Utilisation des Bétons Compactés au Rouleau (BCR)

The construction of flexible pavements is very expensive for countries like Senegal. Moreover these counries aren't producing petroleum which is a raw material for asphalt used in coating. So, it is necessary to find a method of construction that combine fiability, durability and economy. One of these methods is Roller Compacted Concrete or RCC. The modeling of the RCC structure was done with Ecoroute program that allows for a check of allowable stress and strain on all pavement layers. The application of RCC in the stretch Diamniadio-Mbour has shown interesting results. The crushing test made in laboratory yield on the average, 33 MPa as compressive strength and 4 MPa as tensile strength, at 28 days. On the other hand, for a pavement with a thickness of 30 cm, using RCC, 47 percent of economy was achieved relatively to flexible pavement.