International Symposium on Subdrainage in Roadway Pavements and Subgrades

Out of print As is common knowledge in the transportation community, proper functioning of roadways is largely dependent on adequate drainage, both at the surface and in the subsurface. The accumulation of excessive water under pavements typically results in a reduced bearing capacity, leading to distress and premature failure of pavements. Drainage-related problems usually manifest themselves as pavement rutting, cracking, and increased road roughness. The World Road Association (PIARC) [...]

Practical Guidelines for the Design and Construction of Road Embankments

The practical guidelines contained in this report have been developed from the results of a survey on the state of the art in the design and construction of road embankments. In March 1993 a questionnaire was circulated to collect information about the "rules of the art in the design and construction of road embankments" in use in each of the 24 countries represented on PIARC Committee C12 by a member or a correspondent.

Landslides - Techniques of Evaluating Hazard

This report discusses current techniques used to evaluate landslide hazard in three stages. Firstly, the landslide hazard of an area is evaluated by collecting existing data, field reconnaissance, etc. At several specified sites along a route, more detailed investigations are then conducted, such as geophysical exploration, borings and stability analyses. The results are used to evaluate the landslide hazard at the sites more precisely and to design works to prevent possible landslides. [...]

Equipment and Methods Specific to Soil Treatment Works

To avoid the report on "Field treatment of soils with lime or hydraulic or pozzolanic binders" presented at the XIXth World Road Congress at Marrakech in 1991 (PIARC ref. 19.12.B), being too long, the Technical Committee on Earthworks, Drainage, Subgrade (C12) decided to limit the discussion of equipment and methods for stabilization to a simple listing. However, aware of the decisive practical impact of these points upon the quality of soil treatment works, C12 has decided to complete the report [...]

Leightweight Filling Materials

This document presents various lightweight filling materials for different applications in road construction. Details are given regarding material properties, design considerations, specifications related to the construction, pavement structure, environmental considerations if any, availability and economy. Practical use in particular projects are exemplified by various case histories from different countries. References are also given to documents where further details may be obtained. Since [...]