Strengthening existing roads in grasslands

The rangelands regions are, as a rule, approached by roads with low bearing capacity and problematic structural adequacy under difficult climatic conditions. This elements, do not always allow rapid and secure transport of forages and animal products, so that reduction of their value is observed. In this case economic improvement of resistibility and structural adequacy of road network is required. When however these roads they circulate also vehicles for other aims, as for recreation and for visits in sights and monuments of nature, is then required also study of strengthening existing pavement in order to it corresponds in the new circulatory pressure. In the present work is searched in roads of mountainous Rodopi, the possibility stabilisation of their surface with cement, lime, but also with various industrial by-products. Ιs showed that all the stabilizers solve considerably the problem, and moreover contribute in a friendly-environment construction , are enough become initially soil mechanic analysis, economic investigation with regard to the cost of transport of products and mainer it is investigated the ability of the water to go throw the soil so that is detered the entry of dangerous substances that exists in the by-products, in the horizons of water.