Large Scale Experimentation Slope Stability of «Soil Tyre» in Mostaganem (Algeria)

Abstract

The importance of protecting and conserving the environment has led the research community to think seriously about the use of used tyres in the field of civil Engineering, as a mean to absorb the huge quantities spread all over the world.The research has found that used tyre could resolve some problems related to stability or bearing and also to protect certain structures.The problem of used tyre is a problem related to all countries; in fact millions of tonnes of waste are thrown away prompting a serious threat to the ozone layer.In this article, it will be discussed the construction of a backfill in a full scale. This backfill is set at the bottom of a big slope reaching 20m high, conducted during the construction of a highway in Sidi Lakhdar in the wilaya of Mostaganem West of Algiers. Layers of used tyres were spread on a orthorhombic pattern over a height of about 20m and a base length of 100m. The analysis and later the checks conducted were able to quantity the degree of success of this technique “Pneusol” for slope stability, as well as its effect on improving the soil against skidding, of course in addition to its environmental importance.This project which is the second one conducted in full scale in Algeria will have the benefit to improve slope stability for the adjacent road. In this project we absorbed about 6000 used tyres of trucks.