Semi-Flexible Pavement: A Review of Design and Performance Evaluation

It is known to researchers in the field of road construction and development. Three types pavement are rigid, flexible, composite paving. The consists a layer flexible on top which rigid placed or vice versa. All these have advantages addition disadvantages that affect performance one hand user convenience other. About 50 years ago, work began establishing type characterized by its semi-flexible performance, combines pavement's rigidity flexibility. called grouted macadam some sources. mainly an open-graded asphalt mixture percentage air voids ranges from (25 35%), sources, it mentioned between (20 28%) with high-performance cementitious material. Work this sixties last century. However, there no approved specification for design, as design methods differ according researcher's vision. This scientific paper aims facilitate way new knowing basic stages presenting existing what required laboratory tests evaluate completed design. was found paving depends bonding components, considered For reason, direction future may be study cement, particular, they two materials their composition.