Analytical and experimental investigations of operating mechanisms in reinforced asphalt pavements
Reinforcement of asphalt pavements has become a feasible alternative within the past decade, largely because of grids. Whether reinforcement is an effective alternative for any given situation, however, must be established on a performance and economic basis. Potential performance benefits include reductions in rutting, cracking, and layer thickness, plus extended pavement etc. The effectiveness of reinforced pavements depends on the interaction between reinforcement and the asphalt mix. Such interaction is provided by a number of mechanisms including interlock, bond, confinement, and membrane effects. The extent to which a mechanism dominates the operation of a given reinforcement depends on the geometry, strength, and the elastic properties of the grid involved. The effects of various geometric properties of reinforcements on the effectiveness of grids through the mechanisms under which they operate are discussed. The test results showed that the interlock operating mechanism is governed mainly by the grid opening size and the thickness of strand. The bond operating mechanism is governed mainly by the grid surface area.
Hozayen, Hozayen (Hozayen), Gervais, M. (M.), Halim, A.O, & Haas, R. (R.). (1993). Analytical and experimental investigations of operating mechanisms in reinforced asphalt pavements.