THE OVERLAY OF FOREST ROAD PAVEMENT BY LOCAL INDUSTRIAL BY-PRODUCTS

The design of forest roads pavements was done empirically without superstructure and technical works and includes layers with natural materials - aggregates and 3A. This pavement does not allow the transport of goods under difficult climatic conditions. For this reason, it is necessary to strengthen the existing pavements with economical and environmental procedures. In our laboratory, we have made an effort with the stabilization of forest roads with by products. We used fly ash from Peloponnisos and Ptolemais, red mud from Parnassos boxite process and marble dust from marble residuals in the under research area. After the stabilization, we have used the "Benkelman beam". We found that their deflection is reduced from 12-25%, the equivalent axle loads increased to 200-400% and finally we can admit that the by products can replace successfully the aggregates. The stabilization of forest roads with industrial by-products (fly ash, red mud and marble dust) represents an environmentally friendly process, as using materials of nature, which are abundant and they provide the basis for improved road constructions, from the biological, technical and economical points of view. For the covering abstract see ITRD E118499.