Roller compacted pavements are considered as an adjunct of solid pavements. High strength at early age, faster construction and relatively low cost, are benefits of such pavements to be mentioned. One obstacle of these types of pavements is that using steel bars as reinforcement is not possible. This disadvantage results in low ductility and strength. So far, researchers have presented numerous solutions to address these issues, such as implementing fibers and fiber glass textile. In this research, Macro synthetic fiber and hooked end steel fiber are used in order to tackle the ductility and strength problem. Hence, effects of these two types of fibers on mechanical properties (such as compressive strength, Brazilian tensile test, one way and two way flexural strength) of roller compacted pavements are studied. All samples were prepared and tested based upon soil approach. By considering test results, it can be concluded that, steel fibers improve mechanical characteristic of roller compacted concrete pavements (RCCP) more than macro synthetic fibers. Increasing the amount of steel fibers improves the mechanical properties of RCCP and the specimens reinforced with 60 kg/m 3 steel fiber have maximum mechanical properties parameters; however, by increasing amount of macro synthetic fiber mechanical properties parameters trends does not continue. The specimens reinforced with 9 kg/m 3 macro synthetic fiber has maximum mechanical properties parameters between the specimens reinforced with macro synthetic fiber. Also mechanical characteristic of roller compacted concrete pavements (RCCP) depends on fiber and aggregate engagement and cohesion between concrete mortar and fiber. Keywords: Roller compacted pavements, Macro synthetic fiber, Hooked end steel fiber, Fiber glass textile, One way and two way flexural strength, compressive strength, Brazilian tensile test.
