthworks

Climate change and its consequences are one of the main preoccupations of the beginning of the 21 st century. The first part of the report presents, as an example, regional scenarios of the climate evolution for Quebec and Switzerland. The second part focuses on water: lack or excess of water and its state. It deals with the cases of embankments, natural slopes, rise of sea level, modifications of the permafrost, and the increase of the wind force. Various examples are presented in the third part. [...]