| Popis: |
The use of sand dunes of the Sahara in road construction is a very important economic interest because of its high availability and ease of extraction. However, these materials have, naturally, a very strong instability mainly due to the rounded shape of the grain and the absence of the fine fraction, which makes almost no cohesion. Apart from the classical formulas treatment with hydraulic binders, materials can be the value by a correction of the particle size of sand with the addition of materials consistent. Thus the possibility of using sand dunes mixed with natural clay, sand, limestone and tuff is proposed in this paper. The results show that the treatment of sand dunes by adding 30% of materials revealed three consistent resistance formulas, the best being the clay-based. |
