This guide codifies the technique of soil treatment with hydraulicbinders, in some cases in combination with lime, for the constructionof pavement base layers. It supplements the “Guide techniqueTraitement des ...
This guide codifies the technique of soil treatment with hydraulicbinders, in some cases in combination with lime, for the constructionof pavement base layers. It supplements the “Guide techniqueTraitement des sols à la chaux et/ou aux liants hydrauliques -Terrassement et couche de forme” (GTS – Sétra/LCPC, 2000) and theapplicable standards. The first part of the document explains the types of soils involved andthe specifications for uniformity. It details the content of studies andhow they change in nature from geological surveys to laboratory tests. The second part describes the design of treated soil pavement baselayers. It states the traffic classes for which these materials may beused and explains, with regard to the design method, the parametersthat are specific to treated soils, in particular the mechanicalcharacteristics measured in a laboratory weighted on the basis of theconditions at the site and the state of the interface. It ends withexamples of design using fine treated soils. The third part explains how works and the monitoring of the materialsshould be performed, the ways the materials should be prepared at theconstruction site, defines the levels of quality on the basis of theequipment used (in-situ and in a plant), the conditions of transport andlaying, the surface protection to be applied on the basis of forecaststresses and the quality control procedures. This document ends with a series of annexes dealing with the soil datasheet and the specifications of soils used in pavement base layers,some economic factors and, finally, a summary of the survey that wascarried out on treated soil structures constructed in France.
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